SQL 连接子查询-数据库问题

SQL join subquery(SQL 连接子查询)

本文介绍了SQL 连接子查询的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我尝试寻找我的问题的答案，但未能得到真正有帮助的答案.我写了一个 sql 代码，但似乎无法找到问题所在.是否可以在FROM"部分中放置子查询?

I tried searching for an answer to my problem but failed to get an answer that actually helped. I've written an sql code but can't seem to find where the problem is. Is it possible to put a subquery in the "FROM" section?

SELECT S2.ITEM,
       S1.SHOP_ORDER,
       S1.OPERATION_NO,
       S1.START_DATE,
       S1.QTY_GOODS,
       S1.QTY_ENTERED,
       S1.QTY_MRB
FROM   (SELECT SHOP_ORD_RPT.OPERATION_NO,
               SHOP_ORD_RPT.SHOP_ORDER
        FROM   FLAME.SHOP_ORD_RPT
        WHERE  SHOP_ORD_RPT.OPERATION_NO = 110
                OR SHOP_ORD_RPT.OPERATION_NO = 370) AS S1
       JOIN (SELECT SHOP_ORD.SHOP_ORDER
             FROM   FLAME.SHOP_ORD
             WHERE  SHOP_ORD.ITEM = '3A2375'
                     OR SHOP_ORD.ITEM = '3A2703')AS S2
         ON S1.SHOP_ORDER = S2.SHOP_ORDER;

我在运行脚本时收到的错误是:

The error I receive upon running the script is:

SQL 命令没有正确结束

SQL command not properly ended

如果有人可以提供帮助，我将不胜感激.非常感谢你-露丝

I'd appreciate if anyone can help. Thank you very much- Ruth

推荐答案

Try to remove AS keywrod after FROM 和 JOIN 子查询如下

Try to remove AS keywrod after FROM and JOIN subquery as below

SELECT S2.ITEM, S1.SHOP_ORDER, S1.OPERATION_NO, S1.START_DATE,S1.QTY_GOODS, S1.QTY_ENTERED, S1.QTY_MRB
FROM (
    SELECT SHOP_ORD_RPT.OPERATION_NO, SHOP_ORD_RPT.SHOP_ORDER
    FROM FLAME.SHOP_ORD_RPT
    WHERE SHOP_ORD_RPT.OPERATION_NO =110
    OR SHOP_ORD_RPT.OPERATION_NO =370
    )  S1
JOIN (
    SELECT SHOP_ORD.SHOP_ORDER
    FROM FLAME.SHOP_ORD
    WHERE SHOP_ORD.ITEM ='3A2375'
    OR SHOP_ORD.ITEM ='3A2703'
    )  S2
ON S1.SHOP_ORDER = S2.SHOP_ORDER;

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