动态为表添加字段

下面这篇《动态为表添加存储时间字段https://www.cnblogs.com/insus/p/10943614.html

添加字段,只能添加时间类型的字段。想把这个方法改良一下,尽量能做到通用。

 

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO


-- =============================================
-- Author:      Insus.NET
-- Blog:        https://insus.cnblogs.com
-- Create date: 2019-05-29
-- Update date: 2019-05-29
-- Description: 动态为表添加字段
-- =============================================
CREATE PROCEDURE [dbo].[usp_DyanmicallyAddColumn]
(
    @TABLE_CATALOG SYSNAME,
    @TABLE_SCHEMA SYSNAME,
    @TABLE_NAME SYSNAME,    
    @COLUMN_NAME SYSNAME,
    @DATATYPE SYSNAME
)
AS
BEGIN
    IF NOT EXISTS(SELECT TOP 1 1 FROM [tempdb].[sys].[columns] WHERE object_id = object_id(@TABLE_CATALOG + N'.'+ @TABLE_SCHEMA + N'.' + @TABLE_NAME) AND [name] = @COLUMN_NAME)
    OR NOT EXISTS(SELECT TOP 1 1 FROM [sys].[columns] WHERE object_id = object_id(@TABLE_CATALOG + N'.'+ @TABLE_SCHEMA + N'.' + @TABLE_NAME) AND [name] = @COLUMN_NAME)    
        EXECUTE('ALTER TABLE '+ @TABLE_NAME +' ADD '+ @COLUMN_NAME +' ' + @DATATYPE +'')
END
GO
Source Code

 

举例使用:

 

posted @ 2019-05-29 16:58 Insus.NET 阅读(...) 评论(...) 编辑 收藏