MySQL数据库

开发平台：
Visual C++

func_str.result：源码内容
							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
hellomonty
length('ntrb_%\')
10
concat('monty',' was here ','again')	length('hello')	char(ascii('h'))
monty was here again	5	h
locate('he','hello')	locate('he','hello',2)	locate('lo','hello',2)
1	0	4
instr('hello','he')
1
position('ll' in 'hello')	position('a' in 'hello')
3	0
left('hello',2)	right('hello',2)	substring('hello',2,2)	mid('hello',1,5)
he	lo	el	hello
concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1))
happy
substring_index('www.tcx.se','.',-2)	substring_index('www.tcx.se','.',1)
tcx.se	www
substring_index('www.tcx.se','tcx',1)	substring_index('www.tcx.se','tcx',-1)
www.	.se
substring_index('.tcx.se','.',-2)	substring_index('.tcx.se','.tcx',-1)
tcx.se	.se
concat(':',ltrim('  left  '),':',rtrim('  right  '),':')
:left  :  right:
concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
:left: right:
concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':')
:m:y:s:
concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':')
:my:sql:
concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':')
:my:sql:
TRIM("foo" FROM "foo")	TRIM("foo" FROM "foook")	TRIM("foo" FROM "okfoo")
	ok	ok
insert('txs',2,1,'hi')	insert('is ',4,0,'a')	insert('txxxxt',2,4,'es')
this	is a	test
replace('aaaa','a','b')	replace('aaaa','aa','b')	replace('aaaa','a','bb')	replace('aaaa','','b')	replace('bbbb','a','c')
bbbb	bb	bbbbbbbb	aaaa	bbbb
replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL')
this is a REAL test
soundex('')	soundex('he')	soundex('hello all folks')
	H000	H4142
password('test')	length(encrypt('test'))	encrypt('test','aa')
378b243e220ca493	13	aaqPiZY5xR5l.
md5('hello')
5d41402abc4b2a76b9719d911017c592
repeat('monty',5)	concat('*',space(5),'*')
montymontymontymontymonty	*     *
reverse('abc')	reverse('abcd')
cba	dcba
rpad('a',4,'1')	rpad('a',4,'12')	rpad('abcd',3,'12')
a111	a121	abc
lpad('a',4,'1')	lpad('a',4,'12')	lpad('abcd',3,'12')
111a	121a	abc
rpad(741653838,17,'0')	lpad(741653838,17,'0')
74165383800000000	00000000741653838
rpad('abcd',7,'ab')	lpad('abcd',7,'ab')
abcdaba	abaabcd
rpad('abcd',1,'ab')	lpad('abcd',1,'ab')
a	a
LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')	GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')
HAROLD	HARRY
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
decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000)
1
decode(encode("abcdef","monty"),"monty")="abcdef"
1
reverse("")
insert("aa",100,1,"b")	insert("aa",1,3,"b")	left("aa",-1)	substring("a",1,2)
aa	b		a
elt(2,1)	field(NULL,"a","b","c")	reverse("")
NULL	0	
locate("a","b",2)	locate("","a",1)
0	1
ltrim("a")	rtrim("a")	trim(BOTH "" from "a")	trim(BOTH " " from "a")
a	a	a	a
concat("1","2")|0	concat("1",".5")+0.0
12	1.5
substring_index("www.tcx.se","",3)
length(repeat("a",100000000))	length(repeat("a",1000*64))
NULL	64000
position("0" in "baaa" in (1))	position("0" in "1" in (1,2,3))	position("sql" in ("mysql"))
1	0	3
position(("1" in (1,2,3)) in "01")
2
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
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
domain
hello.de
domain
test.de

						