SQLÐÐתÁдúÂë
1. SQLÐÐתÁдúÂë
-
-
±íÀïÃæÓÐÕâôһ×éÊý¾Ý:
code price
'MCU0-3' 15
'MCU0-3' 20
'MCU0-3' 22
'MCU3-15' 17
'MCU3-15' 16
'MCU3-15' -10
'MCU3-15' 50
'MCU3-27' 99
'MCU3-27' 96
'MCU3-27' 54
'MCU3-27' 14
'MCU3-27' 46
'MCU3-27' 86
ÏÖÔÚÐèÒªµÃµ½ÕâÑùµÄ½á¹û:
MCU0-3 MCU3-15 MCU3-27
15 17 99
20 16 96
22 -10 54
null 50 14
null null 46
null null 86
SQLÓï¾äÊÇÕâÑùдµÄ:
SELECT ID = IDENTITY(INT, 1, 1), price into #T1 from [table] where code = 'MCU0-3'
SELECT ID = IDENTITY(INT, 1, 1), price into #T2 from [table] where code = 'MCU3-15'
SELECT ID = IDENTITY(INT, 1, 1), price into #T3 from [table]
Ïà¹ØÎĵµ£º
¹¤×÷ÖÐÅöµ½µÄС¼¼ÇÉ£¬±ÈÈç˵ҪÓÃÊý¾Ý±íÀïÈ¡³ö×¢²áÓû§µÄ×ÊÁÏ£¬ÐÔ±ðΪ1ÔòÏÔʾΪÄÐÉú£»ÐÔ±ðΪ2ÔòÏÔʾΪŮÉú£»ÒÔǰ¶¼ÊÇ´Ó±íÀïÈ¡³öÊý¾Ý£¬È»ºóÔÙÓôúÂë½øÐÐÅжϣ¬Îª1ÔòÏÔʾΪÄÐÉú£»Îª2ÔòÏÔʾΪŮÉú£»Æäʵµ¥ÓÃSQLÓï¾ä¾Í¿ÉÒÔ×öµ½£¬ÈçÏ£º
Ö±½ÓʹÓÃcase when else Óï¾ä
Case¾ßÓÐÁ½ÖÖ¸ñʽ¡£¼òµ¥Caseº¯ÊýºÍCaseË ......
½ñÌìÔڵǼsql2005µÄʱºò£¬ÏëÓÃsaµÄÑéÖ¤·½Ê½µÇ¼£¬·¢ÏֵǼ²»ÁË£¬ÔÚÍøÉϲéÁËÏ£¬°´ÕÕÏÂÃæµÄ¾Í¿ÉÒÔ½â¾ö¡£Ö®Ç°ÔÚ×°sql2005µÄʱºò£¬ÊÇÉèÖóÉwindowsÑéÖ¤·½Ê½µÇ¼µÄ¡£
¾ßÌå½â¾ö·½°¸ÈçÏ£º
1. ¿ªÆôsql2005Ô¶³ÌÁ¬½Ó¹¦ÄÜ,¿ªÆô°ì·¨ÈçÏÂ,
ÅäÖù¤¾ß->sql serverÍâΧӦÓÃÅäÖÃÆ÷->·þÎñºÍÁ¬½ÓµÄ ......
ʹÓÃLINQ to SQL½¨Ä£NorthwindÊý¾Ý¿â
ÔÚÕâ֮ǰһÆðѧ¹ýLINQ to SQLÉè¼ÆÆ÷µÄʹÓã¬ÏÂÃæ¾ÍʹÓÃÈçϵÄÊý¾ÝÄ£ÐÍ£º
µ±Ê¹ÓÃLINQ to
SQLÉè¼ÆÆ÷Éè¼ÆÒÔÉ϶¨ÒåµÄÎå¸öÀࣨProduct£¬Category£¬Customer£¬OrderºÍOrderDetail£©µÄʱºò£¬Ã¿¸öÀàÖеÄÊôÐÔ
¶¼Ó³ÉäÁËÏàÓ¦Êý¾Ý¿âÖбíµÄÁУ¬Ã¿¸öÀàµÄʵÀýÔò´ú±íÁËÊý¾Ý¿â±íÖеÄÒ»Ìõ¼Ç¼¡£ÁíÍ⣬ ......
ʵÀý1£ºÖ»·µ»Øµ¥Ò»¼Ç¼¼¯µÄ´æ´¢¹ý³Ì¡£
ÒøÐдæ¿î±í£¨bankMoney£©µÄÄÚÈÝÈçÏÂ
Id
userID
Sex
Money
001
Zhangsan
ÄÐ
30
002
Wangwu
ÄÐ
50
003
Zhangsan
ÄÐ
40
ÒªÇó1£º²éѯ±íbankMoneyµÄÄÚÈݵĴ洢¹ý³Ì
create procedure sp_query_bankMoney
as
select * from bankMoney
go
exec sp_query_bankMoney
×¢ ......