func_str.test
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:4k
- # Version: 3.23.29
- #
- # Description
- # -----------
- # Testing string functions
- select 'hello',"'hello'",'""hello""','''h''e''l''l''o''',"hel""lo",'hel'lo';
- select 'hello' 'monty';
- select length('ntrb _%\');
- select concat('monty',' was here ','again'),length('hello'),char(ascii('h'));
- select locate('he','hello'),locate('he','hello',2),locate('lo','hello',2) ;
- select instr('hello','he');
- select position('ll' in 'hello'),position('a' in 'hello');
- select left('hello',2),right('hello',2),substring('hello',2,2),mid('hello',1,5) ;
- select concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1)) ;
- select substring_index('www.tcx.se','.',-2),substring_index('www.tcx.se','.',1);
- select substring_index('www.tcx.se','tcx',1),substring_index('www.tcx.se','tcx',-1);
- select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
- select concat(':',ltrim(' left '),':',rtrim(' right '),':');
- select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
- select concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':');
- select concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':');
- select concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':');
- select TRIM("foo" FROM "foo"), TRIM("foo" FROM "foook"), TRIM("foo" FROM "okfoo");
- select insert('txs',2,1,'hi'),insert('is ',4,0,'a'),insert('txxxxt',2,4,'es');
- select replace('aaaa','a','b'),replace('aaaa','aa','b'),replace('aaaa','a','bb'),replace('aaaa','','b'),replace('bbbb','a','c');
- select replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL') ;
- select soundex(''),soundex('he'),soundex('hello all folks');
- select password('test'),length(encrypt('test')),encrypt('test','aa');
- select md5('hello');
- select repeat('monty',5),concat('*',space(5),'*');
- select reverse('abc'),reverse('abcd');
- select rpad('a',4,'1'),rpad('a',4,'12'),rpad('abcd',3,'12');
- select lpad('a',4,'1'),lpad('a',4,'12'),lpad('abcd',3,'12');
- select rpad(741653838,17,'0'),lpad(741653838,17,'0');
- select rpad('abcd',7,'ab'),lpad('abcd',7,'ab');
- select rpad('abcd',1,'ab'),lpad('abcd',1,'ab');
- select LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD'),GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD');
- 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");
- select decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000);
- select decode(encode("abcdef","monty"),"monty")="abcdef";
- #
- # Wrong usage of functions
- #
- select reverse("");
- select insert("aa",100,1,"b"),insert("aa",1,3,"b"),left("aa",-1),substring("a",1,2);
- select elt(2,1),field(NULL,"a","b","c"),reverse("");
- select locate("a","b",2),locate("","a",1);
- select ltrim("a"),rtrim("a"),trim(BOTH "" from "a"),trim(BOTH " " from "a");
- select concat("1","2")|0,concat("1",".5")+0.0;
- select substring_index("www.tcx.se","",3);
- select length(repeat("a",100000000)),length(repeat("a",1000*64));
- select position("0" in "baaa" in (1)),position("0" in "1" in (1,2,3)),position("sql" in ("mysql"));
- select position(("1" in (1,2,3)) in "01");
- 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)));
- 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)));
- #
- # Problem med concat
- #
- 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';
- select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@test.de';
- drop table t1;