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

SQL·ÖÒ³²éѯ

thunder:
1.MYSQLʵÏÖ
mysql> select * from user;
+----+----------+----------+-----------------+
| ID | username | password | email           |
+----+----------+----------+-----------------+
|  1 | admin    | admin    | abc@yahoo.cn    |
|  2 | thomas   | 159753   | thomas@yahoo.cn |
|  3 | thomas1  | 159753   | thomas@yahoo.cn |
|  4 | huhu     | 159753   | hu@yahoo.cn     |
|  5 | fdg      | dfg      | fdg             |
|  6 | sdf      | sd       | sdf@yahoo.cn    |
|  7 | d        | d        | d@d.cn          |
+----+----------+----------+-----------------+
7 rows in set (0.00 sec)
mysql> select * from user limit 3,2;
+----+----------+----------+-------------+
| ID | username | password | email       |
+----+----------+----------+-------------+
|  4 | huhu     | 159753   | hu@yahoo.cn |
|  5 | fdg      | dfg      | fdg         |
+----+----------+----------+-------------+
2 rows in set (0.00 sec)
mysql>
===================================================
2.MSSQLServerʵÏÖ
select top 5 function_id,function_name from d_function
where function_id not in (select top 5 function_id from d_function)
6 ÔÂͳ¼Æ
7 ²¿ÃŲéѯ
8 ¹«Ë¾²éѯ
9 ¹¤³ÌÕбê
10 ¹¤³Ì×ܽá


Ïà¹ØÎĵµ£º

sql checkÔ¼Êø

CHECK Ô¼Êø(CHECK Ô¼Êø:¶¨ÒåÁÐÖпɽÓÊܵÄÊý¾ÝÖµ¡£¿ÉÒÔ½« CHECK Ô¼ÊøÓ¦ÓÃÓÚ¶à¸öÁУ¬Ò²¿ÉÒÔ½«¶à¸ö CHECK Ô¼ÊøÓ¦ÓÃÓÚµ¥¸öÁС£µ±³ýȥij¸ö±íʱ£¬Ò²½«³ýÈ¥ CHECK Ô¼Êø¡£)Ö¸¶¨¿ÉÓɱíÖÐÒ»Áлò¶àÁнÓÊܵÄÊý¾ÝÖµ»ò¸ñʽ¡£ÀýÈ磬¿ÉÒÔÒªÇó authors ±íµÄ zip ÁÐÖ»ÔÊÐíÊäÈëÎåλÊýµÄÊý×ÖÏî¡£
¡¡¡¡
¡¡¡¡¿ÉÒÔΪһ¸ö±í¶¨ÒåÐí¶à CHECK Ô¼Êø¡£¿ ......

sqlÓï¾äÓÅ»¯3


 
µÍЧ: (Ë÷ÒýʧЧ)
SELECT … from DEPARTMENT WHERE DEPT_CODE IS NOT NULL;
¸ßЧ: (Ë÷ÒýÓÐЧ)
SELECT … from DEPARTMENT WHERE DEPT_CODE >=0;
£¨27£©×ÜÊÇʹÓÃË÷ÒýµÄµÚÒ»¸öÁУº
Èç¹ûË÷ÒýÊǽ¨Á¢ÔÚ¶à ......

¶Á¡¶SQL Server 2005¸ß¼¶¹ÜÀí¡·µÄһЩժҪ... Á¬ÔØ5

ÔÚT-SQLÖмàÊÓ½ø³Ì
DBA¸üÔ¸ÒâʹÓÃT-SQLµÄÔ­ÒòÊÇ¿ÉÒԱȓ»î¶¯¼àÊÓÆ÷”¸ü¼ÓÁé»îµØ»ñµÃÐÅÏ¢¡£
1.       sp_whoºÍsp_who2
´æ´¢¹ý³Ìsp_whoÒ²·µ»Øµ±Ç°Á¬½ÓÊý¾Ý¿âʵÀý£¬Ó듻¼àÊÓÆ÷”·Ç³£ÀàËÆ¡£È»¶ø£¬Óû§¿ÉÄÜ·¢ÏÖ×Ô¼º¸üÔ¸ÒâʹÓÃδ¹«¿ªËµÃ÷µÄsp_who2´æ´¢¹ý³Ì£¬ÒòΪËüÌṩ ......

EXCELÊý¾Ýµ¼ÈëSQL µÄÁíÀàÓ÷¨

×ö¿ª·¢¹ý³ÌÖУ¬¾­³£»áÓõ½½«ExcelÖÐÊý¾Ýµ¼³öµ½SQL ServerÖеÄÇé¿ö£¬Äã¿ÉÒÔÀûÓÃSQL SERVER ÖÐ×Ô´øµÄµ¼ÈëÊý¾ÝµÄ·½Ê½£¬µ«ÕâÖÖ·½Ê½£¬ÓÐʱ»á·¢ÏÖÊý¾Ýµ¼Èëºó£¬¿ÉÄÜΪ¿Õ£¬¿ÉÄÜ¿ªÍ·ÉÙ¸öÁ㣬´ËÖÖÇé¿ö¶à³öÏÖÓÚÊýÖµÐ͵ÄÁУ¬½ñÌìÔÚCSDNÉÏÏй䣬ż¶û·¢ÏÖÁËÒ»¸öÌû×Ó£¬½éÉܵÄÒÔÏÂÕâÖÖ·½·¨£¬±¾ÈËÇ¡ÆßÒò×î½ü¹«Ë¾×¼±¸ÉÏÊУ¬É󼯾ÖÔÚ×öÉ󼯣¬¼¼ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ