drop table if exists t1;
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 concat('monty',' was here ','again'),length('hello'),char(ascii('h'));
concat('monty',' was here ','again')	length('hello')	char(ascii('h'))
monty was here again	5	h
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',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 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(' 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 md5('hello');
md5('hello')
5d41402abc4b2a76b9719d911017c592
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')
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 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
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
) TYPE=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,bugstatus,submitter), '"') FROM t1;
CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified,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,bugstatus,submitter) FROM t1;
CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified,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)) TYPE=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
) TYPE=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	1	1	n
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')