Добрый день, уважаемые читатели. Сегодня я хочу поделится с вами полезным скриптом, который я использую каждый день.
Данный скрипт позволяет полностью очищать mssql базу данных от таблиц, хранимых процедур, вьюх и внешних ключей. В общем, после работы скрипта база данных выглядит так, как будто её только что создали.
Имя автора скрипта я, к сожалению, не знаю. Нашёл скрипт на http://stackoverflow.com/. Человек, который опубликовал скрипт, имеет неактивный аккаунт с ником Ivan.
[sourcecode language=»php»]
/* 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
[/sourcecode]
Категории: Программирование