mirror of
https://github.com/MariaDB/server.git
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98 lines
3.7 KiB
Text
98 lines
3.7 KiB
Text
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
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hello
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hellomonty
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length('\n\t\r\b\0\_\%\\')
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10
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concat('monty',' was here ','again') length('hello') char(ascii('h'))
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monty was here again 5 h
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locate('he','hello') locate('he','hello',2) locate('lo','hello',2)
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1 0 4
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instr('hello','he')
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1
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position('ll' in 'hello') position('a' in 'hello')
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3 0
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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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concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1))
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happy
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substring_index('www.tcx.se','.',-2) substring_index('www.tcx.se','.',1)
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tcx.se www
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substring_index('www.tcx.se','tcx',1) substring_index('www.tcx.se','tcx',-1)
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www. .se
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substring_index('.tcx.se','.',-2) substring_index('.tcx.se','.tcx',-1)
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tcx.se .se
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concat(':',ltrim(' left '),':',rtrim(' right '),':')
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:left : right:
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concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
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:left: right:
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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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concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':')
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:my:sql:
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concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':')
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:my:sql:
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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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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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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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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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soundex('') soundex('he') soundex('hello all folks')
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H000 H4142
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password('test') length(encrypt('test')) encrypt('test','aa')
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378b243e220ca493 13 aaqPiZY5xR5l.
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md5('hello')
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5d41402abc4b2a76b9719d911017c592
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repeat('monty',5) concat('*',space(5),'*')
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montymontymontymontymonty * *
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reverse('abc') reverse('abcd')
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cba dcba
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rpad('a',4,'1') rpad('a',4,'12') rpad('abcd',3,'12')
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a111 a121 abc
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lpad('a',4,'1') lpad('a',4,'12') lpad('abcd',3,'12')
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111a 121a abc
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rpad(741653838,17,'0') lpad(741653838,17,'0')
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74165383800000000 00000000741653838
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rpad('abcd',7,'ab') lpad('abcd',7,'ab')
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abcdaba abaabcd
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rpad('abcd',1,'ab') lpad('abcd',1,'ab')
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a a
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LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD') GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')
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HAROLD HARRY
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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")
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33 4 1.0 1.0 1.1 9 B
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decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000)
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1
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decode(encode("abcdef","monty"),"monty")="abcdef"
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1
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reverse("")
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insert("aa",100,1,"b") insert("aa",1,3,"b") left("aa",-1) substring("a",1,2)
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aa b a
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elt(2,1) field(NULL,"a","b","c") reverse("")
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NULL 0
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locate("a","b",2) locate("","a",1)
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0 1
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ltrim("a") rtrim("a") trim(BOTH "" from "a") trim(BOTH " " from "a")
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a a a a
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concat("1","2")|0 concat("1",".5")+0.0
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12 1.5
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substring_index("www.tcx.se","",3)
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length(repeat("a",100000000)) length(repeat("a",1000*64))
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NULL 64000
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position("0" in "baaa" in (1)) position("0" in "1" in (1,2,3)) position("sql" in ("mysql"))
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1 0 3
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position(("1" in (1,2,3)) in "01")
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2
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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)))
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65500 64000 50000 60000
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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)))
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1000000 96000 160000 95000
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domain
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hello.de
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domain
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test.de
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