国产探花免费观看_亚洲丰满少妇自慰呻吟_97日韩有码在线_资源在线日韩欧美_一区二区精品毛片,辰东完美世界有声小说,欢乐颂第一季,yy玄幻小说排行榜完本

首頁 > 數據庫 > MySQL > 正文

規范化的SQL數據修改語句總結

2020-01-18 23:56:19
字體:
來源:轉載
供稿:網友
1 增加字段
復制代碼 代碼如下:

IF NOT EXISTS (SELECT * FROM SYSCOLUMNS WHERE ID=OBJECT_ID('QueryDataSource') and name = 'IsCrossTable')
BEGIN
ALTER TABLE QueryDataSource ADD IsCrossTable bit default(0) --插入字段
END

2 存儲過程
復制代碼 代碼如下:

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[PLSystem_Insert]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[PLSystem_Insert]
go
CREATE PROCEDURE dbo.PLSystem_Insert
(
@PLSystemID smallint,
@PLSystemName varchar(20),
@PLSystemFlag char(2)
)
AS
INSERT INTO dbo.PLSystem
(
PLSystemID,
PLSystemName,
PLSystemFlag
)
VALUES
(
@PLSystemID,
@PLSystemName,
@PLSystemFlag
)
go

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[PLSystem_Delete]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[PLSystem_Delete]
go
CREATE PROCEDURE dbo.PLSystem_Delete
(
@PLSystemID smallint
)
AS
DELETE FROM dbo.PLSystem
WHERE
PLSystemID = @PLSystemID
go

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[PLSystem_Update]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[PLSystem_Update]
go
CREATE PROCEDURE dbo.PLSystem_Update
(
@PLSystemID smallint,
@PLSystemName varchar(20),
@PLSystemFlag char(2)
)
AS
UPDATE dbo.PLSystem SET
PLSystemName = @PLSystemName,
PLSystemFlag = @PLSystemFlag
WHERE
PLSystemID = @PLSystemID
go

3 創建表
復制代碼 代碼如下:

IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[PLSystem]') AND type in (N'U'))
DROP TABLE [dbo].[PLSystem]
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[PLSystem]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[PLSystem](
[PLSystemID] [tinyint] NOT NULL,
[PLSystemName] [varchar](20) NULL,
[PLSystemFlag] [char](2) NULL,
CONSTRAINT [XPKPLSystem] PRIMARY KEY CLUSTERED
(
[PLSystemID] ASC
)
) ON [PRIMARY]
END
GO

4 游標
復制代碼 代碼如下:

Begin
declare @PluserID varchar(8)
declare pluserCurse Cursor for select PLUserID from PLUser where PCancelJudge=0
open pluserCurse --打開游標
fetch next from pluserCurse into @PluserID
while @@FETCH_STATUS=0
begin
print (@PluserID)
insert into PLUserActorDepart(DepartID,PLActorSystemID,PLUserID)
select DepartmentID,PLSystemID,PLUserID from MSUserRight where MSUserRight.DepartmentID not in
(
select DepartmentID from PLDepartment where PLDepartment.DParent=(select DepartmentID from PLUser where PLUserID=@PluserID )
OR PLDepartment.DepartmentID=(select DepartmentID from PLUser where PLUserID =@PluserID)
) AND MSUserRight.PLUserID=@PluserID
fetch next from pluserCurse into @PluserID
end
close pluserCurse
deallocate pluserCurse
end

5 用while實現for循環
復制代碼 代碼如下:

Create Proc InsertSQL
AS
Begin
DECLARE @Count int
set @Count=0;
While(@Count<200000)
Begin
Print(@Count);
Insert into Student values('YOUNG','M',100,'FUJIANXIAMENT');
set @Count=@Count+1;
END
END
發表評論 共有條評論
用戶名: 密碼:
驗證碼: 匿名發表
主站蜘蛛池模板: 巩留县| 卓资县| 新野县| 玛多县| 原平市| 德保县| 海城市| 黄冈市| 宁武县| 宁蒗| 沙雅县| 郎溪县| 南康市| 吉林省| 新源县| 越西县| 蕲春县| 伽师县| 察隅县| 瑞金市| 合川市| 项城市| 沙雅县| 苗栗县| 马边| 清新县| 泸西县| 格尔木市| 元阳县| 米林县| 耒阳市| 和林格尔县| 朔州市| 长阳| 滦南县| 通海县| 金山区| 龙岩市| 云梦县| 杭锦旗| 讷河市|