SQL SERVER編寫存儲過程小工具

2020-07-27 13:31:16

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在開發數據庫系統的過程中，經常要寫很多的存儲過程。為了統一格式和簡化開發過程，我編寫一些存儲過程，用來自動生成存儲過程。下面就為您簡單介紹一下它們。其中一個用于生成Insert過程，另一個用于生成Update過程。

Sp_GenInsert

該過程運行后，它為給定的表生成一個完整的Insert過程。如果原來的表有標識列，您得將生成的過程中的SET IDNTITY_INSERT ON 語句手工刪除。

語法如下

sp_GenInsert < Table Name >,< Stored Procedure Name >

以northwind 數據庫為例

sp_GenInsert 'Employees', 'INS_Employees'

最后會生成一個Insert存儲過程。利用它，您可以作進一步的開發。

Sp_GenUpdate

它會為一個表生成update存儲過程。語法如下：

sp_GenUpdate < Table Name >,< Primary Key >,< Stored Procedure Name >

以northwind 數據庫為例

sp_GenUpdate 'Employees','EmployeeID','UPD_Employees'

運行后生成如下所示的存儲過程：

Create Procedure UPD_Employees

@EmployeeID int

@LastName nvarchar(40) ,

@FirstName nvarchar(20) ,

@Title nvarchar(60) ,

@TitleofCourtesy nvarchar(50) ,

@BirthDate datetime ,

@HireDate datetime ,

@Address nvarchar(120) ,

@City nvarchar(30) ,

@Region nvarchar(30) ,

@PostalCode nvarchar(20) ,

@Country nvarchar(30) ,

@HomePhone nvarchar(48) ,

@Extension nvarchar(8) ,

@Phote image ,

@Notes ntext ,

@ReportsTo int ,

@PhotoPath nvarchar(510)

AS

UPDATE Employees

SET

LastName = @LastName,

FirstName = @FirstName,

Title = @Title,

TitleofCourtesy = @TitleofCourtesy,

BirthDate = @BirthDate,

HireDate = @HireDate,

Address = @Address,

City = @City,

Regin = @Regin,

PostalCode = @PostCode,

Country = @Country,

HomePhone = @HomePhone,

Extension = @Extension,

Photo = @Photo

Notes = @Notes，

ReportsTo = @ReportsTo,

PhotoPath = @PhotoPath

WHERE EmployeeID = @EmployeeID

使用以上的兩個存儲過程，節省了我不少時間。特別是在改變了表結構后，重新構造各個存儲過程的過程中。您可以改寫這兩個程序，來自動生成別的存儲過程。

SQL Server編寫存儲過程小工具
以下是兩個存儲過程的源程序
/*===========================================================

語法: sp_GenInsert <Table Name>,<Stored Procedure Name>
以northwind 數據庫為例
sp_GenInsert 'Employees', 'INS_Employees'

注釋：如果您在Master系統數據庫中創建該過程，那您就可以在您服務器上所有的數據庫中使用該過程。

=============================================================*/

CREATE procedure sp_GenInsert
@TableName varchar(130),
@ProcedureName varchar(130)
as
set nocount on

declare @maxcol int,
@TableID int
--itlearner.com
set @TableID = object_id(@TableName)

select @MaxCol = max(colorder)
from syscolumns
where id = @TableID

select 'Create Procedure ' + rtrim(@ProcedureName) as type,0 as colorder into #TempProc
union
select convert(char(35),'@' + syscolumns.name)
+ rtrim(systypes.name)
+ case when rtrim(systypes.name) in ('binary','char','nchar','nvarchar','varbinary','varchar') then '(' + rtrim(convert(char(4),syscolumns.length)) + ')'
when rtrim(systypes.name) not in ('binary','char','nchar','nvarchar','varbinary','varchar') then ' '
end
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select 'AS',@maxcol + 1 as colorder
union
select 'INSERT INTO ' + @TableName,@maxcol + 2 as colorder
union
select '(',@maxcol + 3 as colorder
union
select syscolumns.name
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder + @maxcol + 3 as colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select ')',(2 * @maxcol) + 4 as colorder
union
select 'VALUES',(2 * @maxcol) + 5 as colorder
union
select '(',(2 * @maxcol) + 6 as colorder
union
select '@' + syscolumns.name
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder + (2 * @maxcol + 6) as colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select ')',(3 * @maxcol) + 7 as colorder
order by colorder

select type from #tempproc order by colorder

drop table #tempproc

SQL Server編寫存儲過程小工具
功能：為給定表創建Update存儲過程
語法： sp_GenUpdate <Table Name>,<Primary Key>,<Stored Procedure Name>
以northwind 數據庫為例
sp_GenUpdate 'Employees','EmployeeID','UPD_Employees'

注釋：如果您在Master系統數據庫中創建該過程，那您就可以在您服務器上所有的數據庫中使用該過程。

===========================================================*/
CREATE procedure sp_GenUpdate
@TableName varchar(130),
@PrimaryKey varchar(130),
@ProcedureName varchar(130)
as
set nocount on

declare @maxcol int,
@TableID int
--itlearner.com
set @TableID = object_id(@TableName)

select @MaxCol = max(colorder)
from syscolumns
where id = @TableID

select 'Create Procedure ' + rtrim(@ProcedureName) as type,0 as colorder into #TempProc
union
select convert(char(35),'@' + syscolumns.name)
+ rtrim(systypes.name)
+ case when rtrim(systypes.name) in ('binary','char','nchar','nvarchar','varbinary','varchar') then '(' + rtrim(convert(char(4),syscolumns.length)) + ')'
when rtrim(systypes.name) not in ('binary','char','nchar','nvarchar','varbinary','varchar') then ' '
end
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and systypes.name <> 'sysname'
union
select 'AS',@maxcol + 1 as colorder
union
select 'UPDATE ' + @TableName,@maxcol + 2 as colorder
union
select 'SET',@maxcol + 3 as colorder
union
select syscolumns.name + ' = @' + syscolumns.name
+ case when colorder < @maxcol then ','
when colorder = @maxcol then ' '
end
as type,
colorder + @maxcol + 3 as colorder
from syscolumns
join systypes on syscolumns.xtype = systypes.xtype
where id = @TableID and syscolumns.name <> @PrimaryKey and systypes.name <> 'sysname'
union
select 'WHERE ' + @PrimaryKey + ' = @' + @PrimaryKey,(2 * @maxcol) + 4 as colorder
order by colorder