Question

有人能指出我们下面的查询有什么问题吗？我有3张桌子。

1. Order Header - Order_header_id
2. Order Pricelist - order_header_id(fk),pricelist_id(fk) 
3. Pricelist - pricelist_id,Name

我正在尝试使用下面的查询根据订单标题获取价目表名称，并且它会抛出“缺少右括号”错误。不确定我是否朝着正确的方向前进。

Select pricelist.Name from ORDER_HEADER
left outer join 
(select order_pricelist.pricelist_id from order_pricelist on order_header.order_header_id = order_pricelist.order_header_id 
left outer join 
(select pricelist.name from pricelist) pricelist on order_pricelist.pricelist_id = pricelist.pricelist_id)

由于

Answer 1

Select pricelist.Name from ORDER_HEADER
left outer join 
(select pricelist_id, order_header_id  from order_pricelist) op 
   ON order_header.order_header_id = op.order_header_id 
left outer join 
(select name,pricelist_id  from pricelist) pr 
   ON op.pricelist_id = pr.pricelist_id

但实际上，你不需要这里的子查询，所以它可以是这样的：

Select pricelist.Name from ORDER_HEADER
left outer join  order_pricelist op on order_header.order_header_id = op.order_header_id 
left outer join  pricelist pr on op.pricelist_id = pr.pricelist_id

连接的SQL语法错误

1 个答案: