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

Ò»´Î²åÈë¶àÌõÐÅÏ¢(sql)

×¢ÊÍ:Ö»Êʺϵ¥±íµ¥ÁÐÊý¾Ý,
create database test
go
use test
go
create table users
(
:id int identity(1,1) primary key not null,
:name nvarchar(20)
)
go
create proc sp_Inserts
@Names nvarchar(4000)
as
declare @Name nvarchar(20),@ErrorSum int
:set @ErrorSum = 0
:begin tran
:while(len(@Names)>0)
:begin
::if(charindex(',',@Names)<>len(@Names))
::begin
:::set @Name = substring(@Names,0,charindex(',',@Names))
:::insert into users(name) values(@Name)
:::set @ErrorSum = @ErrorSum + @@error
:::set @Names = substring(@Names,(charindex(',',@Names)+1),(len(@Names)-(charindex(',',@Names))))
::end
::else
::begin
:::set @Name = substring(@Names,0,charindex(',',@Names))
:::insert into users(name) values(@Name)
:::set @ErrorSum = @ErrorSum + @@error
:::set @Names = ''
::end
:end:
:if(@ErrorSum<>0)
::rollback tran
:else
::commit tran
go
sp_Inserts 'Tom,Jack,Bob,'


Ïà¹ØÎĵµ£º

oracle sqlÓï¾äÓÅ»¯»ù´¡

¾¡Á¿ÉÙÓÃIN²Ù×÷·û£¬»ù±¾ÉÏËùÓеÄIN²Ù×÷·û¶¼¿ÉÒÔÓÃEXISTS´úÌæ¡£
²»ÓÃNOT IN²Ù×÷·û£¬¿ÉÒÔÓÃNOT EXISTS»òÕßÍâÁ¬½Ó+Ìæ´ú¡£
OracleÔÚÖ´ÐÐIN×Ó²éѯʱ£¬Ê×ÏÈÖ´ÐÐ×Ó²éѯ£¬½«²éѯ½á¹û·ÅÈëÁÙʱ±íÔÙÖ´ÐÐÖ÷²éѯ¡£¶øEXISTÔòÊÇÊ×Ïȼì²éÖ÷²éѯ£¬È»ºóÔËÐÐ×Ó²éѯֱµ½ÕÒµ½µÚÒ»¸öÆ¥ÅäÏî¡£NOT EXISTS±ÈNOT INЧÂÊÉԸߡ£µ«¾ßÌåÔÚÑ¡ÔñIN»òEXIST² ......

sql²éѯÁ·Ï°

Àý 34  ÕÒ³öÄêÁ䳬¹ýƽ¾ùÄêÁäµÄѧÉúÐÕÃû¡£
SELECT SNAME
from STUDENTS
WHERE AGE £¾
      (SELECT  AVG(AGE)
        from   STUDENTS)
Àý 35  ÕÒ³ö¸÷¿Î³ÌµÄƽ¾ù³É¼¨£¬°´¿Î³ÌºÅ·Ö×飬ÇÒֻѡÔñѧÉú³¬¹ý 3 ÈËµÄ¿Î³ÌµÄ³É ......

.NETѧϰÊÖ¼ÇÖ®£ºlinq to SQL(¶þ)


ÔÚVisual Studio 2008 ÖÐʹÓÃO/RÉè¼ÆÆ÷£º
µãÌí¼ÓÏîÄ¿£¬Ñ¡Ôñ´´½¨Linq to SQLÏîÄ¿£¬Ê¹Ó÷þÎñÆ÷×ÊÔ´¹ÜÀíÆ÷Á¬½ÓNorthwindÊý¾Ý¿â£¬½«CustomersºÍOrdersÁ½¸ö±íÍϵ½Éè¼Æ½çÃæÉÏ£¬ÏµÍ³»á×Ô¶¯´´½¨app.configºÍNorthwid.designer.cs,ǰÕßÊÇÅäÖÃÁ¬½ÓÊý¾Ý¿âµÄÁ¬½Ó×Ö´®£»ºóÕß»áÉú³ÉÒ»¸ö¼Ì³Ð×ÔDataContextµÄÀࣺNorthwindDataContext¡£ ......

SQL×¢Èë

SQL×¢Èë¹¥»÷
¡¡¡¡SQL×¢Èë¹¥»÷ÊǺڿͶÔÊý¾Ý¿â½øÐй¥»÷µÄ³£ÓÃÊÖ¶ÎÖ®Ò»¡£Ëæ×ÅB/SģʽӦÓÿª·¢µÄ·¢Õ¹£¬Ê¹ÓÃÕâÖÖģʽ±àдӦÓóÌÐòµÄ³ÌÐòÔ±Ò²Ô½À´Ô½¶à¡£µ«ÊÇÓÉÓÚ³ÌÐòÔ±µÄˮƽ¼°¾­ÑéÒ²²Î²î²»Æë£¬Ï൱´óÒ»²¿·Ö³ÌÐòÔ±ÔÚ±àд´úÂëµÄʱºò£¬Ã»ÓжÔÓû§ÊäÈëÊý¾ÝµÄºÏ·¨ÐÔ½øÐÐÅжϣ¬Ê¹Ó¦ÓóÌÐò´æÔÚ°²È«Òþ»¼¡£Óû§¿ÉÒÔÌá½»Ò»¶ÎÊý¾Ý¿â²éѯ´ú ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ