Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

²éÑ¯ÖØ¸´¼Ç¼µÄSQLÓï¾ä

SELECT tagid, tagname from uchome_mtag WHERE tagname IN (SELECT tagname from uchome_mtag GROUP BY tagname HAVING (COUNT(tagname) > 1)) ORDER BY tagname


Ïà¹ØÎĵµ£º

Ò»ÖÖ²»´íµÄ´ÓSQLתMysqlÊý¾Ý¿âµÄ·½·¨

Äê³õµÄʱºòÒ»Ö±ÔÚ×öÒ»¸öÍøÕ¾MSSQL2000->MySQL5µÄÇ¨ÒÆ¹¤×÷£¬ÒòΪ²ÉÓÃÁ˲»Í¬µÄ³ÌÐòϵͳ£¬ËùÒÔÖ÷ÒªÎÊÌâÔÚÊý¾ÝµÄÇ¨ÒÆ¡£ÓÉÓÚ2¸öϵͳÊý¾Ý¿â½á¹¹²îÒì·Ç³£´ó£¬²»·½±ã²ÉÈ¡SQLSERVERÀïµ¼ÈëMYSQLµÄODBCÊý¾ÝÔ´µÄ¹¦ÄÜ£¨Ò²²»ÍƼöÕâô×ö£¬×Ö¶ÎÀàÐ͵Ȳ»Í¬µã»á¸ãËÀÈ˵ġ«£©£¬Òò´Ë¾ÍÔÚWINDOWSÏÂ×Ô¼ºÐ´PHP½Å±¾´ÓSQLSERVERÀï¶ÁÊý¾Ý£¬È»ºó°´ÕÕ ......

SQL Char ¡¢VarCharºÍNVarCharµÄÇø±ð

char¡¢varchar¡¢textºÍnchar¡¢nvarchar¡¢ntext  
     
charºÍvarcharµÄ³¤¶È¶¼ÔÚ1µ½8000Ö®¼ä£¬ËüÃǵÄÇø±ðÔÚÓÚcharÊǶ¨³¤×Ö·ûÊý¾Ý£¬¶øvarcharÊDZ䳤×Ö·ûÊý¾Ý¡£Ëùν¶¨³¤¾ÍÊdz¤¶È¹Ì¶¨
µÄ£¬µ±ÊäÈëµÄÊý¾Ý³¤¶ÈûÓдﵽָ¶¨µÄ³¤¶Èʱ½«×Ô¶¯ÒÔÓ¢ÎĿոñÔÚÆäºóÃæÌî³ä£¬Ê¹³¤¶È´ïµ½ÏàÓ¦µÄ³¤¶È£»¶ø±ä ......

SQL Server 2005µÄ°æ±¾

¡¶SQL Sever 2005 Êý¾Ý¿â»ù´¡¼°Ó¦Óü¼Êõ½Ì³ÌÓëʵѵ ¡·  ÖÜÆæ
SQL Server 2005µÄ°æ±¾£º
1.       SQL Server 2005 Enterprise Edition ÆóÒµ°æ(32λºÍ64λ)
ÊÊÓÃÓÚ³¬´óÐÍÆóÒµ¡£Enterprise Edition ÊÇ×îÈ«ÃæµÄSQL Server°æ±¾£¬Êdz¬´óÐÍÆóÒµµÄÀíÏëÑ¡Ôñ£¬Äܹ»Âú×ã×ÔÓµÄÒªÇ󡣸ð汾»¹Í ......

sqlÁÐÏà¼ÓºÏ²¢ ÐÄÓêÖ®¼Ò

--1. ´´½¨±í£¬Ìí¼Ó²âÊÔÊý¾Ý
CREATE TABLE tb(id int, [value] varchar(10))
INSERT tb SELECT 1, 'aa'
UNION ALL SELECT 1, 'bb'
UNION ALL SELECT 2, 'aaa'
UNION ALL SELECT 2, 'bbb'
UNION ALL SELECT 2, 'ccc'
--SELECT * from tb
/**//*
id value
----------- ----------
1 aa
1 ......

SQL Server 2005 Express µ¼Èë/µ¼³öÊý¾Ý(ת)


SQL Server 2005 Express µ¼Èë/µ¼³öÊý¾Ý
°²×°ºÃSQL Server 2005 Expressºó£¬ÔÙ°²×°
http://download.microsoft.com/download/1/1/0/110d908f-c445-4523-b939-220c7d135f3d/SQLServer2005_SSMSEE.msi
¾Í¿ÉÒÔʹÓÿØÖÆÌ¨½øÐÐÊý¾Ý¿âµÄ¹ÜÀí¡£
µ«SQL Server Management Studio Express ²¢Ã»Óе¼Èë/µ¼³öÊý¾ÝµÄ¹¦ÄÜ£¬ÎÒÃÇ¿ÉÒÔ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ