删除SQL Server数据库中的所有数据

Question

如何从数据库的所有表中删除所有记录？我可以用一个SQL命令来完成它，还是我需要为每个表创建一个SQL命令？

Answer 1

SQLMenace的解决方案为我工作，稍微调整了数据如何删除 - 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 

Answer 2

通常我只会用无证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 

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

Answer 3

它通常是更快脚本出数据库中的所有对象，并创建一个空的，那从表中删除或截断表。

Answer 4

/* 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 

Answer 5

我知道这是晚了，但我同意AlexKuznetsov的建议，脚本的数据库，而不是通过从表中清除数据的麻烦去。如果TRUNCATE解决方案无法正常工作，并且您碰巧拥有大量数据，则发布（记录日志）DELETE语句可能需要很长时间，并且您将留下尚未重新编码的标识符（即INSERT语句为一个带有IDENTITY列的表格会为您提供50000的ID而不是1的ID）。

脚本整个数据库，在SSMS中，右键单击该数据库，然后选择TASKS - >Generate scripts：

点击Next跳过向导打开屏幕，然后选择哪些对象想脚本：

在Set scripting options屏幕，你可以选择设置脚本，像是否生成1个脚本的所有对象，或对单个对象单独的脚本，以及是否保存在Unicode或ANSI文件：

该向导会显示摘要，您可以使用验证一切正常，然后点击'完成'关闭。

Answer 6

下面是我用来从SQL Server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 
-- .... 
-- .... 
-- .... 

Answer 7

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:(从这个采取post谢谢@SQLMenace）

   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 
   

该脚本将以正确的顺序产生DELETE语句。从引用的表开始然后引用那些

复制DELETE FROM语句，并且一旦运行它们

启用触发器

sp_msforeachtable 'ALTER TABLE ? ENABLE TRIGGER all' 

提交更改：

begin transaction 
commit; 

Answer 8

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