常用SQL

 1 --选出相同行
 2 SELECT *
 3 FROM I_KHXXGZSJWH a
 4 WHERE ( ( SELECT COUNT(*)
 5 FROM I_KHXXGZSJWH
 6 WHERE KEHBM = a.KEHBM
 7 ) > 1 )
 8 ORDER BY KEHBM DESC
 9 
10 
11 --选出某列 求和
12 SELECT SUM(LJKPJE) from I_KPXX WHERE WBSYS='S-201401012.A';
13 
14 
15 --删除流程脚本
16 begin
17 use H3Cloud
18 delete from OT_InstanceContext
19 delete from OT_Token
20 delete from OT_WorkItem
21 delete from OT_Attachment
22 DELETE FROM [dbo].[I_电脑信息更新后子表]
23 DELETE FROM [dbo].[I_电脑信息更新前子表]
24 DELETE FROM [dbo].[I_机房硬件更新后子表]
25 DELETE FROM [dbo].[I_机房硬件更新前子表]
26 DELETE FROM [dbo].[I_加班备案记录_GROUP1]
28 end
30 begin
31 use H3
32 delete from dbo.ActivityMap
33 end

 --查询表objectID字段的最大值+1作为ObjectID字段输出
 SELECT MAX(convert(INT,ObjectID))+1 AS ObjectID FROM I_KHXXGZSJWH