SqlServer批量清理指定数据库中所有数据

  次阅读 来源:互联网(转载协议) 2016-02-16 10:35 我要评论(0)

在实际应用中,当我们准备把一个项目移交至客户手中使用时,我们需要把库中所有表先前的测试数据清空,以给客户一个干净的数据库,如果涉及的表很多,要一一的清空,不仅花费时间,还容易出错以及漏删,在这儿我提供了一个方法,可快捷有效的清空指定数据库所有表的数据。仅供参考,欢迎交流不同意见。

--Remove all data from a database

SET NOCOUNT ON

--Tables to ignore

DECLARE @IgnoreTables

TABLE (TableName varchar(512))

INSERT INTO @IgnoreTables (TableName) VALUES ('sysdiagrams')

DECLARE @AllRelationships

TABLE (ForeignKey varchar(512)

,TableName varchar(512)

,ColumnName varchar(512)

,ReferenceTableName varchar(512)

,ReferenceColumnName varchar(512)

,DeleteRule varchar(512))

INSERT INTO @AllRelationships

SELECT f.name AS ForeignKey,

OBJECT_NAME(f.parent_object_id) AS TableName,

COL_NAME(fc.parent_object_id,

fc.parent_column_id) AS ColumnName,

OBJECT_NAME (f.referenced_object_id) AS ReferenceTableName,

COL_NAME(fc.referenced_object_id,

fc.referenced_column_id) AS ReferenceColumnName,

delete_referential_action_desc as DeleteRule

FROM sys.foreign_keys AS f

INNER JOIN sys.foreign_key_columns AS fc

ON f.OBJECT_ID = fc.constraint_object_id

DECLARE @TableOwner varchar(512)

DECLARE @TableName varchar(512)

DECLARE @ForeignKey varchar(512)

DECLARE @ColumnName varchar(512)

DECLARE @ReferenceTableName varchar(512)

DECLARE @ReferenceColumnName varchar(512)

DECLARE @DeleteRule varchar(512)

PRINT('Loop through all tables and switch all constraints to have a deleterule of CASCADE')

DECLARE DataBaseTables0

CURSOR FOR

SELECT SCHEMA_NAME(t.schema_id) AS schema_name, t.name AS table_name

FROM sys.tables AS t;

OPEN DataBaseTables0;

FETCH NEXT FROM DataBaseTables0

INTO @TableOwner,@TableName;

WHILE @@FETCH_STATUS = 0

BEGIN

IF (NOT EXISTS(SELECT TOP 1 1 FROM @IgnoreTables WHERE TableName =@TableName))

BEGIN

PRINT '['+@TableOwner+'].[' + @TableName + ']';

DECLARE DataBaseTableRelationships CURSOR FOR

SELECT ForeignKey, ColumnName, ReferenceTableName, ReferenceColumnName

FROM @AllRelationships

WHERE TableName = @TableName

OPEN DataBaseTableRelationships;

FETCH NEXT FROM DataBaseTableRelationships INTO @ForeignKey, @ColumnName,@ReferenceTableName, @ReferenceColumnName;

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