sql ×Ö·ûËùÔÚλÖÃ
sqlÔõÑù¶¨Î»Ò»¸ö×Ö·ûËùÔÚµÄλÖÃ?
SQL Server: RTRIM( ), LTRIM( )¸÷ÖÖ trim º¯ÊýµÄÓï·¨ÈçÏ£ºTRIM ( [ [λÖÃ] [ÒªÒƳýµÄ×Ö´®] FROM ] ×Ö´®): [λÖÃ] µÄ...
sql ²éÕÒ×Ö¶ÎÖÐij×Ö·ûµÄλÖÃ
1¡¢´´½¨²âÊÔ±í£¬create table test_student(id number, remark varchar2(20));2¡¢²åÈë²âÊÔÊý¾Ý insert into t...
SQL ²éѯָ¶¨×Ö·û´®µÄλÖÃ
½áÂÛ£º¡°ÄãºÃ¡±Öеġ°Ä㡱µÄÆðʼλÖÃÊÇ5£¬ËùÒÔÕâÑù¾ÍÄÜÅжϳöÖ¸¶¨×Ö·ûµÄλÖÃÁË¡£
MS SQL ServerÓÐûÓвéÕÒ×Ö·û´®Î»Öõĺ¯Êý
sql ²éÕÒ×Ö·û´®Î»ÖÃʹÓà CHARINDEXº¯Êý¡£CHARINDEXº¯Êý£¬ÔÚÒ»¶Î×Ö·ûÖÐËÑË÷×Ö·û»òÕß×Ö·û´®¡£Óï·¨ CHARINDEX (...
SQL ÈçºÎ»ñÈ¡×Ö·û´®×îºóһλÊÇ"¡£"ºÅµÄλÖÃ
string1Ô´×Ö·û´®£¬ÒªÔÚ´Ë×Ö·û´®ÖвéÕÒ¡£string2ÒªÔÚstring1ÖвéÕÒµÄ×Ö·û´®.start_position ´ú±ístring1 µÄÄĸöλÖÿªÊ¼²éÕÒ¡£Ä¬ÈÏΪ...
sqlÔõô²éѯij¸ö×Ö·ûÔÚ×Ö·û´®ÖеÄλÖÃ
select CHARINDEX('²éѯ×Ö·û',²éѯ×Ö¶Î), * from ±í Èç
ÈçºÎÔÚsqlrÖÐÓÃCharindex·µ»Ø×Ö·û´®µÄλÖà - °Ù¶È¾Ñé
1 µã»÷¿ªÊ¼°´Å¥£¬Ñ¡Ôñ¡°sql server¹ÜÀíÆ÷¡±Ñ¡Ïî2 Ìîд¡°·þÎñÆ÷¡±Ãû³Æ£¬µã»÷¡°Á¬½Ó¡±°´Å¥ 3 µã»÷Êý¾Ý¿âÑ¡Ïî...
SQL»ñÈ¡×Ö·û´®×îºó³öÏÖµÄλÖÃ
Èý£®È磺'6.7.8.2.3.4.x'µÃµ½×îºóÒ»¸ö'.'ÔÚ×Ö·û´®µÄλÖãºdeclare @str3 varchar(50)set @str3='6.7.8.2.3.4.x...
sql ²éѯÓöººÅ·Ö¸ô×Ö·û´®ËùÔÚµÄλÖÃ,ÀýÈç:×Ö·û´® 5,4...
4,8,28,1'||',',1,(instr(','||' 5,4,8,28,1'||',',',8,'))),','))) as str_pos from tableName;
ÈçºÎÓÃSQLÓï¾ä²éѯ×Ö·ûËùÔÚµÄλÖÃÊǸÃ×Ö·û´®µÄµÚ¼¸¸ö...
sql@kokooa>select instr('101\02\03\04\05','01\',1,1) from dual;INSTR('101\02\03\04\05','01\',1,1)--- 2...