mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-01-19 13:32:33 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions
mariadb/mysql-test/r/func_str.result
Michael Widenius f610296d98 Changed MariaDB error numbers to start from 1900 to not conflict with MySQL error numbers 
extra/comp_err.c:
  Allow one to have multiple start-error-numbers in the same error.txt file.
  Generate 'empty' error strings for the missing error numbers in the errmsg.sys file
mysql-test/r/bigint.result:
  Update results to use new error numbers
mysql-test/r/dyncol.result:
  Update results to use new error numbers
mysql-test/r/func_math.result:
  Update results to use new error numbers
mysql-test/r/func_str.result:
  Update results to use new error numbers
mysql-test/r/plugin.result:
  Update results to use new error numbers
mysql-test/r/table_options.result:
  Update results to use new error numbers
mysql-test/r/type_newdecimal.result:
  Update results to use new error numbers
mysql-test/r/warnings.result:
  Update results to use new error numbers
mysql-test/suite/vcol/r/vcol_ins_upd_innodb.result:
  Update results to use new error numbers
mysql-test/suite/vcol/r/vcol_ins_upd_myisam.result:
  Update results to use new error numbers
mysql-test/suite/vcol/r/vcol_misc.result:
  Update results to use new error numbers
sql/derror.cc:
  Ensure we don't read a errmsg.sys with a missing required error message;  This change was needed as errmsg.sys may now contain empty error messages between the MySQL and MariaDB error messages.
  If error message file didn't exist and we have not read one in the past, don't continue.
  Give better error message if the errmsg.sys header has changed.
sql/share/errmsg.txt:
  Create new section, starting from 1900, for MariaDB error messages
2011-05-21 00:46:18 +03:00

2631 lines
102 KiB
Text
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

drop table if exists t1,t2;
set names latin1;
select 'hello',"'hello'",'""hello""','''h''e''l''l''o''',"hel""lo",'hel\'lo';
hello 'hello' ""hello"" 'h'e'l'l'o' hel"lo hel'lo
hello 'hello' ""hello"" 'h'e'l'l'o' hel"lo hel'lo
select 'hello' 'monty';
hello
hellomonty
select length('\n\t\r\b\0\_\%\\');
length('\n\t\r\b\0\_\%\\')
10
select bit_length('\n\t\r\b\0\_\%\\');
bit_length('\n\t\r\b\0\_\%\\')
80
select char_length('\n\t\r\b\0\_\%\\');
char_length('\n\t\r\b\0\_\%\\')
10
select length(_latin1'\n\t\n\b\0\\_\\%\\');
length(_latin1'\n\t\n\b\0\\_\\%\\')
10
select concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h');
concat('monty',' was here ','again') length('hello') char(ascii('h')) ord('h')
monty was here again 5 h 104
select hex(char(256));
hex(char(256))
0100
select locate('he','hello'),locate('he','hello',2),locate('lo','hello',2) ;
locate('he','hello') locate('he','hello',2) locate('lo','hello',2)
1 0 4
select instr('hello','HE'), instr('hello',binary 'HE'), instr(binary 'hello','HE');
instr('hello','HE') instr('hello',binary 'HE') instr(binary 'hello','HE')
1 0 0
select position(binary 'll' in 'hello'),position('a' in binary 'hello');
position(binary 'll' in 'hello') position('a' in binary 'hello')
3 0
select left('hello',null), right('hello',null);
left('hello',null) right('hello',null)
NULL NULL
select left('hello',2),right('hello',2),substring('hello',2,2),mid('hello',1,5) ;
left('hello',2) right('hello',2) substring('hello',2,2) mid('hello',1,5)
he lo el hello
select concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1)) ;
concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1))
happy
select substring_index('www.tcx.se','.',-2),substring_index('www.tcx.se','.',1);
substring_index('www.tcx.se','.',-2) substring_index('www.tcx.se','.',1)
tcx.se www
select substring_index('www.tcx.se','tcx',1),substring_index('www.tcx.se','tcx',-1);
substring_index('www.tcx.se','tcx',1) substring_index('www.tcx.se','tcx',-1)
www. .se
select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
substring_index('.tcx.se','.',-2) substring_index('.tcx.se','.tcx',-1)
tcx.se .se
select substring_index('aaaaaaaaa1','a',1);
substring_index('aaaaaaaaa1','a',1)
select substring_index('aaaaaaaaa1','aa',1);
substring_index('aaaaaaaaa1','aa',1)
select substring_index('aaaaaaaaa1','aa',2);
substring_index('aaaaaaaaa1','aa',2)
aa
select substring_index('aaaaaaaaa1','aa',3);
substring_index('aaaaaaaaa1','aa',3)
aaaa
select substring_index('aaaaaaaaa1','aa',4);
substring_index('aaaaaaaaa1','aa',4)
aaaaaa
select substring_index('aaaaaaaaa1','aa',5);
substring_index('aaaaaaaaa1','aa',5)
aaaaaaaaa1
select substring_index('aaaaaaaaa1','aaa',1);
substring_index('aaaaaaaaa1','aaa',1)
select substring_index('aaaaaaaaa1','aaa',2);
substring_index('aaaaaaaaa1','aaa',2)
aaa
select substring_index('aaaaaaaaa1','aaa',3);
substring_index('aaaaaaaaa1','aaa',3)
aaaaaa
select substring_index('aaaaaaaaa1','aaa',4);
substring_index('aaaaaaaaa1','aaa',4)
aaaaaaaaa1
select substring_index('aaaaaaaaa1','aaaa',1);
substring_index('aaaaaaaaa1','aaaa',1)
select substring_index('aaaaaaaaa1','aaaa',2);
substring_index('aaaaaaaaa1','aaaa',2)
aaaa
select substring_index('aaaaaaaaa1','1',1);
substring_index('aaaaaaaaa1','1',1)
aaaaaaaaa
select substring_index('aaaaaaaaa1','a',-1);
substring_index('aaaaaaaaa1','a',-1)
1
select substring_index('aaaaaaaaa1','aa',-1);
substring_index('aaaaaaaaa1','aa',-1)
1
select substring_index('aaaaaaaaa1','aa',-2);
substring_index('aaaaaaaaa1','aa',-2)
aa1
select substring_index('aaaaaaaaa1','aa',-3);
substring_index('aaaaaaaaa1','aa',-3)
aaaa1
select substring_index('aaaaaaaaa1','aa',-4);
substring_index('aaaaaaaaa1','aa',-4)
aaaaaa1
select substring_index('aaaaaaaaa1','aa',-5);
substring_index('aaaaaaaaa1','aa',-5)
aaaaaaaaa1
select substring_index('aaaaaaaaa1','aaa',-1);
substring_index('aaaaaaaaa1','aaa',-1)
1
select substring_index('aaaaaaaaa1','aaa',-2);
substring_index('aaaaaaaaa1','aaa',-2)
aaa1
select substring_index('aaaaaaaaa1','aaa',-3);
substring_index('aaaaaaaaa1','aaa',-3)
aaaaaa1
select substring_index('aaaaaaaaa1','aaa',-4);
substring_index('aaaaaaaaa1','aaa',-4)
select substring_index('the king of thethe hill','the',-2);
substring_index('the king of thethe hill','the',-2)
the hill
select substring_index('the king of the the hill','the',-2);
substring_index('the king of the the hill','the',-2)
the hill
select substring_index('the king of the the hill','the',-2);
substring_index('the king of the the hill','the',-2)
the hill
select substring_index('the king of the the hill',' the ',-1);
substring_index('the king of the the hill',' the ',-1)
hill
select substring_index('the king of the the hill',' the ',-2);
substring_index('the king of the the hill',' the ',-2)
the hill
select substring_index('the king of the the hill',' ',-1);
substring_index('the king of the the hill',' ',-1)
hill
select substring_index('the king of the the hill',' ',-2);
substring_index('the king of the the hill',' ',-2)
the hill
select substring_index('the king of the the hill',' ',-3);
substring_index('the king of the the hill',' ',-3)
the hill
select substring_index('the king of the the hill',' ',-4);
substring_index('the king of the the hill',' ',-4)
the the hill
select substring_index('the king of the the hill',' ',-5);
substring_index('the king of the the hill',' ',-5)
of the the hill
select substring_index('the king of the.the hill','the',-2);
substring_index('the king of the.the hill','the',-2)
.the hill
select substring_index('the king of thethethe.the hill','the',-3);
substring_index('the king of thethethe.the hill','the',-3)
the.the hill
select substring_index('the king of thethethe.the hill','the',-1);
substring_index('the king of thethethe.the hill','the',-1)
hill
select substring_index('the king of the the hill','the',1);
substring_index('the king of the the hill','the',1)
select substring_index('the king of the the hill','the',2);
substring_index('the king of the the hill','the',2)
the king of
select substring_index('the king of the the hill','the',3);
substring_index('the king of the the hill','the',3)
the king of the
select concat(':',ltrim(' left '),':',rtrim(' right '),':');
concat(':',ltrim(' left '),':',rtrim(' right '),':')
:left : right:
select concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':');
concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':')
:left : right:
select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
:left: right:
select concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':');
concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':')
:m:y:s:
select concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':');
concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':')
:my:sql:
select concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':');
concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':')
:my:sql:
select TRIM("foo" FROM "foo"), TRIM("foo" FROM "foook"), TRIM("foo" FROM "okfoo");
TRIM("foo" FROM "foo") TRIM("foo" FROM "foook") TRIM("foo" FROM "okfoo")
ok ok
select concat_ws(', ','monty','was here','again');
concat_ws(', ','monty','was here','again')
monty, was here, again
select concat_ws(NULL,'a'),concat_ws(',',NULL,'');
concat_ws(NULL,'a') concat_ws(',',NULL,'')
NULL
select concat_ws(',','',NULL,'a');
concat_ws(',','',NULL,'a')
,a
SELECT CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"');
CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"')
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc";"dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
select insert('txs',2,1,'hi'),insert('is ',4,0,'a'),insert('txxxxt',2,4,'es');
insert('txs',2,1,'hi') insert('is ',4,0,'a') insert('txxxxt',2,4,'es')
this is a test
select replace('aaaa','a','b'),replace('aaaa','aa','b'),replace('aaaa','a','bb'),replace('aaaa','','b'),replace('bbbb','a','c');
replace('aaaa','a','b') replace('aaaa','aa','b') replace('aaaa','a','bb') replace('aaaa','','b') replace('bbbb','a','c')
bbbb bb bbbbbbbb aaaa bbbb
select replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL') ;
replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL')
this is a REAL test
select soundex(''),soundex('he'),soundex('hello all folks'),soundex('#3556 in bugdb');
soundex('') soundex('he') soundex('hello all folks') soundex('#3556 in bugdb')
H000 H4142 I51231
select 'mood' sounds like 'mud';
'mood' sounds like 'mud'
1
select 'Glazgo' sounds like 'Liverpool';
'Glazgo' sounds like 'Liverpool'
0
select null sounds like 'null';
null sounds like 'null'
NULL
select 'null' sounds like null;
'null' sounds like null
NULL
select null sounds like null;
null sounds like null
NULL
select md5('hello');
md5('hello')
5d41402abc4b2a76b9719d911017c592
select crc32("123");
crc32("123")
2286445522
select sha('abc');
sha('abc')
a9993e364706816aba3e25717850c26c9cd0d89d
select sha1('abc');
sha1('abc')
a9993e364706816aba3e25717850c26c9cd0d89d
select aes_decrypt(aes_encrypt('abc','1'),'1');
aes_decrypt(aes_encrypt('abc','1'),'1')
abc
select aes_decrypt(aes_encrypt('abc','1'),1);
aes_decrypt(aes_encrypt('abc','1'),1)
abc
select aes_encrypt(NULL,"a");
aes_encrypt(NULL,"a")
NULL
select aes_encrypt("a",NULL);
aes_encrypt("a",NULL)
NULL
select aes_decrypt(NULL,"a");
aes_decrypt(NULL,"a")
NULL
select aes_decrypt("a",NULL);
aes_decrypt("a",NULL)
NULL
select aes_decrypt("a","a");
aes_decrypt("a","a")
NULL
select aes_decrypt(aes_encrypt("","a"),"a");
aes_decrypt(aes_encrypt("","a"),"a")
select repeat('monty',5),concat('*',space(5),'*');
repeat('monty',5) concat('*',space(5),'*')
montymontymontymontymonty * *
select reverse('abc'),reverse('abcd');
reverse('abc') reverse('abcd')
cba dcba
select rpad('a',4,'1'),rpad('a',4,'12'),rpad('abcd',3,'12'), rpad(11, 10 , 22), rpad("ab", 10, 22);
rpad('a',4,'1') rpad('a',4,'12') rpad('abcd',3,'12') rpad(11, 10 , 22) rpad("ab", 10, 22)
a111 a121 abc 1122222222 ab22222222
select lpad('a',4,'1'),lpad('a',4,'12'),lpad('abcd',3,'12'), lpad(11, 10 , 22);
lpad('a',4,'1') lpad('a',4,'12') lpad('abcd',3,'12') lpad(11, 10 , 22)
111a 121a abc 2222222211
select rpad(741653838,17,'0'),lpad(741653838,17,'0');
rpad(741653838,17,'0') lpad(741653838,17,'0')
74165383800000000 00000000741653838
select rpad('abcd',7,'ab'),lpad('abcd',7,'ab');
rpad('abcd',7,'ab') lpad('abcd',7,'ab')
abcdaba abaabcd
select rpad('abcd',1,'ab'),lpad('abcd',1,'ab');
rpad('abcd',1,'ab') lpad('abcd',1,'ab')
a a
select rpad('STRING', 20, CONCAT('p','a','d') );
rpad('STRING', 20, CONCAT('p','a','d') )
STRINGpadpadpadpadpa
select lpad('STRING', 20, CONCAT('p','a','d') );
lpad('STRING', 20, CONCAT('p','a','d') )
padpadpadpadpaSTRING
select LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD'),GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD');
LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD') GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')
NULL NULL
select least(1,2,3) | greatest(16,32,8), least(5,4)*1,greatest(-1.0,1.0)*1,least(3,2,1)*1.0,greatest(1,1.1,1.0),least("10",9),greatest("A","B","0");
least(1,2,3) | greatest(16,32,8) least(5,4)*1 greatest(-1.0,1.0)*1 least(3,2,1)*1.0 greatest(1,1.1,1.0) least("10",9) greatest("A","B","0")
33 4 1.0 1.0 1.1 9 B
select decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000);
decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000)
1
select decode(encode("abcdef","monty"),"monty")="abcdef";
decode(encode("abcdef","monty"),"monty")="abcdef"
1
select quote('\'\"\\test');
quote('\'\"\\test')
'\'"\\test'
select quote(concat('abc\'', '\\cba'));
quote(concat('abc\'', '\\cba'))
'abc\'\\cba'
select quote(1/0), quote('\0\Z');
quote(1/0) quote('\0\Z')
NULL '\0\Z'
select length(quote(concat(char(0),"test")));
length(quote(concat(char(0),"test")))
8
select hex(quote(concat(char(224),char(227),char(230),char(231),char(232),char(234),char(235))));
hex(quote(concat(char(224),char(227),char(230),char(231),char(232),char(234),char(235))))
27E0E3E6E7E8EAEB27
select unhex(hex("foobar")), hex(unhex("1234567890ABCDEF")), unhex("345678"), unhex(NULL);
unhex(hex("foobar")) hex(unhex("1234567890ABCDEF")) unhex("345678") unhex(NULL)
foobar 1234567890ABCDEF 4Vx NULL
select hex(unhex("1")), hex(unhex("12")), hex(unhex("123")), hex(unhex("1234")), hex(unhex("12345")), hex(unhex("123456"));
hex(unhex("1")) hex(unhex("12")) hex(unhex("123")) hex(unhex("1234")) hex(unhex("12345")) hex(unhex("123456"))
01 12 0123 1234 012345 123456
select length(unhex(md5("abrakadabra")));
length(unhex(md5("abrakadabra")))
16
select concat('a', quote(NULL));
concat('a', quote(NULL))
aNULL
select reverse("");
reverse("")
select insert("aa",100,1,"b"),insert("aa",1,3,"b"),left("aa",-1),substring("a",1,2);
insert("aa",100,1,"b") insert("aa",1,3,"b") left("aa",-1) substring("a",1,2)
aa b a
select elt(2,1),field(NULL,"a","b","c"),reverse("");
elt(2,1) field(NULL,"a","b","c") reverse("")
NULL 0
select locate("a","b",2),locate("","a",1);
locate("a","b",2) locate("","a",1)
0 1
select ltrim("a"),rtrim("a"),trim(BOTH "" from "a"),trim(BOTH " " from "a");
ltrim("a") rtrim("a") trim(BOTH "" from "a") trim(BOTH " " from "a")
a a a a
select concat("1","2")|0,concat("1",".5")+0.0;
concat("1","2")|0 concat("1",".5")+0.0
12 1.5
select substring_index("www.tcx.se","",3);
substring_index("www.tcx.se","",3)
select length(repeat("a",100000000)),length(repeat("a",1000*64));
length(repeat("a",100000000)) length(repeat("a",1000*64))
NULL 64000
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select position("0" in "baaa" in (1)),position("0" in "1" in (1,2,3)),position("sql" in ("mysql"));
position("0" in "baaa" in (1)) position("0" in "1" in (1,2,3)) position("sql" in ("mysql"))
1 0 3
Warnings:
Warning 1292 Truncated incorrect DOUBLE value: 'baaa'
select position(("1" in (1,2,3)) in "01");
position(("1" in (1,2,3)) in "01")
2
select length(repeat("a",65500)),length(concat(repeat("a",32000),repeat("a",32000))),length(replace("aaaaa","a",concat(repeat("a",10000)))),length(insert(repeat("a",40000),1,30000,repeat("b",50000)));
length(repeat("a",65500)) length(concat(repeat("a",32000),repeat("a",32000))) length(replace("aaaaa","a",concat(repeat("a",10000)))) length(insert(repeat("a",40000),1,30000,repeat("b",50000)))
65500 64000 50000 60000
select length(repeat("a",1000000)),length(concat(repeat("a",32000),repeat("a",32000),repeat("a",32000))),length(replace("aaaaa","a",concat(repeat("a",32000)))),length(insert(repeat("a",48000),1,1000,repeat("a",48000)));
length(repeat("a",1000000)) length(concat(repeat("a",32000),repeat("a",32000),repeat("a",32000))) length(replace("aaaaa","a",concat(repeat("a",32000)))) length(insert(repeat("a",48000),1,1000,repeat("a",48000)))
1000000 96000 160000 95000
create table t1 ( domain char(50) );
insert into t1 VALUES ("hello.de" ), ("test.de" );
select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@hello.de';
domain
hello.de
select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@test.de';
domain
test.de
drop table t1;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL,
title varchar(255) default NULL,
prio int(10) unsigned default NULL,
category int(10) unsigned default NULL,
program int(10) unsigned default NULL,
bugdesc text,
created datetime default NULL,
modified timestamp NOT NULL,
bugstatus int(10) unsigned default NULL,
submitter int(10) unsigned default NULL
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'Link',1,1,1,'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa','2001-02-28 08:40:16',20010228084016,0,4);
SELECT CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter), '"') FROM t1;
CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter), '"')
"Link";"1";"1";"1";"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"2001-02-28 08:40:16";"20010228084016";"0";"4"
SELECT CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugstatus,submitter), '"') FROM t1;
CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugstatus,submitter), '"')
"Link";"1";"1";"1";"0";"4"
SELECT CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter) FROM t1;
CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified+0,bugstatus,submitter)
Link";"1";"1";"1";"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"2001-02-28 08:40:16";"20010228084016";"0";"4
SELECT bugdesc, REPLACE(bugdesc, 'xxxxxxxxxxxxxxxxxxxx', 'bbbbbbbbbbbbbbbbbbbb') from t1 group by bugdesc;
bugdesc REPLACE(bugdesc, 'xxxxxxxxxxxxxxxxxxxx', 'bbbbbbbbbbbbbbbbbbbb')
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
drop table t1;
CREATE TABLE t1 (id int(11) NOT NULL auto_increment, tmp text NOT NULL, KEY id (id)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1, 'a545f661efdd1fb66fdee3aab79945bf');
SELECT 1 FROM t1 WHERE tmp=AES_DECRYPT(tmp,"password");
1
DROP TABLE t1;
CREATE TABLE t1 (
wid int(10) unsigned NOT NULL auto_increment,
data_podp date default NULL,
status_wnio enum('nowy','podp','real','arch') NOT NULL default 'nowy',
PRIMARY KEY(wid)
);
INSERT INTO t1 VALUES (8,NULL,'real');
INSERT INTO t1 VALUES (9,NULL,'nowy');
SELECT elt(status_wnio,data_podp) FROM t1 GROUP BY wid;
elt(status_wnio,data_podp)
NULL
NULL
DROP TABLE t1;
CREATE TABLE t1 (title text) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('Congress reconvenes in September to debate welfare and adult education');
INSERT INTO t1 VALUES ('House passes the CAREERS bill');
SELECT CONCAT("</a>",RPAD("",(55 - LENGTH(title)),".")) from t1;
CONCAT("</a>",RPAD("",(55 - LENGTH(title)),"."))
NULL
</a>..........................
DROP TABLE t1;
CREATE TABLE t1 (i int, j int);
INSERT INTO t1 VALUES (1,1),(2,2);
SELECT DISTINCT i, ELT(j, '345', '34') FROM t1;
i ELT(j, '345', '34')
1 345
2 34
DROP TABLE t1;
create table t1(a char(4));
insert into t1 values ('one'),(NULL),('two'),('four');
select a, quote(a), isnull(quote(a)), quote(a) is null, ifnull(quote(a), 'n') from t1;
a quote(a) isnull(quote(a)) quote(a) is null ifnull(quote(a), 'n')
one 'one' 0 0 'one'
NULL NULL 0 0 NULL
two 'two' 0 0 'two'
four 'four' 0 0 'four'
drop table t1;
select trim(trailing 'foo' from 'foo');
trim(trailing 'foo' from 'foo')
select trim(leading 'foo' from 'foo');
trim(leading 'foo' from 'foo')
select quote(ltrim(concat(' ', 'a')));
quote(ltrim(concat(' ', 'a')))
'a'
select quote(trim(concat(' ', 'a')));
quote(trim(concat(' ', 'a')))
'a'
CREATE TABLE t1 SELECT 1 UNION SELECT 2 UNION SELECT 3;
SELECT QUOTE('A') FROM t1;
QUOTE('A')
'A'
'A'
'A'
DROP TABLE t1;
select 1=_latin1'1';
1=_latin1'1'
1
select _latin1'1'=1;
_latin1'1'=1
1
select _latin2'1'=1;
_latin2'1'=1
1
select 1=_latin2'1';
1=_latin2'1'
1
select _latin1'1'=_latin2'1';
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation '='
select row('a','b','c') = row('a','b','c');
row('a','b','c') = row('a','b','c')
1
select row('A','b','c') = row('a','b','c');
row('A','b','c') = row('a','b','c')
1
select row('A' COLLATE latin1_bin,'b','c') = row('a','b','c');
row('A' COLLATE latin1_bin,'b','c') = row('a','b','c')
0
select row('A','b','c') = row('a' COLLATE latin1_bin,'b','c');
row('A','b','c') = row('a' COLLATE latin1_bin,'b','c')
0
select row('A' COLLATE latin1_general_ci,'b','c') = row('a' COLLATE latin1_bin,'b','c');
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation '='
select concat(_latin1'a',_latin2'a');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'concat'
select concat(_latin1'a',_latin2'a',_latin5'a');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin5_turkish_ci,COERCIBLE) for operation 'concat'
select concat(_latin1'a',_latin2'a',_latin5'a',_latin7'a');
ERROR HY000: Illegal mix of collations for operation 'concat'
select concat_ws(_latin1'a',_latin2'a');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'concat_ws'
select FIELD('b','A','B');
FIELD('b','A','B')
2
select FIELD('B','A','B');
FIELD('B','A','B')
2
select FIELD('b' COLLATE latin1_bin,'A','B');
FIELD('b' COLLATE latin1_bin,'A','B')
0
select FIELD('b','A' COLLATE latin1_bin,'B');
FIELD('b','A' COLLATE latin1_bin,'B')
0
select FIELD(_latin2'b','A','B');
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'field'
select FIELD('b',_latin2'A','B');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'field'
select FIELD('1',_latin2'3','2',1);
FIELD('1',_latin2'3','2',1)
3
select POSITION(_latin1'B' IN _latin1'abcd');
POSITION(_latin1'B' IN _latin1'abcd')
2
select POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin);
POSITION(_latin1'B' IN _latin1'abcd' COLLATE latin1_bin)
0
select POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd');
POSITION(_latin1'B' COLLATE latin1_bin IN _latin1'abcd')
0
select POSITION(_latin1'B' COLLATE latin1_general_ci IN _latin1'abcd' COLLATE latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_bin,EXPLICIT) and (latin1_general_ci,EXPLICIT) for operation 'locate'
select POSITION(_latin1'B' IN _latin2'abcd');
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE) and (latin1_swedish_ci,COERCIBLE) for operation 'locate'
select FIND_IN_SET(_latin1'B',_latin1'a,b,c,d');
FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')
2
select FIND_IN_SET(_latin1'B' COLLATE latin1_general_ci,_latin1'a,b,c,d' COLLATE latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'find_in_set'
select FIND_IN_SET(_latin1'B',_latin2'a,b,c,d');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'find_in_set'
select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2);
SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin1'd',2)
abcdabc
select SUBSTRING_INDEX(_latin1'abcdabcdabcd',_latin2'd',2);
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'substring_index'
select SUBSTRING_INDEX(_latin1'abcdabcdabcd' COLLATE latin1_general_ci,_latin1'd' COLLATE latin1_bin,2);
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'substring_index'
select _latin1'B' between _latin1'a' and _latin1'c';
_latin1'B' between _latin1'a' and _latin1'c'
1
select _latin1'B' collate latin1_bin between _latin1'a' and _latin1'c';
_latin1'B' collate latin1_bin between _latin1'a' and _latin1'c'
0
select _latin1'B' between _latin1'a' collate latin1_bin and _latin1'c';
_latin1'B' between _latin1'a' collate latin1_bin and _latin1'c'
0
select _latin1'B' between _latin1'a' and _latin1'c' collate latin1_bin;
_latin1'B' between _latin1'a' and _latin1'c' collate latin1_bin
0
select _latin2'B' between _latin1'a' and _latin1'b';
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'between'
select _latin1'B' between _latin2'a' and _latin1'b';
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation 'between'
select _latin1'B' between _latin1'a' and _latin2'b';
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE) for operation 'between'
select _latin1'B' collate latin1_general_ci between _latin1'a' collate latin1_bin and _latin1'b';
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_bin,EXPLICIT), (latin1_swedish_ci,COERCIBLE) for operation 'between'
select _latin1'B' in (_latin1'a',_latin1'b');
_latin1'B' in (_latin1'a',_latin1'b')
1
select _latin1'B' collate latin1_bin in (_latin1'a',_latin1'b');
_latin1'B' collate latin1_bin in (_latin1'a',_latin1'b')
0
select _latin1'B' in (_latin1'a' collate latin1_bin,_latin1'b');
_latin1'B' in (_latin1'a' collate latin1_bin,_latin1'b')
0
select _latin1'B' in (_latin1'a',_latin1'b' collate latin1_bin);
_latin1'B' in (_latin1'a',_latin1'b' collate latin1_bin)
0
select _latin2'B' in (_latin1'a',_latin1'b');
ERROR HY000: Illegal mix of collations (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation ' IN '
select _latin1'B' in (_latin2'a',_latin1'b');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE) for operation ' IN '
select _latin1'B' in (_latin1'a',_latin2'b');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE), (latin1_swedish_ci,COERCIBLE), (latin2_general_ci,COERCIBLE) for operation ' IN '
select _latin1'B' COLLATE latin1_general_ci in (_latin1'a' COLLATE latin1_bin,_latin1'b');
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_bin,EXPLICIT), (latin1_swedish_ci,COERCIBLE) for operation ' IN '
select _latin1'B' COLLATE latin1_general_ci in (_latin1'a',_latin1'b' COLLATE latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_swedish_ci,COERCIBLE), (latin1_bin,EXPLICIT) for operation ' IN '
select collation(bin(130)), coercibility(bin(130));
collation(bin(130)) coercibility(bin(130))
latin1_swedish_ci 4
select collation(oct(130)), coercibility(oct(130));
collation(oct(130)) coercibility(oct(130))
latin1_swedish_ci 4
select collation(conv(130,16,10)), coercibility(conv(130,16,10));
collation(conv(130,16,10)) coercibility(conv(130,16,10))
latin1_swedish_ci 4
select collation(hex(130)), coercibility(hex(130));
collation(hex(130)) coercibility(hex(130))
latin1_swedish_ci 4
select collation(char(130)), coercibility(hex(130));
collation(char(130)) coercibility(hex(130))
binary 4
select collation(format(130,10)), coercibility(format(130,10));
collation(format(130,10)) coercibility(format(130,10))
latin1_swedish_ci 4
select collation(lcase(_latin2'a')), coercibility(lcase(_latin2'a'));
collation(lcase(_latin2'a')) coercibility(lcase(_latin2'a'))
latin2_general_ci 4
select collation(ucase(_latin2'a')), coercibility(ucase(_latin2'a'));
collation(ucase(_latin2'a')) coercibility(ucase(_latin2'a'))
latin2_general_ci 4
select collation(left(_latin2'a',1)), coercibility(left(_latin2'a',1));
collation(left(_latin2'a',1)) coercibility(left(_latin2'a',1))
latin2_general_ci 4
select collation(right(_latin2'a',1)), coercibility(right(_latin2'a',1));
collation(right(_latin2'a',1)) coercibility(right(_latin2'a',1))
latin2_general_ci 4
select collation(substring(_latin2'a',1,1)), coercibility(substring(_latin2'a',1,1));
collation(substring(_latin2'a',1,1)) coercibility(substring(_latin2'a',1,1))
latin2_general_ci 4
select collation(concat(_latin2'a',_latin2'b')), coercibility(concat(_latin2'a',_latin2'b'));
collation(concat(_latin2'a',_latin2'b')) coercibility(concat(_latin2'a',_latin2'b'))
latin2_general_ci 4
select collation(lpad(_latin2'a',4,_latin2'b')), coercibility(lpad(_latin2'a',4,_latin2'b'));
collation(lpad(_latin2'a',4,_latin2'b')) coercibility(lpad(_latin2'a',4,_latin2'b'))
latin2_general_ci 4
select collation(rpad(_latin2'a',4,_latin2'b')), coercibility(rpad(_latin2'a',4,_latin2'b'));
collation(rpad(_latin2'a',4,_latin2'b')) coercibility(rpad(_latin2'a',4,_latin2'b'))
latin2_general_ci 4
select collation(concat_ws(_latin2'a',_latin2'b')), coercibility(concat_ws(_latin2'a',_latin2'b'));
collation(concat_ws(_latin2'a',_latin2'b')) coercibility(concat_ws(_latin2'a',_latin2'b'))
latin2_general_ci 4
select collation(make_set(255,_latin2'a',_latin2'b',_latin2'c')), coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'));
collation(make_set(255,_latin2'a',_latin2'b',_latin2'c')) coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'))
latin2_general_ci 4
select collation(export_set(255,_latin2'y',_latin2'n',_latin2' ')), coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '));
collation(export_set(255,_latin2'y',_latin2'n',_latin2' ')) coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '))
latin2_general_ci 4
select collation(trim(_latin2' a ')), coercibility(trim(_latin2' a '));
collation(trim(_latin2' a ')) coercibility(trim(_latin2' a '))
latin2_general_ci 4
select collation(ltrim(_latin2' a ')), coercibility(ltrim(_latin2' a '));
collation(ltrim(_latin2' a ')) coercibility(ltrim(_latin2' a '))
latin2_general_ci 4
select collation(rtrim(_latin2' a ')), coercibility(rtrim(_latin2' a '));
collation(rtrim(_latin2' a ')) coercibility(rtrim(_latin2' a '))
latin2_general_ci 4
select collation(trim(LEADING _latin2' ' FROM _latin2'a')), coercibility(trim(LEADING _latin2'a' FROM _latin2'a'));
collation(trim(LEADING _latin2' ' FROM _latin2'a')) coercibility(trim(LEADING _latin2'a' FROM _latin2'a'))
latin2_general_ci 4
select collation(trim(TRAILING _latin2' ' FROM _latin2'a')), coercibility(trim(TRAILING _latin2'a' FROM _latin2'a'));
collation(trim(TRAILING _latin2' ' FROM _latin2'a')) coercibility(trim(TRAILING _latin2'a' FROM _latin2'a'))
latin2_general_ci 4
select collation(trim(BOTH _latin2' ' FROM _latin2'a')), coercibility(trim(BOTH _latin2'a' FROM _latin2'a'));
collation(trim(BOTH _latin2' ' FROM _latin2'a')) coercibility(trim(BOTH _latin2'a' FROM _latin2'a'))
latin2_general_ci 4
select collation(repeat(_latin2'a',10)), coercibility(repeat(_latin2'a',10));
collation(repeat(_latin2'a',10)) coercibility(repeat(_latin2'a',10))
latin2_general_ci 4
select collation(reverse(_latin2'ab')), coercibility(reverse(_latin2'ab'));
collation(reverse(_latin2'ab')) coercibility(reverse(_latin2'ab'))
latin2_general_ci 4
select collation(quote(_latin2'ab')), coercibility(quote(_latin2'ab'));
collation(quote(_latin2'ab')) coercibility(quote(_latin2'ab'))
latin2_general_ci 4
select collation(soundex(_latin2'ab')), coercibility(soundex(_latin2'ab'));
collation(soundex(_latin2'ab')) coercibility(soundex(_latin2'ab'))
latin2_general_ci 4
select collation(substring(_latin2'ab',1)), coercibility(substring(_latin2'ab',1));
collation(substring(_latin2'ab',1)) coercibility(substring(_latin2'ab',1))
latin2_general_ci 4
select collation(insert(_latin2'abcd',2,3,_latin2'ef')), coercibility(insert(_latin2'abcd',2,3,_latin2'ef'));
collation(insert(_latin2'abcd',2,3,_latin2'ef')) coercibility(insert(_latin2'abcd',2,3,_latin2'ef'))
latin2_general_ci 4
select collation(replace(_latin2'abcd',_latin2'b',_latin2'B')), coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'));
collation(replace(_latin2'abcd',_latin2'b',_latin2'B')) coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'))
latin2_general_ci 4
select collation(encode('abcd','ab')), coercibility(encode('abcd','ab'));
collation(encode('abcd','ab')) coercibility(encode('abcd','ab'))
binary 4
create table t1
select
bin(130),
oct(130),
conv(130,16,10),
hex(130),
char(130),
format(130,10),
left(_latin2'a',1),
right(_latin2'a',1),
lcase(_latin2'a'),
ucase(_latin2'a'),
substring(_latin2'a',1,1),
concat(_latin2'a',_latin2'b'),
lpad(_latin2'a',4,_latin2'b'),
rpad(_latin2'a',4,_latin2'b'),
concat_ws(_latin2'a',_latin2'b'),
make_set(255,_latin2'a',_latin2'b',_latin2'c'),
export_set(255,_latin2'y',_latin2'n',_latin2' '),
trim(_latin2' a '),
ltrim(_latin2' a '),
rtrim(_latin2' a '),
trim(LEADING _latin2' ' FROM _latin2' a '),
trim(TRAILING _latin2' ' FROM _latin2' a '),
trim(BOTH _latin2' ' FROM _latin2' a '),
repeat(_latin2'a',10),
reverse(_latin2'ab'),
quote(_latin2'ab'),
soundex(_latin2'ab'),
substring(_latin2'ab',1),
insert(_latin2'abcd',2,3,_latin2'ef'),
replace(_latin2'abcd',_latin2'b',_latin2'B'),
encode('abcd','ab')
;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`bin(130)` varchar(64) DEFAULT NULL,
`oct(130)` varchar(64) DEFAULT NULL,
`conv(130,16,10)` varchar(64) DEFAULT NULL,
`hex(130)` varchar(6) NOT NULL DEFAULT '',
`char(130)` varbinary(4) NOT NULL DEFAULT '',
`format(130,10)` varchar(37) NOT NULL DEFAULT '',
`left(_latin2'a',1)` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
`right(_latin2'a',1)` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
`lcase(_latin2'a')` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
`ucase(_latin2'a')` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
`substring(_latin2'a',1,1)` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
`concat(_latin2'a',_latin2'b')` varchar(2) CHARACTER SET latin2 NOT NULL DEFAULT '',
`lpad(_latin2'a',4,_latin2'b')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
`rpad(_latin2'a',4,_latin2'b')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
`concat_ws(_latin2'a',_latin2'b')` varchar(1) CHARACTER SET latin2 NOT NULL DEFAULT '',
`make_set(255,_latin2'a',_latin2'b',_latin2'c')` varchar(5) CHARACTER SET latin2 NOT NULL DEFAULT '',
`export_set(255,_latin2'y',_latin2'n',_latin2' ')` varchar(127) CHARACTER SET latin2 NOT NULL DEFAULT '',
`trim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
`ltrim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
`rtrim(_latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
`trim(LEADING _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
`trim(TRAILING _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
`trim(BOTH _latin2' ' FROM _latin2' a ')` varchar(3) CHARACTER SET latin2 NOT NULL DEFAULT '',
`repeat(_latin2'a',10)` varchar(10) CHARACTER SET latin2 NOT NULL DEFAULT '',
`reverse(_latin2'ab')` varchar(2) CHARACTER SET latin2 NOT NULL DEFAULT '',
`quote(_latin2'ab')` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
`soundex(_latin2'ab')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
`substring(_latin2'ab',1)` varchar(2) CHARACTER SET latin2 NOT NULL DEFAULT '',
`insert(_latin2'abcd',2,3,_latin2'ef')` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
`replace(_latin2'abcd',_latin2'b',_latin2'B')` varchar(4) CHARACTER SET latin2 NOT NULL DEFAULT '',
`encode('abcd','ab')` varbinary(4) NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (a char character set latin2);
insert into t1 values (null);
select charset(a), collation(a), coercibility(a) from t1;
charset(a) collation(a) coercibility(a)
latin2 latin2_general_ci 2
drop table t1;
select charset(null), collation(null), coercibility(null);
charset(null) collation(null) coercibility(null)
binary binary 5
CREATE TABLE t1 (a int, b int);
CREATE TABLE t2 (a int, b int);
INSERT INTO t1 VALUES (1,1),(2,2);
INSERT INTO t2 VALUES (2,2),(3,3);
select t1.*,t2.* from t1 left join t2 on (t1.b=t2.b)
where collation(t2.a) = _utf8'binary' order by t1.a,t2.a;
a b a b
1 1 NULL NULL
2 2 2 2
select t1.*,t2.* from t1 left join t2 on (t1.b=t2.b)
where charset(t2.a) = _utf8'binary' order by t1.a,t2.a;
a b a b
1 1 NULL NULL
2 2 2 2
select t1.*,t2.* from t1 left join t2 on (t1.b=t2.b)
where coercibility(t2.a) = 2 order by t1.a,t2.a;
a b a b
1 1 NULL NULL
2 2 2 2
DROP TABLE t1, t2;
select SUBSTR('abcdefg',3,2);
SUBSTR('abcdefg',3,2)
cd
select SUBSTRING('abcdefg',3,2);
SUBSTRING('abcdefg',3,2)
cd
select SUBSTR('abcdefg',-3,2) FROM DUAL;
SUBSTR('abcdefg',-3,2)
ef
select SUBSTR('abcdefg',-1,5) FROM DUAL;
SUBSTR('abcdefg',-1,5)
g
select SUBSTR('abcdefg',0,0) FROM DUAL;
SUBSTR('abcdefg',0,0)
select SUBSTR('abcdefg',-1,-1) FROM DUAL;
SUBSTR('abcdefg',-1,-1)
select SUBSTR('abcdefg',1,-1) FROM DUAL;
SUBSTR('abcdefg',1,-1)
create table t7 (s1 char);
select * from t7
where concat(s1 collate latin1_general_ci,s1 collate latin1_swedish_ci) = 'AA';
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT) and (latin1_swedish_ci,EXPLICIT) for operation 'concat'
drop table t7;
select substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2),substring_index("1abcd;2abcd;3abcd;4abcd", ';', -2);
substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2) substring_index("1abcd;2abcd;3abcd;4abcd", ';', -2)
1abcd;2abcd 3abcd;4abcd
explain extended select md5('hello');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select md5('hello') AS `md5('hello')`
explain extended select sha('abc');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select sha('abc') AS `sha('abc')`
explain extended select sha1('abc');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select sha('abc') AS `sha1('abc')`
explain extended select soundex('');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select soundex('') AS `soundex('')`
explain extended select 'mood' sounds like 'mud';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select (soundex('mood') = soundex('mud')) AS `'mood' sounds like 'mud'`
explain extended select aes_decrypt(aes_encrypt('abc','1'),'1');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select aes_decrypt(aes_encrypt('abc','1'),'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`
explain extended select concat('*',space(5),'*');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select concat('*',repeat(' ',5),'*') AS `concat('*',space(5),'*')`
explain extended select reverse('abc');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select reverse('abc') AS `reverse('abc')`
explain extended select rpad('a',4,'1');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select rpad('a',4,'1') AS `rpad('a',4,'1')`
explain extended select lpad('a',4,'1');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select lpad('a',4,'1') AS `lpad('a',4,'1')`
explain extended select concat_ws(',','',NULL,'a');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select concat_ws(',','',NULL,'a') AS `concat_ws(',','',NULL,'a')`
explain extended select make_set(255,_latin2'a', _latin2'b', _latin2'c');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a', _latin2'b', _latin2'c')`
explain extended select elt(2,1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select elt(2,1) AS `elt(2,1)`
explain extended select locate("a","b",2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select locate('a','b',2) AS `locate("a","b",2)`
explain extended select format(130,10);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select format(130,10) AS `format(130,10)`
explain extended select char(0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select char(0) AS `char(0)`
explain extended select conv(130,16,10);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select conv(130,16,10) AS `conv(130,16,10)`
explain extended select hex(130);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select hex(130) AS `hex(130)`
explain extended select binary 'HE';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select cast('HE' as char charset binary) AS `binary 'HE'`
explain extended select export_set(255,_latin2'y', _latin2'n', _latin2' ');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y', _latin2'n', _latin2' ')`
explain extended select FIELD('b' COLLATE latin1_bin,'A','B');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select field(('b' collate latin1_bin),'A','B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`
explain extended select FIND_IN_SET(_latin1'B', _latin1'a,b,c,d');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B', _latin1'a,b,c,d')`
explain extended select collation(conv(130,16,10));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select collation(conv(130,16,10)) AS `collation(conv(130,16,10))`
explain extended select coercibility(conv(130,16,10));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`
explain extended select length('\n\t\r\b\0\_\%\\');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select length('\n \r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`
explain extended select bit_length('\n\t\r\b\0\_\%\\');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select bit_length('\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`
explain extended select bit_length('\n\t\r\b\0\_\%\\');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select bit_length('\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`
explain extended select concat('monty',' was here ','again');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select concat('monty',' was here ','again') AS `concat('monty',' was here ','again')`
explain extended select length('hello');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select length('hello') AS `length('hello')`
explain extended select char(ascii('h'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select char(ascii('h')) AS `char(ascii('h'))`
explain extended select ord('h');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select ord('h') AS `ord('h')`
explain extended select quote(1/0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select quote((1 / 0)) AS `quote(1/0)`
explain extended select crc32("123");
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select crc32('123') AS `crc32("123")`
explain extended select replace('aaaa','a','b');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select replace('aaaa','a','b') AS `replace('aaaa','a','b')`
explain extended select insert('txs',2,1,'hi');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select insert('txs',2,1,'hi') AS `insert('txs',2,1,'hi')`
explain extended select left(_latin2'a',1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select left(_latin2'a',1) AS `left(_latin2'a',1)`
explain extended select right(_latin2'a',1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select right(_latin2'a',1) AS `right(_latin2'a',1)`
explain extended select lcase(_latin2'a');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select lcase(_latin2'a') AS `lcase(_latin2'a')`
explain extended select ucase(_latin2'a');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select ucase(_latin2'a') AS `ucase(_latin2'a')`
explain extended select SUBSTR('abcdefg',3,2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select substr('abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`
explain extended select substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select substring_index('1abcd;2abcd;3abcd;4abcd',';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`
explain extended select trim(_latin2' a ');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select trim(_latin2' a ') AS `trim(_latin2' a ')`
explain extended select ltrim(_latin2' a ');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`
explain extended select rtrim(_latin2' a ');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`
explain extended select decode(encode(repeat("a",100000),"monty"),"monty");
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select decode(encode(repeat('a',100000),'monty'),'monty') AS `decode(encode(repeat("a",100000),"monty"),"monty")`
SELECT lpad(12345, 5, "#");
lpad(12345, 5, "#")
12345
SELECT conv(71, 10, 36), conv('1Z', 36, 10);
conv(71, 10, 36) conv('1Z', 36, 10)
1Z 71
SELECT conv(71, 10, 37), conv('1Z', 37, 10), conv(0,1,10),conv(0,0,10), conv(0,-1,10);
conv(71, 10, 37) conv('1Z', 37, 10) conv(0,1,10) conv(0,0,10) conv(0,-1,10)
NULL NULL NULL NULL NULL
create table t1 (id int(1), str varchar(10)) DEFAULT CHARSET=utf8;
insert into t1 values (1,'aaaaaaaaaa'), (2,'bbbbbbbbbb');
create table t2 (id int(1), str varchar(10)) DEFAULT CHARSET=utf8;
insert into t2 values (1,'cccccccccc'), (2,'dddddddddd');
select substring(concat(t1.str, t2.str), 1, 15) "name" from t1, t2
where t2.id=t1.id order by name;
name
aaaaaaaaaaccccc
bbbbbbbbbbddddd
drop table t1, t2;
create table t1 (c1 INT, c2 INT UNSIGNED);
insert into t1 values ('21474836461','21474836461');
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
Warning 1264 Out of range value for column 'c2' at row 1
insert into t1 values ('-21474836461','-21474836461');
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
Warning 1264 Out of range value for column 'c2' at row 1
show warnings;
Level Code Message
Warning 1264 Out of range value for column 'c1' at row 1
Warning 1264 Out of range value for column 'c2' at row 1
select * from t1;
c1 c2
2147483647 4294967295
-2147483648 0
drop table t1;
select left(1234, 3) + 0;
left(1234, 3) + 0
123
create table t1 (a int not null primary key, b varchar(40), c datetime);
insert into t1 (a,b,c) values (1,'Tom','2004-12-10 12:13:14'),(2,'ball games','2004-12-10 12:13:14'), (3,'Basil','2004-12-10 12:13:14'), (4,'Dean','2004-12-10 12:13:14'),(5,'Ellis','2004-12-10 12:13:14'), (6,'Serg','2004-12-10 12:13:14'), (7,'Sergei','2004-12-10 12:13:14'),(8,'Georg','2004-12-10 12:13:14'),(9,'Salle','2004-12-10 12:13:14'),(10,'Sinisa','2004-12-10 12:13:14');
select count(*) as total, left(c,10) as reg from t1 group by reg order by reg desc limit 0,12;
total reg
10 2004-12-10
drop table t1;
select trim(null from 'kate') as "must_be_null";
must_be_null
NULL
select trim('xyz' from null) as "must_be_null";
must_be_null
NULL
select trim(leading NULL from 'kate') as "must_be_null";
must_be_null
NULL
select trim(trailing NULL from 'xyz') as "must_be_null";
must_be_null
NULL
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
a bigint(20) unsigned default NULL,
PRIMARY KEY (id)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES
('0','16307858876001849059');
SELECT CONV('e251273eb74a8ee3', 16, 10);
CONV('e251273eb74a8ee3', 16, 10)
16307858876001849059
EXPLAIN
SELECT id
FROM t1
WHERE a = 16307858876001849059;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
EXPLAIN
SELECT id
FROM t1
WHERE a = CONV('e251273eb74a8ee3', 16, 10);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
DROP TABLE t1;
SELECT CHAR(NULL,121,83,81,'76') as my_column;
my_column
ySQL
SELECT CHAR_LENGTH(CHAR(NULL,121,83,81,'76')) as my_column;
my_column
4
CREATE TABLE t1 (id int PRIMARY KEY, str char(255) NOT NULL);
CREATE TABLE t2 (id int NOT NULL UNIQUE);
INSERT INTO t2 VALUES (1),(2);
INSERT INTO t1 VALUES (1, aes_encrypt('foo', 'bar'));
INSERT INTO t1 VALUES (2, 'not valid');
SELECT t1.id, aes_decrypt(str, 'bar') FROM t1, t2 WHERE t1.id = t2.id;
id aes_decrypt(str, 'bar')
1 foo
2 NULL
SELECT t1.id, aes_decrypt(str, 'bar') FROM t1, t2 WHERE t1.id = t2.id
ORDER BY t1.id;
id aes_decrypt(str, 'bar')
1 foo
2 NULL
DROP TABLE t1, t2;
select field(0,NULL,1,0), field("",NULL,"bar",""), field(0.0,NULL,1.0,0.0);
field(0,NULL,1,0) field("",NULL,"bar","") field(0.0,NULL,1.0,0.0)
3 3 3
select field(NULL,1,2,NULL), field(NULL,1,2,0);
field(NULL,1,2,NULL) field(NULL,1,2,0)
0 0
CREATE TABLE t1 (str varchar(20) PRIMARY KEY);
CREATE TABLE t2 (num int primary key);
INSERT INTO t1 VALUES ('notnumber');
INSERT INTO t2 VALUES (0), (1);
SELECT * FROM t1, t2 WHERE num=str;
str num
notnumber 0
SELECT * FROM t1, t2 WHERE num=substring(str from 1 for 6);
str num
notnumber 0
DROP TABLE t1,t2;
CREATE TABLE t1(
id int(11) NOT NULL auto_increment,
pc int(11) NOT NULL default '0',
title varchar(20) default NULL,
PRIMARY KEY (id)
);
INSERT INTO t1 VALUES
(1, 0, 'Main'),
(2, 1, 'Toys'),
(3, 1, 'Games');
SELECT t1.id, CONCAT_WS('->', t3.title, t2.title, t1.title) as col1
FROM t1 LEFT JOIN t1 AS t2 ON t1.pc=t2.id
LEFT JOIN t1 AS t3 ON t2.pc=t3.id;
id col1
1 Main
2 Main->Toys
3 Main->Games
SELECT t1.id, CONCAT_WS('->', t3.title, t2.title, t1.title) as col1
FROM t1 LEFT JOIN t1 AS t2 ON t1.pc=t2.id
LEFT JOIN t1 AS t3 ON t2.pc=t3.id
WHERE CONCAT_WS('->', t3.title, t2.title, t1.title) LIKE '%Toys%';
id col1
2 Main->Toys
DROP TABLE t1;
CREATE TABLE t1(
trackid int(10) unsigned NOT NULL auto_increment,
trackname varchar(100) NOT NULL default '',
PRIMARY KEY (trackid)
);
CREATE TABLE t2(
artistid int(10) unsigned NOT NULL auto_increment,
artistname varchar(100) NOT NULL default '',
PRIMARY KEY (artistid)
);
CREATE TABLE t3(
trackid int(10) unsigned NOT NULL,
artistid int(10) unsigned NOT NULL,
PRIMARY KEY (trackid,artistid)
);
INSERT INTO t1 VALUES (1, 'April In Paris'), (2, 'Autumn In New York');
INSERT INTO t2 VALUES (1, 'Vernon Duke');
INSERT INTO t3 VALUES (1,1);
SELECT CONCAT_WS(' ', trackname, artistname) trackname, artistname
FROM t1 LEFT JOIN t3 ON t1.trackid=t3.trackid
LEFT JOIN t2 ON t2.artistid=t3.artistid
WHERE CONCAT_WS(' ', trackname, artistname) LIKE '%In%';
trackname artistname
April In Paris Vernon Duke Vernon Duke
Autumn In New York NULL
DROP TABLE t1,t2,t3;
create table t1 (b varchar(5));
insert t1 values ('ab'), ('abc'), ('abcd'), ('abcde');
select *,substring(b,1),substring(b,-1),substring(b,-2),substring(b,-3),substring(b,-4),substring(b,-5) from t1;
b substring(b,1) substring(b,-1) substring(b,-2) substring(b,-3) substring(b,-4) substring(b,-5)
ab ab b ab
abc abc c bc abc
abcd abcd d cd bcd abcd
abcde abcde e de cde bcde abcde
select * from (select *,substring(b,1),substring(b,-1),substring(b,-2),substring(b,-3),substring(b,-4),substring(b,-5) from t1) t;
b substring(b,1) substring(b,-1) substring(b,-2) substring(b,-3) substring(b,-4) substring(b,-5)
ab ab b ab
abc abc c bc abc
abcd abcd d cd bcd abcd
abcde abcde e de cde bcde abcde
drop table t1;
select hex(29223372036854775809), hex(-29223372036854775809);
hex(29223372036854775809) hex(-29223372036854775809)
FFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFF
create table t1 (i int);
insert into t1 values (1000000000),(1);
select lpad(i, 7, ' ') as t from t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def t 253 7 7 Y 128 31 63
t
1000000
1
select rpad(i, 7, ' ') as t from t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def t 253 7 7 Y 128 31 63
t
1000000
1
drop table t1;
select load_file("lkjlkj");
load_file("lkjlkj")
NULL
select ifnull(load_file("lkjlkj"),"it's null");
ifnull(load_file("lkjlkj"),"it's null")
it's null
create table t1 (f1 varchar(4), f2 varchar(64), unique key k1 (f1,f2));
insert into t1 values ( 'test',md5('test')), ('test', sha('test'));
select * from t1 where f1='test' and (f2= md5("test") or f2= md5("TEST"));
f1 f2
test 098f6bcd4621d373cade4e832627b4f6
select * from t1 where f1='test' and (f2= md5("TEST") or f2= md5("test"));
f1 f2
test 098f6bcd4621d373cade4e832627b4f6
select * from t1 where f1='test' and (f2= sha("test") or f2= sha("TEST"));
f1 f2
test a94a8fe5ccb19ba61c4c0873d391e987982fbbd3
select * from t1 where f1='test' and (f2= sha("TEST") or f2= sha("test"));
f1 f2
test a94a8fe5ccb19ba61c4c0873d391e987982fbbd3
drop table t1;
CREATE TABLE t1 (a varchar(10));
INSERT INTO t1 VALUES ('abc'), ('xyz');
SELECT a, CONCAT(a,' ',a) AS c FROM t1
HAVING LEFT(c,LENGTH(c)-INSTR(REVERSE(c)," ")) = a;
a c
abc abc abc
xyz xyz xyz
SELECT a, CONCAT(a,' ',a) AS c FROM t1
HAVING LEFT(CONCAT(a,' ',a),
LENGTH(CONCAT(a,' ',a))-
INSTR(REVERSE(CONCAT(a,' ',a))," ")) = a;
a c
abc abc abc
xyz xyz xyz
DROP TABLE t1;
CREATE TABLE t1 (s varchar(10));
INSERT INTO t1 VALUES ('yadda'), ('yaddy');
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(s) > 'ab';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(`test`.`t1`.`s`) > 'ab')
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM('y' FROM s) > 'ab';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(both 'y' from `test`.`t1`.`s`) > 'ab')
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(LEADING 'y' FROM s) > 'ab';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(leading 'y' from `test`.`t1`.`s`) > 'ab')
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(TRAILING 'y' FROM s) > 'ab';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(trailing 'y' from `test`.`t1`.`s`) > 'ab')
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(BOTH 'y' FROM s) > 'ab';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(both 'y' from `test`.`t1`.`s`) > 'ab')
DROP TABLE t1;
create table t1(f1 varchar(4));
explain extended select encode(f1,'zxcv') as 'enc' from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings:
Note 1003 select encode(NULL,'zxcv') AS `enc` from `test`.`t1`
explain extended select decode(f1,'zxcv') as 'enc' from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 0 0.00 const row not found
Warnings:
Note 1003 select decode(NULL,'zxcv') AS `enc` from `test`.`t1`
drop table t1;
create table t1 (a bigint not null)engine=myisam;
insert into t1 set a = 1024*1024*1024*4;
delete from t1 order by (inet_ntoa(a)) desc limit 10;
drop table t1;
create table t1 (a char(36) not null)engine=myisam;
insert ignore into t1 set a = ' ';
insert ignore into t1 set a = ' ';
select * from t1 order by (oct(a));
a
drop table t1;
End of 4.1 tests
create table t1 (d decimal default null);
insert into t1 values (null);
select format(d, 2) from t1;
format(d, 2)
NULL
drop table t1;
create table t1 (c varchar(40));
insert into t1 values ('y,abc'),('y,abc');
select c, substring_index(lcase(c), @q:=',', -1) as res from t1;
c res
y,abc abc
y,abc abc
drop table t1;
select cast(rtrim(' 20.06 ') as decimal(19,2));
cast(rtrim(' 20.06 ') as decimal(19,2))
20.06
select cast(ltrim(' 20.06 ') as decimal(19,2));
cast(ltrim(' 20.06 ') as decimal(19,2))
20.06
select cast(rtrim(ltrim(' 20.06 ')) as decimal(19,2));
cast(rtrim(ltrim(' 20.06 ')) as decimal(19,2))
20.06
select conv("18383815659218730760",10,10) + 0;
conv("18383815659218730760",10,10) + 0
1.83838156592187e+19
select "18383815659218730760" + 0;
"18383815659218730760" + 0
1.83838156592187e+19
CREATE TABLE t1 (code varchar(10));
INSERT INTO t1 VALUES ('a12'), ('A12'), ('a13');
SELECT ASCII(code), code FROM t1 WHERE code='A12';
ASCII(code) code
97 a12
65 A12
SELECT ASCII(code), code FROM t1 WHERE code='A12' AND ASCII(code)=65;
ASCII(code) code
65 A12
INSERT INTO t1 VALUES ('a12 '), ('A12 ');
SELECT LENGTH(code), code FROM t1 WHERE code='A12';
LENGTH(code) code
3 a12
3 A12
4 a12
5 A12
SELECT LENGTH(code), code FROM t1 WHERE code='A12' AND LENGTH(code)=5;
LENGTH(code) code
5 A12
ALTER TABLE t1 ADD INDEX (code);
CREATE TABLE t2 (id varchar(10) PRIMARY KEY);
INSERT INTO t2 VALUES ('a11'), ('a12'), ('a13'), ('a14');
SELECT * FROM t1 INNER JOIN t2 ON t1.code=t2.id
WHERE t2.id='a12' AND (LENGTH(code)=5 OR code < 'a00');
code id
A12 a12
EXPLAIN EXTENDED
SELECT * FROM t1 INNER JOIN t2 ON code=id
WHERE id='a12' AND (LENGTH(code)=5 OR code < 'a00');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 const PRIMARY PRIMARY 12 const 1 100.00 Using index
1 SIMPLE t1 ref code code 13 const 3 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`code` AS `code`,'a12' AS `id` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`code` = 'a12') and (length(`test`.`t1`.`code`) = 5))
DROP TABLE t1,t2;
select encode(NULL, NULL);
encode(NULL, NULL)
NULL
select encode("data", NULL);
encode("data", NULL)
NULL
select encode(NULL, "password");
encode(NULL, "password")
NULL
select decode(NULL, NULL);
decode(NULL, NULL)
NULL
select decode("data", NULL);
decode("data", NULL)
NULL
select decode(NULL, "password");
decode(NULL, "password")
NULL
select format(NULL, NULL);
format(NULL, NULL)
NULL
select format(pi(), NULL);
format(pi(), NULL)
NULL
select format(NULL, 2);
format(NULL, 2)
NULL
select benchmark(NULL, NULL);
benchmark(NULL, NULL)
NULL
select benchmark(0, NULL);
benchmark(0, NULL)
0
select benchmark(100, NULL);
benchmark(100, NULL)
0
select benchmark(NULL, 1+1);
benchmark(NULL, 1+1)
NULL
select benchmark(-1, 1);
benchmark(-1, 1)
NULL
Warnings:
Error 1411 Incorrect count value: '-1' for function benchmark
set @password="password";
set @my_data="clear text to encode";
select md5(encode(@my_data, "password"));
md5(encode(@my_data, "password"))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, _utf8 "password"));
md5(encode(@my_data, _utf8 "password"))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, binary "password"));
md5(encode(@my_data, binary "password"))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, _latin1 "password"));
md5(encode(@my_data, _latin1 "password"))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, _koi8r "password"));
md5(encode(@my_data, _koi8r "password"))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, (select "password" from dual)));
md5(encode(@my_data, (select "password" from dual)))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, concat("pass", "word")));
md5(encode(@my_data, concat("pass", "word")))
44320fd2b4a0ec92faa2da2122def917
select md5(encode(@my_data, @password));
md5(encode(@my_data, @password))
44320fd2b4a0ec92faa2da2122def917
set @my_data="binary encoded data";
select md5(decode(@my_data, "password"));
md5(decode(@my_data, "password"))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, _utf8 "password"));
md5(decode(@my_data, _utf8 "password"))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, binary "password"));
md5(decode(@my_data, binary "password"))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, _latin1 "password"));
md5(decode(@my_data, _latin1 "password"))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, _koi8r "password"));
md5(decode(@my_data, _koi8r "password"))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, (select "password" from dual)));
md5(decode(@my_data, (select "password" from dual)))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, concat("pass", "word")));
md5(decode(@my_data, concat("pass", "word")))
5bea8c394368dbc03b76684483b7756b
select md5(decode(@my_data, @password));
md5(decode(@my_data, @password))
5bea8c394368dbc03b76684483b7756b
set @dec=5;
select format(pi(), (1+1));
format(pi(), (1+1))
3.14
select format(pi(), (select 3 from dual));
format(pi(), (select 3 from dual))
3.142
select format(pi(), @dec);
format(pi(), @dec)
3.14159
set @bench_count=10;
select benchmark(10, pi());
benchmark(10, pi())
0
select benchmark(5+5, pi());
benchmark(5+5, pi())
0
select benchmark((select 10 from dual), pi());
benchmark((select 10 from dual), pi())
0
select benchmark(@bench_count, pi());
benchmark(@bench_count, pi())
0
select locate('he','hello',-2);
locate('he','hello',-2)
0
select locate('lo','hello',-4294967295);
locate('lo','hello',-4294967295)
0
select locate('lo','hello',4294967295);
locate('lo','hello',4294967295)
0
select locate('lo','hello',-4294967296);
locate('lo','hello',-4294967296)
0
select locate('lo','hello',4294967296);
locate('lo','hello',4294967296)
0
select locate('lo','hello',-4294967297);
locate('lo','hello',-4294967297)
0
select locate('lo','hello',4294967297);
locate('lo','hello',4294967297)
0
select locate('lo','hello',-18446744073709551615);
locate('lo','hello',-18446744073709551615)
0
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select locate('lo','hello',18446744073709551615);
locate('lo','hello',18446744073709551615)
0
select locate('lo','hello',-18446744073709551616);
locate('lo','hello',-18446744073709551616)
0
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select locate('lo','hello',18446744073709551616);
locate('lo','hello',18446744073709551616)
0
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select locate('lo','hello',-18446744073709551617);
locate('lo','hello',-18446744073709551617)
0
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select locate('lo','hello',18446744073709551617);
locate('lo','hello',18446744073709551617)
0
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select left('hello', 10);
left('hello', 10)
hello
select left('hello', 0);
left('hello', 0)
select left('hello', -1);
left('hello', -1)
select left('hello', -4294967295);
left('hello', -4294967295)
select left('hello', 4294967295);
left('hello', 4294967295)
hello
select left('hello', -4294967296);
left('hello', -4294967296)
select left('hello', 4294967296);
left('hello', 4294967296)
hello
select left('hello', -4294967297);
left('hello', -4294967297)
select left('hello', 4294967297);
left('hello', 4294967297)
hello
select left('hello', -18446744073709551615);
left('hello', -18446744073709551615)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select left('hello', 18446744073709551615);
left('hello', 18446744073709551615)
hello
select left('hello', -18446744073709551616);
left('hello', -18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select left('hello', 18446744073709551616);
left('hello', 18446744073709551616)
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select left('hello', -18446744073709551617);
left('hello', -18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select left('hello', 18446744073709551617);
left('hello', 18446744073709551617)
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select right('hello', 10);
right('hello', 10)
hello
select right('hello', 0);
right('hello', 0)
select right('hello', -1);
right('hello', -1)
select right('hello', -4294967295);
right('hello', -4294967295)
select right('hello', 4294967295);
right('hello', 4294967295)
hello
select right('hello', -4294967296);
right('hello', -4294967296)
select right('hello', 4294967296);
right('hello', 4294967296)
hello
select right('hello', -4294967297);
right('hello', -4294967297)
select right('hello', 4294967297);
right('hello', 4294967297)
hello
select right('hello', -18446744073709551615);
right('hello', -18446744073709551615)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select right('hello', 18446744073709551615);
right('hello', 18446744073709551615)
hello
select right('hello', -18446744073709551616);
right('hello', -18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select right('hello', 18446744073709551616);
right('hello', 18446744073709551616)
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select right('hello', -18446744073709551617);
right('hello', -18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select right('hello', 18446744073709551617);
right('hello', 18446744073709551617)
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select substring('hello', 2, -1);
substring('hello', 2, -1)
select substring('hello', -1, 1);
substring('hello', -1, 1)
o
select substring('hello', -2, 1);
substring('hello', -2, 1)
l
select substring('hello', -4294967295, 1);
substring('hello', -4294967295, 1)
select substring('hello', 4294967295, 1);
substring('hello', 4294967295, 1)
select substring('hello', -4294967296, 1);
substring('hello', -4294967296, 1)
select substring('hello', 4294967296, 1);
substring('hello', 4294967296, 1)
select substring('hello', -4294967297, 1);
substring('hello', -4294967297, 1)
select substring('hello', 4294967297, 1);
substring('hello', 4294967297, 1)
select substring('hello', -18446744073709551615, 1);
substring('hello', -18446744073709551615, 1)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select substring('hello', 18446744073709551615, 1);
substring('hello', 18446744073709551615, 1)
select substring('hello', -18446744073709551616, 1);
substring('hello', -18446744073709551616, 1)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select substring('hello', 18446744073709551616, 1);
substring('hello', 18446744073709551616, 1)
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select substring('hello', -18446744073709551617, 1);
substring('hello', -18446744073709551617, 1)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select substring('hello', 18446744073709551617, 1);
substring('hello', 18446744073709551617, 1)
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select substring('hello', 1, -1);
substring('hello', 1, -1)
select substring('hello', 1, -4294967295);
substring('hello', 1, -4294967295)
select substring('hello', 1, 4294967295);
substring('hello', 1, 4294967295)
hello
select substring('hello', 1, -4294967296);
substring('hello', 1, -4294967296)
select substring('hello', 1, 4294967296);
substring('hello', 1, 4294967296)
hello
select substring('hello', 1, -4294967297);
substring('hello', 1, -4294967297)
select substring('hello', 1, 4294967297);
substring('hello', 1, 4294967297)
hello
select substring('hello', 1, -18446744073709551615);
substring('hello', 1, -18446744073709551615)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select substring('hello', 1, 18446744073709551615);
substring('hello', 1, 18446744073709551615)
hello
select substring('hello', 1, -18446744073709551616);
substring('hello', 1, -18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select substring('hello', 1, 18446744073709551616);
substring('hello', 1, 18446744073709551616)
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select substring('hello', 1, -18446744073709551617);
substring('hello', 1, -18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select substring('hello', 1, 18446744073709551617);
substring('hello', 1, 18446744073709551617)
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select substring('hello', -1, -1);
substring('hello', -1, -1)
select substring('hello', -4294967295, -4294967295);
substring('hello', -4294967295, -4294967295)
select substring('hello', 4294967295, 4294967295);
substring('hello', 4294967295, 4294967295)
select substring('hello', -4294967296, -4294967296);
substring('hello', -4294967296, -4294967296)
select substring('hello', 4294967296, 4294967296);
substring('hello', 4294967296, 4294967296)
select substring('hello', -4294967297, -4294967297);
substring('hello', -4294967297, -4294967297)
select substring('hello', 4294967297, 4294967297);
substring('hello', 4294967297, 4294967297)
select substring('hello', -18446744073709551615, -18446744073709551615);
substring('hello', -18446744073709551615, -18446744073709551615)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select substring('hello', 18446744073709551615, 18446744073709551615);
substring('hello', 18446744073709551615, 18446744073709551615)
select substring('hello', -18446744073709551616, -18446744073709551616);
substring('hello', -18446744073709551616, -18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select substring('hello', 18446744073709551616, 18446744073709551616);
substring('hello', 18446744073709551616, 18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select substring('hello', -18446744073709551617, -18446744073709551617);
substring('hello', -18446744073709551617, -18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select substring('hello', 18446744073709551617, 18446744073709551617);
substring('hello', 18446744073709551617, 18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select insert('hello', -1, 1, 'hi');
insert('hello', -1, 1, 'hi')
hello
select insert('hello', -4294967295, 1, 'hi');
insert('hello', -4294967295, 1, 'hi')
hello
select insert('hello', 4294967295, 1, 'hi');
insert('hello', 4294967295, 1, 'hi')
hello
select insert('hello', -4294967296, 1, 'hi');
insert('hello', -4294967296, 1, 'hi')
hello
select insert('hello', 4294967296, 1, 'hi');
insert('hello', 4294967296, 1, 'hi')
hello
select insert('hello', -4294967297, 1, 'hi');
insert('hello', -4294967297, 1, 'hi')
hello
select insert('hello', 4294967297, 1, 'hi');
insert('hello', 4294967297, 1, 'hi')
hello
select insert('hello', -18446744073709551615, 1, 'hi');
insert('hello', -18446744073709551615, 1, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select insert('hello', 18446744073709551615, 1, 'hi');
insert('hello', 18446744073709551615, 1, 'hi')
hello
select insert('hello', -18446744073709551616, 1, 'hi');
insert('hello', -18446744073709551616, 1, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select insert('hello', 18446744073709551616, 1, 'hi');
insert('hello', 18446744073709551616, 1, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select insert('hello', -18446744073709551617, 1, 'hi');
insert('hello', -18446744073709551617, 1, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select insert('hello', 18446744073709551617, 1, 'hi');
insert('hello', 18446744073709551617, 1, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select insert('hello', 1, -1, 'hi');
insert('hello', 1, -1, 'hi')
hi
select insert('hello', 1, -4294967295, 'hi');
insert('hello', 1, -4294967295, 'hi')
hi
select insert('hello', 1, 4294967295, 'hi');
insert('hello', 1, 4294967295, 'hi')
hi
select insert('hello', 1, -4294967296, 'hi');
insert('hello', 1, -4294967296, 'hi')
hi
select insert('hello', 1, 4294967296, 'hi');
insert('hello', 1, 4294967296, 'hi')
hi
select insert('hello', 1, -4294967297, 'hi');
insert('hello', 1, -4294967297, 'hi')
hi
select insert('hello', 1, 4294967297, 'hi');
insert('hello', 1, 4294967297, 'hi')
hi
select insert('hello', 1, -18446744073709551615, 'hi');
insert('hello', 1, -18446744073709551615, 'hi')
hi
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select insert('hello', 1, 18446744073709551615, 'hi');
insert('hello', 1, 18446744073709551615, 'hi')
hi
select insert('hello', 1, -18446744073709551616, 'hi');
insert('hello', 1, -18446744073709551616, 'hi')
hi
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select insert('hello', 1, 18446744073709551616, 'hi');
insert('hello', 1, 18446744073709551616, 'hi')
hi
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select insert('hello', 1, -18446744073709551617, 'hi');
insert('hello', 1, -18446744073709551617, 'hi')
hi
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select insert('hello', 1, 18446744073709551617, 'hi');
insert('hello', 1, 18446744073709551617, 'hi')
hi
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select insert('hello', -1, -1, 'hi');
insert('hello', -1, -1, 'hi')
hello
select insert('hello', -4294967295, -4294967295, 'hi');
insert('hello', -4294967295, -4294967295, 'hi')
hello
select insert('hello', 4294967295, 4294967295, 'hi');
insert('hello', 4294967295, 4294967295, 'hi')
hello
select insert('hello', -4294967296, -4294967296, 'hi');
insert('hello', -4294967296, -4294967296, 'hi')
hello
select insert('hello', 4294967296, 4294967296, 'hi');
insert('hello', 4294967296, 4294967296, 'hi')
hello
select insert('hello', -4294967297, -4294967297, 'hi');
insert('hello', -4294967297, -4294967297, 'hi')
hello
select insert('hello', 4294967297, 4294967297, 'hi');
insert('hello', 4294967297, 4294967297, 'hi')
hello
select insert('hello', -18446744073709551615, -18446744073709551615, 'hi');
insert('hello', -18446744073709551615, -18446744073709551615, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select insert('hello', 18446744073709551615, 18446744073709551615, 'hi');
insert('hello', 18446744073709551615, 18446744073709551615, 'hi')
hello
select insert('hello', -18446744073709551616, -18446744073709551616, 'hi');
insert('hello', -18446744073709551616, -18446744073709551616, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select insert('hello', 18446744073709551616, 18446744073709551616, 'hi');
insert('hello', 18446744073709551616, 18446744073709551616, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
select insert('hello', -18446744073709551617, -18446744073709551617, 'hi');
insert('hello', -18446744073709551617, -18446744073709551617, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select insert('hello', 18446744073709551617, 18446744073709551617, 'hi');
insert('hello', 18446744073709551617, 18446744073709551617, 'hi')
hello
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
select repeat('hello', -1);
repeat('hello', -1)
select repeat('hello', -4294967295);
repeat('hello', -4294967295)
select repeat('hello', 4294967295);
repeat('hello', 4294967295)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select repeat('hello', -4294967296);
repeat('hello', -4294967296)
select repeat('hello', 4294967296);
repeat('hello', 4294967296)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select repeat('hello', -4294967297);
repeat('hello', -4294967297)
select repeat('hello', 4294967297);
repeat('hello', 4294967297)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select repeat('hello', -18446744073709551615);
repeat('hello', -18446744073709551615)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select repeat('hello', 18446744073709551615);
repeat('hello', 18446744073709551615)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select repeat('hello', -18446744073709551616);
repeat('hello', -18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select repeat('hello', 18446744073709551616);
repeat('hello', 18446744073709551616)
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select repeat('hello', -18446744073709551617);
repeat('hello', -18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select repeat('hello', 18446744073709551617);
repeat('hello', 18446744073709551617)
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select space(-1);
space(-1)
select space(-4294967295);
space(-4294967295)
select space(4294967295);
space(4294967295)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select space(-4294967296);
space(-4294967296)
select space(4294967296);
space(4294967296)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select space(-4294967297);
space(-4294967297)
select space(4294967297);
space(4294967297)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select space(-18446744073709551615);
space(-18446744073709551615)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select space(18446744073709551615);
space(18446744073709551615)
NULL
Warnings:
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select space(-18446744073709551616);
space(-18446744073709551616)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select space(18446744073709551616);
space(18446744073709551616)
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select space(-18446744073709551617);
space(-18446744073709551617)
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select space(18446744073709551617);
space(18446744073709551617)
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Warning 1301 Result of repeat() was larger than max_allowed_packet (1048576) - truncated
select rpad('hello', -1, '1');
rpad('hello', -1, '1')
NULL
select rpad('hello', -4294967295, '1');
rpad('hello', -4294967295, '1')
NULL
select rpad('hello', 4294967295, '1');
rpad('hello', 4294967295, '1')
NULL
Warnings:
Warning 1301 Result of rpad() was larger than max_allowed_packet (1048576) - truncated
select rpad('hello', -4294967296, '1');
rpad('hello', -4294967296, '1')
NULL
select rpad('hello', 4294967296, '1');
rpad('hello', 4294967296, '1')
NULL
Warnings:
Warning 1301 Result of rpad() was larger than max_allowed_packet (1048576) - truncated
select rpad('hello', -4294967297, '1');
rpad('hello', -4294967297, '1')
NULL
select rpad('hello', 4294967297, '1');
rpad('hello', 4294967297, '1')
NULL
Warnings:
Warning 1301 Result of rpad() was larger than max_allowed_packet (1048576) - truncated
select rpad('hello', -18446744073709551615, '1');
rpad('hello', -18446744073709551615, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select rpad('hello', 18446744073709551615, '1');
rpad('hello', 18446744073709551615, '1')
NULL
Warnings:
Warning 1301 Result of rpad() was larger than max_allowed_packet (1048576) - truncated
select rpad('hello', -18446744073709551616, '1');
rpad('hello', -18446744073709551616, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select rpad('hello', 18446744073709551616, '1');
rpad('hello', 18446744073709551616, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Warning 1301 Result of rpad() was larger than max_allowed_packet (1048576) - truncated
select rpad('hello', -18446744073709551617, '1');
rpad('hello', -18446744073709551617, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select rpad('hello', 18446744073709551617, '1');
rpad('hello', 18446744073709551617, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Warning 1301 Result of rpad() was larger than max_allowed_packet (1048576) - truncated
select lpad('hello', -1, '1');
lpad('hello', -1, '1')
NULL
select lpad('hello', -4294967295, '1');
lpad('hello', -4294967295, '1')
NULL
select lpad('hello', 4294967295, '1');
lpad('hello', 4294967295, '1')
NULL
Warnings:
Warning 1301 Result of lpad() was larger than max_allowed_packet (1048576) - truncated
select lpad('hello', -4294967296, '1');
lpad('hello', -4294967296, '1')
NULL
select lpad('hello', 4294967296, '1');
lpad('hello', 4294967296, '1')
NULL
Warnings:
Warning 1301 Result of lpad() was larger than max_allowed_packet (1048576) - truncated
select lpad('hello', -4294967297, '1');
lpad('hello', -4294967297, '1')
NULL
select lpad('hello', 4294967297, '1');
lpad('hello', 4294967297, '1')
NULL
Warnings:
Warning 1301 Result of lpad() was larger than max_allowed_packet (1048576) - truncated
select lpad('hello', -18446744073709551615, '1');
lpad('hello', -18446744073709551615, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551615' to INT. Value truncated.
select lpad('hello', 18446744073709551615, '1');
lpad('hello', 18446744073709551615, '1')
NULL
Warnings:
Warning 1301 Result of lpad() was larger than max_allowed_packet (1048576) - truncated
select lpad('hello', -18446744073709551616, '1');
lpad('hello', -18446744073709551616, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551616' to INT. Value truncated.
select lpad('hello', 18446744073709551616, '1');
lpad('hello', 18446744073709551616, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551616' to INT. Value truncated.
Warning 1301 Result of lpad() was larger than max_allowed_packet (1048576) - truncated
select lpad('hello', -18446744073709551617, '1');
lpad('hello', -18446744073709551617, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '-18446744073709551617' to INT. Value truncated.
select lpad('hello', 18446744073709551617, '1');
lpad('hello', 18446744073709551617, '1')
NULL
Warnings:
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Error 1916 Got overflow when converting '18446744073709551617' to INT. Value truncated.
Warning 1301 Result of lpad() was larger than max_allowed_packet (1048576) - truncated
SET @orig_sql_mode = @@SQL_MODE;
SET SQL_MODE=traditional;
SELECT CHAR(0xff,0x8f USING utf8);
CHAR(0xff,0x8f USING utf8)
NULL
Warnings:
Error 1300 Invalid utf8 character string: 'FF8F'
SELECT CHAR(0xff,0x8f USING utf8) IS NULL;
CHAR(0xff,0x8f USING utf8) IS NULL
1
Warnings:
Error 1300 Invalid utf8 character string: 'FF8F'
SET SQL_MODE=@orig_sql_mode;
select substring('abc', cast(2 as unsigned int));
substring('abc', cast(2 as unsigned int))
bc
select repeat('a', cast(2 as unsigned int));
repeat('a', cast(2 as unsigned int))
aa
select rpad('abc', cast(5 as unsigned integer), 'x');
rpad('abc', cast(5 as unsigned integer), 'x')
abcxx
select lpad('abc', cast(5 as unsigned integer), 'x');
lpad('abc', cast(5 as unsigned integer), 'x')
xxabc
create table t1(f1 longtext);
insert into t1 values ("123"),("456");
select substring(f1,1,1) from t1 group by 1;
substring(f1,1,1)
1
4
create table t2(f1 varchar(3));
insert into t1 values ("123"),("456");
select substring(f1,4,1), substring(f1,-4,1) from t2;
substring(f1,4,1) substring(f1,-4,1)
drop table t1,t2;
DROP TABLE IF EXISTS t1;
CREATE TABLE `t1` (
`id` varchar(20) NOT NULL,
`tire` tinyint(3) unsigned NOT NULL,
PRIMARY KEY (`id`)
);
INSERT INTO `t1` (`id`, `tire`) VALUES ('A', 0), ('B', 1),('C', 2);
SELECT REPEAT( '#', tire ) AS A,
REPEAT( '#', tire % 999 ) AS B, tire FROM `t1`;
A B tire
0
# # 1
## ## 2
SELECT REPEAT('0', CAST(0 AS UNSIGNED));
REPEAT('0', CAST(0 AS UNSIGNED))
SELECT REPEAT('0', -2);
REPEAT('0', -2)
SELECT REPEAT('0', 2);
REPEAT('0', 2)
00
DROP TABLE t1;
SELECT UNHEX('G');
UNHEX('G')
NULL
SELECT UNHEX('G') IS NULL;
UNHEX('G') IS NULL
1
SELECT INSERT('abc', 3, 3, '1234');
INSERT('abc', 3, 3, '1234')
ab1234
SELECT INSERT('abc', 4, 3, '1234');
INSERT('abc', 4, 3, '1234')
abc1234
SELECT INSERT('abc', 5, 3, '1234');
INSERT('abc', 5, 3, '1234')
abc
SELECT INSERT('abc', 6, 3, '1234');
INSERT('abc', 6, 3, '1234')
abc
CREATE TABLE t1 (a INT);
CREATE VIEW v1 AS SELECT CRC32(a) AS C FROM t1;
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
SELECT CRC32(a), COUNT(*) FROM t1 GROUP BY 1;
CRC32(a) COUNT(*)
450215437 1
498629140 1
1790921346 1
1842515611 1
2212294583 1
2226203566 1
2366072709 1
2707236321 1
4088798008 1
4194326291 1
SELECT CRC32(a), COUNT(*) FROM t1 GROUP BY 1 ORDER BY 1;
CRC32(a) COUNT(*)
450215437 1
498629140 1
1790921346 1
1842515611 1
2212294583 1
2226203566 1
2366072709 1
2707236321 1
4088798008 1
4194326291 1
SELECT * FROM (SELECT CRC32(a) FROM t1) t2;
CRC32(a)
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321
CREATE TABLE t2 SELECT CRC32(a) FROM t1;
desc t2;
Field Type Null Key Default Extra
CRC32(a) int(10) unsigned YES NULL
SELECT * FROM v1;
C
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321
SELECT * FROM (SELECT * FROM v1) x;
C
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321
DROP TABLE t1, t2;
DROP VIEW v1;
SELECT LOCATE('foo', NULL) FROM DUAL;
LOCATE('foo', NULL)
NULL
SELECT LOCATE(NULL, 'o') FROM DUAL;
LOCATE(NULL, 'o')
NULL
SELECT LOCATE(NULL, NULL) FROM DUAL;
LOCATE(NULL, NULL)
NULL
SELECT LOCATE('foo', NULL) IS NULL FROM DUAL;
LOCATE('foo', NULL) IS NULL
1
SELECT LOCATE(NULL, 'o') IS NULL FROM DUAL;
LOCATE(NULL, 'o') IS NULL
1
SELECT LOCATE(NULL, NULL) IS NULL FROM DUAL;
LOCATE(NULL, NULL) IS NULL
1
SELECT ISNULL(LOCATE('foo', NULL)) FROM DUAL;
ISNULL(LOCATE('foo', NULL))
1
SELECT ISNULL(LOCATE(NULL, 'o')) FROM DUAL;
ISNULL(LOCATE(NULL, 'o'))
1
SELECT ISNULL(LOCATE(NULL, NULL)) FROM DUAL;
ISNULL(LOCATE(NULL, NULL))
1
SELECT LOCATE('foo', NULL) <=> NULL FROM DUAL;
LOCATE('foo', NULL) <=> NULL
1
SELECT LOCATE(NULL, 'o') <=> NULL FROM DUAL;
LOCATE(NULL, 'o') <=> NULL
1
SELECT LOCATE(NULL, NULL) <=> NULL FROM DUAL;
LOCATE(NULL, NULL) <=> NULL
1
CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, a varchar(10), p varchar(10));
INSERT INTO t1 VALUES (1, 'foo', 'o');
INSERT INTO t1 VALUES (2, 'foo', NULL);
INSERT INTO t1 VALUES (3, NULL, 'o');
INSERT INTO t1 VALUES (4, NULL, NULL);
SELECT id, LOCATE(a,p) FROM t1;
id LOCATE(a,p)
1 0
2 NULL
3 NULL
4 NULL
SELECT id, LOCATE(a,p) IS NULL FROM t1;
id LOCATE(a,p) IS NULL
1 0
2 1
3 1
4 1
SELECT id, ISNULL(LOCATE(a,p)) FROM t1;
id ISNULL(LOCATE(a,p))
1 0
2 1
3 1
4 1
SELECT id, LOCATE(a,p) <=> NULL FROM t1;
id LOCATE(a,p) <=> NULL
1 0
2 1
3 1
4 1
SELECT id FROM t1 WHERE LOCATE(a,p) IS NULL;
id
2
3
4
SELECT id FROM t1 WHERE LOCATE(a,p) <=> NULL;
id
2
3
4
DROP TABLE t1;
SELECT SUBSTR('foo',1,0) FROM DUAL;
SUBSTR('foo',1,0)
SELECT SUBSTR('foo',1,CAST(0 AS SIGNED)) FROM DUAL;
SUBSTR('foo',1,CAST(0 AS SIGNED))
SELECT SUBSTR('foo',1,CAST(0 AS UNSIGNED)) FROM DUAL;
SUBSTR('foo',1,CAST(0 AS UNSIGNED))
CREATE TABLE t1 (a varchar(10), len int unsigned);
INSERT INTO t1 VALUES ('bar', 2), ('foo', 0);
SELECT SUBSTR(a,1,len) FROM t1;
SUBSTR(a,1,len)
ba
DROP TABLE t1;
CREATE TABLE t1 AS SELECT CHAR(0x414243) as c1;
SELECT HEX(c1) from t1;
HEX(c1)
414243
DROP TABLE t1;
CREATE VIEW v1 AS SELECT CHAR(0x414243) as c1;
SELECT HEX(c1) from v1;
HEX(c1)
414243
DROP VIEW v1;
create table t1(a float);
insert into t1 values (1.33);
select format(a, 2) from t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def format(a, 2) 253 49 4 Y 0 31 8
format(a, 2)
1.33
drop table t1;
CREATE TABLE t1 (c DATE, aa VARCHAR(30));
INSERT INTO t1 VALUES ('2008-12-31','aaaaaa');
SELECT DATE_FORMAT(c, GET_FORMAT(DATE, 'eur')) h, CONCAT(UPPER(aa),', ', aa) i FROM t1;
h i
31.12.2008 AAAAAA, aaaaaa
DROP TABLE t1;
#
# BUG#44774: load_file function produces valgrind warnings
#
CREATE TABLE t1 (a TINYBLOB);
INSERT INTO t1 VALUES ('aaaaaaaa');
SELECT LOAD_FILE(a) FROM t1;
LOAD_FILE(a)
NULL
DROP TABLE t1;
CREATE TABLE t1 (f2 VARCHAR(20));
CREATE TABLE t2 (f2 VARCHAR(20));
INSERT INTO t1 VALUES ('MIN'),('MAX');
INSERT INTO t2 VALUES ('LOAD');
SELECT CONCAT_WS('_', (SELECT t2.f2 FROM t2), t1.f2) AS concat_name FROM t1;
concat_name
LOAD_MIN
LOAD_MAX
DROP TABLE t1, t2;
End of 5.0 tests
drop table if exists t1;
create table t1(f1 tinyint default null)engine=myisam;
insert into t1 values (-1),(null);
explain select 1 as a from t1,(select decode(f1,f1) as b from t1) a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
2 DERIVED t1 ALL NULL NULL NULL NULL 2
explain select 1 as a from t1,(select encode(f1,f1) as b from t1) a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
2 DERIVED t1 ALL NULL NULL NULL NULL 2
drop table t1;
#
# Bug#49141: Encode function is significantly slower in 5.1 compared to 5.0
#
DROP TABLE IF EXISTS t1, t2;
CREATE TABLE t1 (a VARCHAR(20), b INT);
CREATE TABLE t2 (a VARCHAR(20), b INT);
INSERT INTO t1 VALUES ('ABC', 1);
INSERT INTO t2 VALUES ('ABC', 1);
SELECT DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b), t2.a)
FROM t1,t2 WHERE t1.b = t1.b > 0 GROUP BY t2.b;
DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b), t2.a)
secret
SELECT DECODE((SELECT ENCODE('secret', 'ABC') FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b), t2.a)
FROM t1,t2 WHERE t1.b = t1.b > 0 GROUP BY t2.b;
DECODE((SELECT ENCODE('secret', 'ABC') FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b), t2.a)
secret
SELECT DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b), 'ABC')
FROM t1,t2 WHERE t1.b = t1.b > 0 GROUP BY t2.b;
DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b), 'ABC')
secret
TRUNCATE TABLE t1;
TRUNCATE TABLE t2;
INSERT INTO t1 VALUES ('EDF', 3), ('BCD', 2), ('ABC', 1);
INSERT INTO t2 VALUES ('EDF', 3), ('BCD', 2), ('ABC', 1);
SELECT DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b LIMIT 1), t2.a)
FROM t2 WHERE t2.b = 1 GROUP BY t2.b;
DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b LIMIT 1), t2.a)
secret
DROP TABLE t1, t2;
#
# Bug#52164 Assertion failed: param.sort_length, file .\filesort.cc, line 149
#
CREATE TABLE t1 (a LONGBLOB NOT NULL);
INSERT INTO t1 VALUES (''),('');
SELECT 1 FROM t1, t1 t2
ORDER BY QUOTE(t1.a);
1
1
1
1
1
DROP TABLE t1;
#
# Bug#57913 large negative number to string conversion functions crash
# Bug#57810 case/when/then : Assertion failed: length || !scale
#
SELECT '1' IN ('1', SUBSTRING(-9223372036854775809, 1));
'1' IN ('1', SUBSTRING(-9223372036854775809, 1))
1
SELECT CONVERT(('' IN (REVERSE(CAST(('') AS DECIMAL)), '')), CHAR(3));
CONVERT(('' IN (REVERSE(CAST(('') AS DECIMAL)), '')), CHAR(3))
1
Warnings:
Warning 1292 Truncated incorrect DECIMAL value: ''
#
# Bug#58165: "my_empty_string" gets modified and causes LOAD DATA to fail
# and other crashes
#
CREATE TABLE t1 ( a TEXT );
SELECT 'aaaaaaaaaaaaaa' INTO OUTFILE 'bug58165.txt';
SELECT insert( substring_index( 'a', 'a', 'b' ), 1, 0, 'x' );
insert( substring_index( 'a', 'a', 'b' ), 1, 0, 'x' )
x
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'b'
LOAD DATA INFILE 'bug58165.txt' INTO TABLE t1;
SELECT * FROM t1;
a
aaaaaaaaaaaaaa
DROP TABLE t1;
End of 5.1 tests
Reference in a new issue View git blame Copy permalink