sql – 如何从数据库中删除所有内容(表,视图,存储过程,函数)？

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我想删除数据库,表,视图,存储过程和函数中的所有内容.我找到了一些链接,但它们不适用于复杂的数据库.它没有删除表.这是我在本网站上发现的脚本的自己版本并进行了调整. 
/* Drop all non-system stored procs */ 
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254)
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'P' AND category = 0 ORDER BY [name]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.procedures WHERE [name] = @name)

WHILE @name is not null 
BEGIN 
    SELECT @sql = 'DROP PROCEDURE [' + @schema + '].[' + 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])
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.procedures WHERE [name] = @name) 
END 
GO 

/* Drop all views */ 
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254)
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'V' AND category = 0 ORDER BY [name]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.views WHERE [name] = @name)

WHILE @name IS NOT NULL 
BEGIN 
    SELECT @sql = 'DROP VIEW [' + @schema + '].[' + 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]) 
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.views WHERE [name] = @name)
END 
GO 

/* Drop all Foreign Key constraints */ 
DECLARE @name VARCHAR(128) 
DECLARE @constraint VARCHAR(254) 
DECLARE @sql VARCHAR(254) 
DECLARE @schema VARCHAR(128)

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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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 AND CONSTRAINT_SCHEMA = @schema ORDER BY CONSTRAINT_NAME) 
    WHILE @constraint IS NOT NULL 
    BEGIN 
        SELECT @sql = 'ALTER TABLE [' + @schema + '].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint) +']' 
        --BEGIN TRY        
            EXEC (@sql)
            PRINT 'Dropped FK Constraint: ' + @constraint + ' on ' + @name
        --END TRY
        --BEGIN CATCH
        --  PRINT (@sql)
        --END CATCH
        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 AND CONSTRAINT_SCHEMA = @schema 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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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) 
DECLARE @schema VARCHAR(128)

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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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 AND CONSTRAINT_SCHEMA = @schema ORDER BY CONSTRAINT_NAME) 
    WHILE @constraint is not null 
    BEGIN 
        SELECT @sql = 'ALTER TABLE [' + @schema + '].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint)+']' 
        IF @sql LIKE '%PK_arrival_detail%' BEGIN PRINT @sql END
        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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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) 
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'U' AND category = 0 ORDER BY [name]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.tables WHERE [name] = @name)

WHILE @name IS NOT NULL 
BEGIN 
    SELECT @sql = 'DROP TABLE [' + @schema + '].[' + 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]) 
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.tables WHERE [name] = @name)
END 
GO 

/* Drop all functions */ 
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254) 
DECLARE @schema VARCHAR(128)

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]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.objects WHERE [name] = @name)

WHILE @name IS NOT NULL 
BEGIN 
    SELECT @sql = 'DROP FUNCTION [' + @schema + '].[' + RTRIM(@name) +']' 
    EXEC (@sql) 
    PRINT 'Dropped Function: ' + @name 
    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] IN (N'FN',N'FT') AND category = 0 AND [name] > @name ORDER BY [name]) 
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.objects WHERE [name] = @name)
END 
GO

问题仅出在丢弃约束和丢弃表上.对于与另一个表有关系的表,它总是失败.如何修复我的脚本以使其适用于更复杂的数据库？

解决方法

您提供的脚本几乎已完成.我已经在这里和那里调整了一些条件,以使其在复杂情况下更加稳健.此版本支持删除具有相同名称但不同架构的2个对象.我还添加了一个删除数据库触发器的部分,因为它可能会阻止您在某些情况下删除表.

我用AdventureWorks Databases和我自己的数据库测试了这个(有点非常复杂.)

/* Drop all non-system stored procs */ 
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254)
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'P' AND category = 0 ORDER BY [name]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.procedures WHERE [name] = @name)

WHILE @name is not null 
BEGIN 
    SELECT @sql = 'DROP PROCEDURE [' + @schema + '].[' + RTRIM(@name) +']' 
    --PRINT (@sql)
    EXEC (@sql) 
    PRINT 'Dropped Procedure: ' + @name 

    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'P' AND category = 0 ORDER BY [name])
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.procedures WHERE [name] = @name) 
END 
GO 

/* Drop all database triggers */
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254)

SELECT @name = (SELECT TOP 1 T.name FROM sys.triggers AS T WHERE T.parent_id = 0 /* database trigger */ ORDER BY [name])

WHILE @name is not null 
BEGIN 
    SELECT @sql = 'DROP TRIGGER [' + RTRIM(@name) +'] ON DATABASE' 
    EXEC (@sql) 
    PRINT 'Dropped TRIGGER: ' + @name 

    SELECT @name = (SELECT TOP 1 T.name FROM sys.triggers AS T WHERE T.parent_id = 0 /* database trigger */ AND [name] > @name ORDER BY [name])
END 
GO 

/* Drop all views */ 
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254)
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'V' AND category = 0 ORDER BY [name]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.views WHERE [name] = @name)

WHILE @name IS NOT NULL 
BEGIN 
    SELECT @sql = 'DROP VIEW [' + @schema + '].[' + 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]) 
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.views WHERE [name] = @name)
END 
GO 

/* Drop all Foreign Key constraints */ 
DECLARE @name VARCHAR(128) 
DECLARE @constraint VARCHAR(254) 
DECLARE @sql VARCHAR(254) 
DECLARE @schema VARCHAR(128)

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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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 AND CONSTRAINT_SCHEMA = @schema ORDER BY CONSTRAINT_NAME) 
    WHILE @constraint IS NOT NULL 
    BEGIN 
        SELECT @sql = 'ALTER TABLE [' + @schema + '].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint) +']' 
        BEGIN TRY
            EXEC (@sql)
            PRINT 'Dropped FK Constraint: ' + @constraint + ' on ' + @name
        END TRY
        BEGIN CATCH
            PRINT (@sql)
        END CATCH
        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 AND CONSTRAINT_SCHEMA = @schema 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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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) 
DECLARE @schema VARCHAR(128)

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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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 AND CONSTRAINT_SCHEMA = @schema ORDER BY CONSTRAINT_NAME) 
    WHILE @constraint is not null 
    BEGIN 
        SELECT @sql = 'ALTER TABLE [' + @schema + '].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint)+']' 
        --PRINT @sql
        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 AND CONSTRAINT_SCHEMA = @schema 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) 
SELECT @schema = (SELECT TOP 1 CONSTRAINT_SCHEMA 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) 
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'U' AND category = 0 ORDER BY [name]) 
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.tables WHERE [name] = @name)

WHILE @name IS NOT NULL 
BEGIN 
    SELECT @sql = 'DROP TABLE [' + @schema + '].[' + RTRIM(@name) +']' 
    EXEC (@sql) 
    PRINT 'Dropped Table: ' + @name 
    SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = 'U' AND category = 0 ORDER BY [name]) 
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.tables WHERE [name] = @name)
END 
GO 

/* Drop all functions */ 
DECLARE @name VARCHAR(128) 
DECLARE @sql VARCHAR(254) 
DECLARE @schema VARCHAR(128)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] IN (N'FN',N'FT') AND category = 0 AND [name] > @name ORDER BY [name]) 
    SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.objects WHERE [name] = @name)
END 
GO
原文链接：https://www.f2er.com/mssql/74770.html

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