Question

我需要一些sql statemen的帮助。我有不同的模式和相同的表名。通过以下选择，我可以获得所有表格：

select name from sys.tables where QUOTENAME(name) = '[Table_1]'

现在我想循环遍历所有表，并对此进行类似的查询：

delete from tablename where condition1 > condition2

我怎样才能实现这个目标？

Answer 1

试试这个

declare @count int, @i  int = 1, @sql nvarchar(max), @tablename varchar(1000)

select @count = count(*) from sys.tables where QUOTENAME(name) = '[Table_1]'

create table #temp(id int identity(1,1), table varchar(1000))
insert into #temp
select name from sys.tables where QUOTENAME(name) = '[Table_1]'

while(@i<=@count)
begin
   select @tablename = (select table from #temp where id = @i)
   set @sql = 'delete from '+@tablename+' where condition1>condition2'
   execute sp_executesql @sql
   set @i = @i+1
end

SQL从动态多个表中选择行和删除/更新

1 个答案: