Question

我有以下查询，返回4亿行。我想运行查询，以便循环并一次插入100万条记录。我可以得到循环查询。

insert into AST (DataAreaId, Name)

select f.DataAreaId, its.Name....... etc
from Transform.InventFin f
inner join Staging.INVENTSETTLEMENT its
on f.ITSRECID=its.RECID
and f.DataAreaId=its.DATAAREAID

Answer 1

尝试以下操作（假设DataAreaId是唯一的，如果不是，则需要在NOT EXISTS中包含这些列。）

declare @Count int
set @Count = 1
while @Count > 0
   begin
         insert into AST (DataAreaId, Name)
        select TOP (1000000)  f.DataAreaId, its.Name....... etc
        from Transform.InventFin f
        inner join Staging.INVENTSETTLEMENT its
        on f.ITSRECID=its.RECID
        and f.DataAreaId=its.DATAAREAID 
        WHERE NOT EXISTS
        (
         SELECT 1 FROM AST A WHERE AST.DataAreaId = F.DataAreaId
        )
     set @Count = @@ROWCOUNT
   end

循环插入SQL查询

1 个答案: