删除SQL Server数据库中的所有数据

SqlMenage的解决方案对我来说很有效,只是对数据的删除方式做了一些微调- DELETE FROM 而不是 TRUNCATE .

-- disable referential integrity
EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' 
GO 

EXEC sp_MSForEachTable 'DELETE FROM ?' 
GO 

-- enable referential integrity again 
EXEC sp_MSForEachTable 'ALTER TABLE ? WITH CHECK CHECK CONSTRAINT ALL' 
GO

通常我只使用未记录的proc sp\MSForEachTable

-- disable referential integrity
EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' 
GO 

EXEC sp_MSForEachTable 'TRUNCATE TABLE ?' 
GO 

-- enable referential integrity again 
EXEC sp_MSForEachTable 'ALTER TABLE ? CHECK CONSTRAINT ALL' 
GO

另请参见: Delete all data in database (when you have FKs)

/* 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

我知道这已经晚了,但我同意AlexKuznetsov的建议,编写数据库脚本,而不是从表中清除数据。如果 TRUNCATE 解决方案将不起作用,并且您碰巧有大量数据,正在发布(记录) DELETE 语句可能需要很长时间,并且您将留下尚未重新设定种子的标识符(即 INSERT 语句放入带有 IDENTITY 列将获得50000的ID,而不是1)。

要编写整个数据库的脚本,请在SSMS中,右键单击该数据库,然后选择 TASKS Generate scripts :

Next 要跳过向导打开屏幕,然后选择要编写脚本的对象,请执行以下操作:

在 Set scripting options 屏幕上,您可以选择脚本的设置,例如是为所有对象生成一个脚本,还是为单个对象生成单独的脚本,以及是以Unicode还是ANSI格式保存文件:

1. 首先,您必须禁用所有触发器:

   sp_msforeachtable 'ALTER TABLE ? DISABLE TRIGGER all';
   

2. 运行此脚本:(取自此 post 谢谢@sqlmenage)

   SET NOCOUNT ON
   GO
   
   SELECT 'USE [' + db_name() +']';
   ;WITH a AS 
   (
        SELECT 0 AS lvl, 
               t.object_id AS tblID 
        FROM sys.TABLES t
        WHERE t.is_ms_shipped = 0
          AND t.object_id NOT IN (SELECT f.referenced_object_id 
                                  FROM sys.foreign_keys f)
   
        UNION ALL
   
        SELECT a.lvl + 1 AS lvl, 
               f.referenced_object_id AS tblId
        FROM a
        INNER JOIN sys.foreign_keys f ON a.tblId = f.parent_object_id 
                                      AND a.tblID <> f.referenced_object_id
   )
   SELECT 
       'Delete from ['+ object_schema_name(tblID) + '].[' + object_name(tblId) + ']' 
   FROM a
   GROUP BY tblId 
   ORDER BY MAX(lvl),1
   

DELETE 以适当的顺序陈述。从引用的表开始,然后引用表

3. 复制 DELETE FROM

4. 启用触发器

   sp_msforeachtable 'ALTER TABLE ? ENABLE TRIGGER all'
   

5. 提交更改:

   begin transaction
   commit;
   

通常,编写数据库中所有对象的脚本并创建一个空对象(从表中删除或截断对象)要快得多。

下面是我用来从SQLServer数据库中删除所有数据的脚本

------------------------------------------------------------
/* Use database */ 
-------------------------------------------------------------

use somedatabase;

GO

------------------------------------------------------------------
/* Script to delete an repopulate the base [init database] */
------------------------------------------------------------------

-------------------------------------------------------------
/* Procedure delete all constraints */ 
-------------------------------------------------------------

IF EXISTS (SELECT name  
           FROM  sysobjects 
           WHERE name = 'sp_DeleteAllConstraints' AND type = 'P')
    DROP PROCEDURE dbo.sp_DeleteAllConstraints
GO

CREATE PROCEDURE sp_DeleteAllConstraints
AS
    EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL'
    EXEC sp_MSForEachTable 'ALTER TABLE ? DISABLE TRIGGER ALL'
GO

-----------------------------------------------------
/* Procedure delete all data from the database */ 
-----------------------------------------------------

IF EXISTS (SELECT name  
           FROM  sysobjects 
           WHERE name = 'sp_DeleteAllData' AND type = 'P')
    DROP PROCEDURE dbo.sp_DeleteAllData
GO

CREATE PROCEDURE sp_DeleteAllData
AS
    EXEC sp_MSForEachTable 'DELETE FROM ?'
GO

-----------------------------------------------
/* Procedure enable all constraints */ 
-----------------------------------------------

IF EXISTS (SELECT name  
           FROM  sysobjects 
           WHERE name = 'sp_EnableAllConstraints' AND type = 'P')
    DROP PROCEDURE dbo.sp_EnableAllConstraints
GO
-- ....
-- ....
-- ....

EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL'

EXEC sp_MSForEachTable 'ALTER TABLE ? DISABLE TRIGGER ALL'

EXEC sp_MSForEachTable 'DELETE FROM ?'

EXEC sp_MSForEachTable 'ALTER TABLE ? CHECK CONSTRAINT ALL'

EXEC sp_MSForEachTable 'ALTER TABLE ? ENABLE TRIGGER ALL'

EXEC sp_MSFOREACHTABLE 'SELECT * FROM ?'

GO

是的,可以用一行代码删除

SELECT 'TRUNCATE TABLE ' + d.NAME + ';' 
FROM   sys.tables d 
WHERE  type = 'U'