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  • T-SQL 删除数据库所有的对象

    Is there any way in which I can clean a database in SQl Server 2005 by dropping all the tables and deleting stored procedures, triggers, constraints and all the dependencies in one SQL statement?

    REASON FOR REQUEST:

    I want to have a DB script for cleaning up an existing DB which is not in use rather than creating new ones, especially when you have to put in a request to your DB admin and wait for a while to get it done!

    /* Drop all non-system stored procs */
    DECLARE @name VARCHAR(128)
    DECLARE @SQL VARCHAR(254)
    
    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'P' AND category = 0 ORDER BY [name])
    
    WHILE @name is not null
    BEGIN
        SELECT @SQL = 'DROP PROCEDURE [dbo].[' + RTRIM(@name) +']'
        EXEC (@SQL)
        PRINT 'Dropped Procedure: ' + @name
        SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'P' AND category = 0 AND [name] > @name ORDER 
    BY [name])
    END
    
    GO
    
    /* Drop all views */
    
    DECLARE @name VARCHAR(128)
    DECLARE @SQL VARCHAR(254)
    
    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'V' AND category = 0 ORDER BY [name])
    
    WHILE @name IS NOT NULL
    
    BEGIN
    
        SELECT @SQL = 'DROP VIEW [dbo].[' + RTRIM(@name) +']'
    
        EXEC (@SQL)
    
        PRINT 'Dropped View: ' + @name
    
        SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'V' AND category = 0 AND [name] > @name ORDER BY [name])
    
    END
    
    GO
    
    /* Drop all functions */
    
    DECLARE @name VARCHAR(128)
    
    DECLARE @SQL VARCHAR(254)
    
    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] IN (N'FN', N'IF', N'TF', N'FS', N'FT') AND category = 0 ORDER BY [name])
    
    WHILE @name IS NOT NULL
    
    BEGIN
    
        SELECT @SQL = 'DROP FUNCTION [dbo].[' + RTRIM(@name) +']'
    
        EXEC (@SQL)
    
        PRINT 'Dropped Function: ' + @name
    
        SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] IN (N'FN', N'IF', N'TF', N'FS', N'FT') AND category = 0 AND [name] > @name ORDER BY [name])
    
    END
    
    GO
    
    /* Drop all Foreign Key constraints */
    
    DECLARE @name VARCHAR(128)
    
    DECLARE @constraint VARCHAR(254)
    
    DECLARE @SQL VARCHAR(254)
    
    SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'FOREIGN KEY' ORDER BY TABLE_NAME)
    
    WHILE @name is not null
    
    BEGIN
    
        SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'FOREIGN KEY' AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
    
        WHILE @constraint IS NOT NULL
    
        BEGIN
    
            SELECT @SQL = 'ALTER TABLE [dbo].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint) +']'
    
            EXEC (@SQL)
    
            PRINT 'Dropped FK Constraint: ' + @constraint + ' on ' + @name
    
            SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'FOREIGN KEY' AND CONSTRAINT_NAME <> @constraint AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
    
        END
    
    SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'FOREIGN KEY' ORDER BY TABLE_NAME)
    
    END
    
    GO
    
    /* Drop all Primary Key constraints */
    
    DECLARE @name VARCHAR(128)
    
    DECLARE @constraint VARCHAR(254)
    
    DECLARE @SQL VARCHAR(254)
    
    SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'PRIMARY KEY' ORDER BY TABLE_NAME)
    
    WHILE @name IS NOT NULL
    
    BEGIN
    
        SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'PRIMARY KEY' AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
    
        WHILE @constraint is not null
    
        BEGIN
    
            SELECT @SQL = 'ALTER TABLE [dbo].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint)+']'
    
            EXEC (@SQL)
    
            PRINT 'Dropped PK Constraint: ' + @constraint + ' on ' + @name
    
            SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'PRIMARY KEY' AND CONSTRAINT_NAME <> @constraint AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
    
        END
    
    SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = 'PRIMARY KEY' ORDER BY TABLE_NAME)
    
    END
    
    GO
    
    /* Drop all tables */
    
    DECLARE @name VARCHAR(128)
    
    DECLARE @SQL VARCHAR(254)
    
    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'U' AND category = 0 ORDER BY [name])
    
    WHILE @name IS NOT NULL
    
    BEGIN
    
        SELECT @SQL = 'DROP TABLE [dbo].[' + RTRIM(@name) +']'
    
        EXEC (@SQL)
    
        PRINT 'Dropped Table: ' + @name
    
        SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'U' AND category = 0 AND [name] > @name ORDER BY [name])
    
    END
    
    GO
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  • 原文地址:https://www.cnblogs.com/bi-info/p/6222688.html
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