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使用SQL語(yǔ)句，如何才能批量刪除用戶(hù)表呢？下面就將為您介紹SQL批量刪除用戶(hù)表(先刪除所有外鍵約束,再刪除所有表) 的方法，供您參考，希望對(duì)您有所幫助。

--1.刪除外鍵約束
DECLARE c1 cursor for
    select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; '
    from sysobjects
    where xtype = 'F'
open c1
declare @c1 varchar(8000)
fetch next from c1 into @c1
while(@@fetch_status=0)
    begin
        exec(@c1)
        fetch next from c1 into @c1
    end
close c1
deallocate c1
--2.刪除表
DECLARE c2 cursor for
    select 'drop table ['+name +']; '
    from sysobjects
    where xtype = 'u'
open c2
declare @c2 varchar(8000)
fetch next from c2 into @c2
while(@@fetch_status=0)
    begin
        exec(@c2)
        fetch next from c2 into @c2#p#
    end
close c2
deallocate c2

--批量清除表內(nèi)容：

--1.禁用外鍵約束
DECLARE c1 cursor for
    select 'alter table ['+ object_name(parent_obj) + '] nocheck constraint ['+name+']; '
    from sysobjects
    where xtype = 'F'
open c1
declare @c1 varchar(8000)
fetch next from c1 into @c1
while(@@fetch_status=0)
    begin
        exec(@c1)
        fetch next from c1 into @c1
    end
close c1
deallocate c1
--2.清除表內(nèi)容
DECLARE c2 cursor for
    select 'truncate table ['+name +']; '
    from sysobjects
    where xtype = 'u' #p#
open c2
declare @c2 varchar(8000)
fetch next from c2 into @c2
while(@@fetch_status=0)
    begin
        exec(@c2)
        fetch next from c2 into @c2
    end
close c2
deallocate c2
--3.啟用外鍵約束
DECLARE c1 cursor for
    select 'alter table ['+ object_name(parent_obj) + '] check constraint ['+name+']; '
    from sysobjects
    where xtype = 'F'
open c1
declare @c1 varchar(8000)
fetch next from c1 into @c1
while(@@fetch_status=0)
    begin
        exec(@c1)
        fetch next from c1 into @c1
    end
close c1
deallocate c1

標(biāo)題名稱(chēng)：SQL批量刪除用戶(hù)表的方法
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