[英]How to delete everything from a database (tables, views, stored procedures, functions)?
I want to drop everything in the database, tables, views, stored procedures, and functions.我想删除数据库、表、视图、存储过程和函数中的所有内容。 I found some link but they don't work on complex database.
我找到了一些链接,但它们不适用于复杂的数据库。 It failed to drop tables.
删除表失败。 This is my own version of the script that I found on this website and tweak it.
这是我在本网站上找到并调整的脚本的我自己的版本。
/* 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'IF', N'TF', N'FS', 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
The problem is only on the drop constraints and drop tables.问题仅在于删除约束和删除表。 It always failed with tables that have relationship to another table.
对于与另一个表有关系的表,它总是失败。 How can I fix my script to make it works on more complex database?
如何修复我的脚本以使其适用于更复杂的数据库?
The script you provided is almost completed.您提供的脚本已基本完成。 I have adjust a few where condition here and there to make it more robust in complex case.
我在这里和那里调整了一些 where 条件,以使其在复杂的情况下更加健壮。 This version is support delete 2 objects that have same name but difference schema.
此版本支持删除 2 个名称相同但架构不同的对象。 I also added a section to drop database trigger because it might prevent you to delete tables in some cases.
我还添加了一个部分来删除数据库触发器,因为它可能会阻止您在某些情况下删除表。
I have tested this with AdventureWorks Databases and my own database (which somewhat very complex.)我已经使用AdventureWorks 数据库和我自己的数据库(有些非常复杂)对此进行了测试。
/* 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'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'IF', N'TF', N'FS', 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
/* Drop all types */
DECLARE @name VARCHAR(128)
DECLARE @SQL VARCHAR(254)
DECLARE @schema VARCHAR(128)
SELECT @name = (SELECT TOP 1 [name] FROM sys.types WHERE is_user_defined = 1 ORDER BY [name])
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.types WHERE [name] = @name)
WHILE @name IS NOT NULL
BEGIN
SELECT @SQL = 'DROP TYPE [' + @schema + '].[' + RTRIM(@name) +']'
EXEC (@SQL)
PRINT 'Dropped type: ' + @name
SELECT @name = (SELECT TOP 1 [name] FROM sys.types WHERE is_user_defined = 1 AND [name] > @name ORDER BY [name])
SELECT @schema = (SELECT TOP 1 schema_name(schema_id) FROM sys.types WHERE [name] = @name)
END
GO
Please refer these links: Drop All Objects in a SQL Server Database请参考这些链接: 删除 SQL Server 数据库中的所有对象
I would normally suggest the same approach as the other answer, but since that doesn't seem to be working for you, here's a whole different angle on it...我通常会建议与其他答案相同的方法,但由于这似乎对您不起作用,因此这里有一个完全不同的角度......
Generating the drop statements in the right order to get around the constraints is complex, but fortunately there's a whole niche market for schema modification tools to figure it out for you.以正确的顺序生成 drop 语句来绕过约束是很复杂的,但幸运的是,有一个完整的模式修改工具的利基市场可以为您解决这个问题。 Here's one approach that worked for me:
这是一种对我有用的方法:
Again, not saying Red Gate is the only tool for it.再说一次,并不是说 Red Gate 是它的唯一工具。 Other vendors claim similar features, it's just that Red Gate is the one I use.
其他供应商声称具有类似的功能,只是我使用的是 Red Gate。 Note also they have an SDK if you're trying to embed this in some larger process or script.
另请注意,如果您尝试将其嵌入到一些更大的进程或脚本中,他们有一个SDK 。
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