mirror of
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6ec7976df9
for class Item_func_trim.
For 4.1 it caused wrong output for EXPLAIN EXTENDED commands
if expressions with the TRIM function of two arguments were used.
For 5.0 it caused an error message when trying to select
from a view with the TRIM function of two arguments.
This unexpected error message was due to the fact that the
print method for the class Item_func_trim was inherited from
the class Item_func. Yet the TRIM function does not take a list
of its arguments. Rather it takes the arguments in the form:
[{BOTH | LEADING | TRAILING} [remstr] FROM] str) |
[remstr FROM] str
mysql-test/r/func_str.result:
Added a test case for bug #17526: uncorrect print method
for class Item_func_trim.
mysql-test/t/func_str.test:
Added a test case for bug #17526: incorrect print method
for class Item_func_trim.
sql/item_strfunc.cc:
Fixed bug #17526: incorrect print method
for class Item_func_trim.
Added an implementation for the virtual function print
in the class Item_func_trim.
The implementation takes into account the fact the TRIM
function takes the arguments in the following forms:
[{BOTH | LEADING | TRAILING} [remstr] FROM] str) |
[remstr FROM] str
sql/item_strfunc.h:
Fixed bug #17526: incorrect print method
for class Item_func_trim.
Added an implementation for the virtual function print
in the class Item_func_trim.
Declared a virtual method to return the mode of the TRIM
function: LEADING, TRAILING or BOTH.
Added implementations of this method for Item_func_trim and
its descendants Item_func_ltrim and Item_func_rtrim.
1067 lines
49 KiB
Text
1067 lines
49 KiB
Text
drop table if exists t1;
|
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set names latin1;
|
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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
|
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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 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');
|
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instr('hello','HE') instr('hello',binary 'HE') instr(binary 'hello','HE')
|
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1 0 0
|
||
select position(binary 'll' in 'hello'),position('a' in binary 'hello');
|
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position(binary 'll' in 'hello') position('a' in binary 'hello')
|
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3 0
|
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select left('hello',2),right('hello',2),substring('hello',2,2),mid('hello',1,5) ;
|
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left('hello',2) right('hello',2) substring('hello',2,2) mid('hello',1,5)
|
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he lo el hello
|
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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)
|
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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)
|
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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);
|
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substring_index('aaaaaaaaa1','aa',-2)
|
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aa1
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select substring_index('aaaaaaaaa1','aa',-3);
|
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substring_index('aaaaaaaaa1','aa',-3)
|
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aaaa1
|
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select substring_index('aaaaaaaaa1','aa',-4);
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||
substring_index('aaaaaaaaa1','aa',-4)
|
||
aaaaaa1
|
||
select substring_index('aaaaaaaaa1','aa',-5);
|
||
substring_index('aaaaaaaaa1','aa',-5)
|
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aaaaaaaaa1
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||
select substring_index('aaaaaaaaa1','aaa',-1);
|
||
substring_index('aaaaaaaaa1','aaa',-1)
|
||
1
|
||
select substring_index('aaaaaaaaa1','aaa',-2);
|
||
substring_index('aaaaaaaaa1','aaa',-2)
|
||
aaa1
|
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select substring_index('aaaaaaaaa1','aaa',-3);
|
||
substring_index('aaaaaaaaa1','aaa',-3)
|
||
aaaaaa1
|
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select substring_index('aaaaaaaaa1','aaa',-4);
|
||
substring_index('aaaaaaaaa1','aaa',-4)
|
||
|
||
select substring_index('the king of thethe hill','the',-2);
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substring_index('the king of thethe hill','the',-2)
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the hill
|
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select substring_index('the king of the the hill','the',-2);
|
||
substring_index('the king of the the hill','the',-2)
|
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the hill
|
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select substring_index('the king of the the hill','the',-2);
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substring_index('the king of the the hill','the',-2)
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||
the hill
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select substring_index('the king of the the hill',' the ',-1);
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substring_index('the king of the the hill',' the ',-1)
|
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hill
|
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select substring_index('the king of the the hill',' the ',-2);
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substring_index('the king of the the hill',' the ',-2)
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the hill
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select substring_index('the king of the the hill',' ',-1);
|
||
substring_index('the king of the the hill',' ',-1)
|
||
hill
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select substring_index('the king of the the hill',' ',-2);
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substring_index('the king of the the hill',' ',-2)
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the hill
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select substring_index('the king of the the hill',' ',-3);
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substring_index('the king of the the hill',' ',-3)
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the hill
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select substring_index('the king of the the hill',' ',-4);
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substring_index('the king of the the hill',' ',-4)
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the the hill
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select substring_index('the king of the the hill',' ',-5);
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substring_index('the king of the the hill',' ',-5)
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of the the hill
|
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select substring_index('the king of the.the hill','the',-2);
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substring_index('the king of the.the hill','the',-2)
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.the hill
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select substring_index('the king of thethethe.the hill','the',-3);
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substring_index('the king of thethethe.the hill','the',-3)
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the.the hill
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select substring_index('the king of thethethe.the hill','the',-1);
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substring_index('the king of thethethe.the hill','the',-1)
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hill
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select substring_index('the king of the the hill','the',1);
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substring_index('the king of the the hill','the',1)
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select substring_index('the king of the the hill','the',2);
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substring_index('the king of the the hill','the',2)
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the king of
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select substring_index('the king of the the hill','the',3);
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substring_index('the king of the the hill','the',3)
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the king of the
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select concat(':',ltrim(' left '),':',rtrim(' right '),':');
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concat(':',ltrim(' left '),':',rtrim(' right '),':')
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:left : right:
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select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
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concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
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:left: right:
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select concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':');
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concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':')
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:m:y:s:
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select concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':');
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concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':')
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:my:sql:
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select concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':');
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concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':')
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:my:sql:
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select TRIM("foo" FROM "foo"), TRIM("foo" FROM "foook"), TRIM("foo" FROM "okfoo");
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TRIM("foo" FROM "foo") TRIM("foo" FROM "foook") TRIM("foo" FROM "okfoo")
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ok ok
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select concat_ws(', ','monty','was here','again');
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concat_ws(', ','monty','was here','again')
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monty, was here, again
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select concat_ws(NULL,'a'),concat_ws(',',NULL,'');
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concat_ws(NULL,'a') concat_ws(',',NULL,'')
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NULL
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select concat_ws(',','',NULL,'a');
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concat_ws(',','',NULL,'a')
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,a
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SELECT CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"');
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CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"')
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc";"dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
|
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select insert('txs',2,1,'hi'),insert('is ',4,0,'a'),insert('txxxxt',2,4,'es');
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insert('txs',2,1,'hi') insert('is ',4,0,'a') insert('txxxxt',2,4,'es')
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this is a test
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select replace('aaaa','a','b'),replace('aaaa','aa','b'),replace('aaaa','a','bb'),replace('aaaa','','b'),replace('bbbb','a','c');
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replace('aaaa','a','b') replace('aaaa','aa','b') replace('aaaa','a','bb') replace('aaaa','','b') replace('bbbb','a','c')
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bbbb bb bbbbbbbb aaaa bbbb
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select replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL') ;
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replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL')
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this is a REAL test
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select soundex(''),soundex('he'),soundex('hello all folks'),soundex('#3556 in bugdb');
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soundex('') soundex('he') soundex('hello all folks') soundex('#3556 in bugdb')
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H000 H4142 I51231
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select 'mood' sounds like 'mud';
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'mood' sounds like 'mud'
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1
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select 'Glazgo' sounds like 'Liverpool';
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'Glazgo' sounds like 'Liverpool'
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0
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select null sounds like 'null';
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null sounds like 'null'
|
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NULL
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select 'null' sounds like null;
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'null' sounds like null
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NULL
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select null sounds like null;
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null sounds like null
|
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NULL
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select md5('hello');
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md5('hello')
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5d41402abc4b2a76b9719d911017c592
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select crc32("123");
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crc32("123")
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2286445522
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||
select sha('abc');
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sha('abc')
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a9993e364706816aba3e25717850c26c9cd0d89d
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||
select sha1('abc');
|
||
sha1('abc')
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||
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)
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abc
|
||
select aes_encrypt(NULL,"a");
|
||
aes_encrypt(NULL,"a")
|
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NULL
|
||
select aes_encrypt("a",NULL);
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||
aes_encrypt("a",NULL)
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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")
|
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NULL
|
||
select aes_decrypt(aes_encrypt("","a"),"a");
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||
aes_decrypt(aes_encrypt("","a"),"a")
|
||
|
||
select repeat('monty',5),concat('*',space(5),'*');
|
||
repeat('monty',5) concat('*',space(5),'*')
|
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montymontymontymontymonty * *
|
||
select reverse('abc'),reverse('abcd');
|
||
reverse('abc') reverse('abcd')
|
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cba dcba
|
||
select rpad('a',4,'1'),rpad('a',4,'12'),rpad('abcd',3,'12'), rpad(11, 10 , 22), rpad("ab", 10, 22);
|
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rpad('a',4,'1') rpad('a',4,'12') rpad('abcd',3,'12') rpad(11, 10 , 22) rpad("ab", 10, 22)
|
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a111 a121 abc 1122222222 ab22222222
|
||
select lpad('a',4,'1'),lpad('a',4,'12'),lpad('abcd',3,'12'), lpad(11, 10 , 22);
|
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lpad('a',4,'1') lpad('a',4,'12') lpad('abcd',3,'12') lpad(11, 10 , 22)
|
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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')
|
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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
|
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select LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD'),GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD');
|
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LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD') GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')
|
||
HAROLD HARRY
|
||
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
|
||
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(14) 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('b',_latin2'A','B',1);
|
||
FIELD('b',_latin2'A','B',1)
|
||
1
|
||
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 'substr_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 'substr_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))
|
||
latin1_swedish_ci 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')
|
||
;
|
||
Warnings:
|
||
Warning 1265 Data truncated for column 'format(130,10)' at row 1
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`bin(130)` char(64) NOT NULL default '',
|
||
`oct(130)` char(64) NOT NULL default '',
|
||
`conv(130,16,10)` char(64) NOT NULL default '',
|
||
`hex(130)` char(6) NOT NULL default '',
|
||
`char(130)` char(1) NOT NULL default '',
|
||
`format(130,10)` char(4) NOT NULL default '',
|
||
`left(_latin2'a',1)` char(1) character set latin2 NOT NULL default '',
|
||
`right(_latin2'a',1)` char(1) character set latin2 NOT NULL default '',
|
||
`lcase(_latin2'a')` char(1) character set latin2 NOT NULL default '',
|
||
`ucase(_latin2'a')` char(1) character set latin2 NOT NULL default '',
|
||
`substring(_latin2'a',1,1)` char(1) character set latin2 NOT NULL default '',
|
||
`concat(_latin2'a',_latin2'b')` char(2) character set latin2 NOT NULL default '',
|
||
`lpad(_latin2'a',4,_latin2'b')` char(4) character set latin2 NOT NULL default '',
|
||
`rpad(_latin2'a',4,_latin2'b')` char(4) character set latin2 NOT NULL default '',
|
||
`concat_ws(_latin2'a',_latin2'b')` char(1) character set latin2 NOT NULL default '',
|
||
`make_set(255,_latin2'a',_latin2'b',_latin2'c')` char(5) character set latin2 NOT NULL default '',
|
||
`export_set(255,_latin2'y',_latin2'n',_latin2' ')` char(127) character set latin2 NOT NULL default '',
|
||
`trim(_latin2' a ')` char(3) character set latin2 NOT NULL default '',
|
||
`ltrim(_latin2' a ')` char(3) character set latin2 NOT NULL default '',
|
||
`rtrim(_latin2' a ')` char(3) character set latin2 NOT NULL default '',
|
||
`trim(LEADING _latin2' ' FROM _latin2' a ')` char(3) character set latin2 NOT NULL default '',
|
||
`trim(TRAILING _latin2' ' FROM _latin2' a ')` char(3) character set latin2 NOT NULL default '',
|
||
`trim(BOTH _latin2' ' FROM _latin2' a ')` char(3) character set latin2 NOT NULL default '',
|
||
`repeat(_latin2'a',10)` char(10) character set latin2 NOT NULL default '',
|
||
`reverse(_latin2'ab')` char(2) character set latin2 NOT NULL default '',
|
||
`quote(_latin2'ab')` char(6) character set latin2 NOT NULL default '',
|
||
`soundex(_latin2'ab')` char(4) character set latin2 NOT NULL default '',
|
||
`substring(_latin2'ab',1)` char(2) character set latin2 NOT NULL default '',
|
||
`insert(_latin2'abcd',2,3,_latin2'ef')` char(6) character set latin2 NOT NULL default '',
|
||
`replace(_latin2'abcd',_latin2'b',_latin2'B')` char(4) character set latin2 NOT NULL default '',
|
||
`encode('abcd','ab')` binary(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'), sha('abc'), sha1('abc'), soundex(''), 'mood' sounds like 'mud', aes_decrypt(aes_encrypt('abc','1'),'1'),concat('*',space(5),'*'), reverse('abc'), rpad('a',4,'1'), lpad('a',4,'1'), concat_ws(',','',NULL,'a'),make_set(255,_latin2'a',_latin2'b',_latin2'c'),elt(2,1),locate("a","b",2),format(130,10),char(0),conv(130,16,10),hex(130),binary 'HE', export_set(255,_latin2'y',_latin2'n',_latin2' '),FIELD('b' COLLATE latin1_bin,'A','B'),FIND_IN_SET(_latin1'B',_latin1'a,b,c,d'),collation(conv(130,16,10)), coercibility(conv(130,16,10)),length('\n\t\r\b\0\_\%\\'),bit_length('\n\t\r\b\0\_\%\\'),bit_length('\n\t\r\b\0\_\%\\'),concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h'),quote(1/0),crc32("123"),replace('aaaa','a','b'),insert('txs',2,1,'hi'),left(_latin2'a',1),right(_latin2'a',1),lcase(_latin2'a'),ucase(_latin2'a'),SUBSTR('abcdefg',3,2),substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2),trim(_latin2' a '),ltrim(_latin2' a '),rtrim(_latin2' a '), decode(encode(repeat("a",100000),"monty"),"monty");
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
||
Warnings:
|
||
Note 1003 select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,cast(_latin1'HE' as char charset binary) AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate _latin1'latin1_bin'),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n \r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n \r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substr_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000))) 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
|
||
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 1265 Data truncated for column 'c1' at row 1
|
||
Warning 1265 Data truncated for column 'c2' at row 1
|
||
insert into t1 values ('-21474836461','-21474836461');
|
||
Warnings:
|
||
Warning 1265 Data truncated for column 'c1' at row 1
|
||
Warning 1265 Data truncated for column 'c2' at row 1
|
||
show warnings;
|
||
Level Code Message
|
||
Warning 1265 Data truncated for column 'c1' at row 1
|
||
Warning 1265 Data truncated 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
|
||
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 Extra
|
||
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
|
||
Warnings:
|
||
Note 1003 select test.t1.s AS `s` from test.t1 where (trim(test.t1.s) > _latin1'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 Extra
|
||
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
|
||
Warnings:
|
||
Note 1003 select test.t1.s AS `s` from test.t1 where (trim(both _latin1'y' from test.t1.s) > _latin1'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 Extra
|
||
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
|
||
Warnings:
|
||
Note 1003 select test.t1.s AS `s` from test.t1 where (trim(leading _latin1'y' from test.t1.s) > _latin1'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 Extra
|
||
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
|
||
Warnings:
|
||
Note 1003 select test.t1.s AS `s` from test.t1 where (trim(trailing _latin1'y' from test.t1.s) > _latin1'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 Extra
|
||
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
|
||
Warnings:
|
||
Note 1003 select test.t1.s AS `s` from test.t1 where (trim(both _latin1'y' from test.t1.s) > _latin1'ab')
|
||
DROP TABLE t1;
|
||
End of 4.1 tests
|