脚本宝典收集整理的这篇文章主要介绍了游标删除多个表里脏数据的方法,脚本宝典觉得挺不错的,现在分享给大家,也给大家做个参考。
第一种方法:
CREATE PRoc [dbo].[delAllRecord]
as
declare @tableName nvArchar(255)
declare @SQL nVARchar(255)
Declare curTable Cursor
for select Table_Name From information_schema.tables where TABLE_TYPE='BASE TABLE'
Open curTable
Fetch Next From curTable Into @tableName
WHILE(@@FETCH_statUS = 0)
BEgin
set @Sql = N'delete from '+@tableName
exec sp_executesql @sql
Fetch Next From curTable Into @tableName
end
CLOSE curTable
DEALLOCATE curTable
第二种方法:
--declare test_cursor cursor scroll for
--select id,table_name from dbo.section_type
--open test_cursor
--declare @id int
--declare @table_name nvarchar(50)
--while @@fetch_status=0
--begin
--fetch next from test_cursor into @id,@table_name
--print @id
--print @table_name
--end
--close test_cursor
--deallocate test_cursor
--删除projectrangtree的脏数据
delete from projectrangtree where deleteversion>0
delete from projectrangtree where type=3 and parentid not in(select id from projectrangtree where type=2)
delete from projectrangtree where type=4 and parentid not in(select id from projectrangtree where type=3)
delete from projectrangtree where type=5 and parentid not in(select id from projectrangtree where type=4)
--删除section_settings的脏数据
delete from section_settings where parent_prj_tree_id not in(select id from projectrangtree)
--删除各个表里的测点
declare @table_name varchar(50)
declare @sql nvarchar(500)--此处要注意,声明的长度一定要够
--declare @measuring_point_id nvarchar(500)
declare del_cursor cursor scroll for
select table_name from section_type
open del_cursor
fetch next from del_cursor into @table_name
--print @table_name
while (@@fetch_status=0)
begin
--print quotename(@table_name)
--set @measuring_point_id='select measuring_point_id from '+quotename(@table_name)
--exec sp_executesql @measuring_point_id
set @sql = 'delete from '+ quotename(@table_name) +' where measuring_point_id not in(select id from measuring_point_setting)'
exec sp_executesql @sql
--delete from @table_name where measuring_point_id not in (select id from measuring_point_setting)
fetch next from del_cursor into @table_name
end
close del_cursor
deallocate del_cursor
--delete from (select talbe_name from section_type) where measuring_point_id not in (select id from measuring_point_setting)
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