删除数据库的所有存储过程、主键、外键、索引等

最新推荐文章于 2025-06-10 15:21:06 发布

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#存储 #数据库 #string #permissions #table #c

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本文提供了一组用于删除SQL Server数据库中各种对象（如存储过程、约束、触发器和索引等）的T-SQL脚本。通过这些脚本可以有效地清理数据库环境。

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--删除存储过程
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE TYPE='P' AND STATUS>=0)
BEGIN
SELECT TOP 1 @STRING='DROP PROCEDURE '+NAME FROM SYSOBJECTS WHERE TYPE = 'P' AND STATUS>=0
--SELECT @STRING
EXEC(@STRING)
END

--默认值或 DEFAULT 约束
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE XTYPE='D')
BEGIN
SELECT top 1 @STRING='ALTER TABLE '+B.NAME+' DROP CONSTRAINT '+A.NAME
   FROM (SELECT PARENT_OBJ,NAME FROM SYSOBJECTS WHERE XTYPE='D') A,
         (SELECT ID,NAME FROM SYSOBJECTS WHERE OBJECTPROPERTY(ID, N'ISUSERTABLE') = 1) B
     WHERE A.PARENT_OBJ=B.ID
EXEC(@STRING)
END

--UNIQUE 约束
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE XTYPE='UQ')
BEGIN
SELECT top 1 @STRING='ALTER TABLE '+B.NAME+' DROP CONSTRAINT '+A.NAME
   FROM (SELECT PARENT_OBJ,NAME FROM SYSOBJECTS WHERE XTYPE='UQ') A,
         (SELECT ID,NAME FROM SYSOBJECTS WHERE OBJECTPROPERTY(ID, N'ISUSERTABLE') = 1) B
     WHERE A.PARENT_OBJ=B.ID
EXEC(@STRING)
END

--FOREIGN KEY 约束
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE TYPE='F')
BEGIN
SELECT top 1 @STRING='ALTER TABLE '+B.NAME+' DROP CONSTRAINT '+A.NAME
   FROM (SELECT PARENT_OBJ,NAME FROM SYSOBJECTS WHERE TYPE='F') A,
         (SELECT ID,NAME FROM SYSOBJECTS WHERE OBJECTPROPERTY(ID, N'ISUSERTABLE') = 1) B
     WHERE A.PARENT_OBJ=B.ID
EXEC(@STRING)
END

--PRIMARY KEY 约束
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE XTYPE='PK')
BEGIN
SELECT top 1 @STRING='ALTER TABLE '+B.NAME+' DROP CONSTRAINT '+A.NAME
   FROM (SELECT PARENT_OBJ,NAME FROM SYSOBJECTS WHERE XTYPE='PK') A,
        (SELECT ID,NAME FROM SYSOBJECTS WHERE OBJECTPROPERTY(ID, N'ISUSERTABLE') = 1) B
     WHERE A.PARENT_OBJ=B.ID
EXEC(@STRING)
END

--触发器
DECLARE @STRING VARCHAR(8000)
WHILE EXISTS(SELECT NAME FROM SYSOBJECTS WHERE XTYPE='TR')
BEGIN
SELECT top 1 @STRING='DROP TRIGGER '+NAME FROM SYSOBJECTS WHERE XTYPE='TR'
EXEC(@STRING)
END

--索引
declare @string varchar(8000)
while exists(
select TABLE_NAME= o.name,INDEX_NAME= x.name
   from sysobjects o, sysindexes x, syscolumns c, sysindexkeys xk
   where o.type in ('U')
   and convert(bit,(x.status & 0x800)/0x800)=0
   and x.id = o.id
   and o.id = c.id
   and o.id = xk.id
   and x.indid = xk.indid
   and c.colid = xk.colid
   and xk.keyno <= x.keycnt
   and permissions(o.id, c.name) <> 0
   and     (x.status&32) = 0 -- No hypothetical indexes
   group by o.name,x.name)
begin
select top 1 @string='drop index '+o.name+'.'+ x.name
   from sysobjects o, sysindexes x, syscolumns c, sysindexkeys xk
   where o.type in ('U')
   and convert(bit,(x.status & 0x800)/0x800)=0
   and x.id = o.id
   and o.id = c.id
   and o.id = xk.id
   and x.indid = xk.indid
   and c.colid = xk.colid
   and xk.keyno <= x.keycnt
   and permissions(o.id, c.name) <> 0
   and     (x.status&32) = 0 -- No hypothetical indexes
   group by o.name,x.name
exec(@string)
end