如何从mysql中的临时表中选择子查询

Question

我有tmp表，它从三个表中收集联合数据，并且它正常工作，当试图从这个tmp表中选择任何列作为子查询时，问题开始，但是我想这样做因为我会计算从TMP表的结果，所以如何做到这一点

我看到此错误消息

[42S02] [1146]表 'projectdb.tmp' 不存在

该代码的问题

(SELECT stquantity) AS SB 

我的代码是

SELECT tmp.it_code,(SELECT tmp.stquantity) AS SB 
FROM (
    SELECT 
    tm.it_code AS it_code, 
    2   AS ts_type, 
    (
     SELECT SUM(rrg1.rpog_quantity) 
     FROM d_repo_returned rpr1, d_repo_returned_grid AS rrg1 
     WHERE rrg1.rpog_send_main_id = rpr1.rpo_id 
      AND rrg1.rpog_item_id = tm.it_id 
      AND rpr1.rpo_returned_date <= 1457996475 

    )   AS stquantity, 
    (SELECT SUM(rrg2.rpog_quantity) 
    FROM d_repo_returned rpr2, d_repo_returned_grid AS rrg2 
    WHERE rrg2.rpog_send_main_id = rpr2.rpo_id 
      AND rrg2.rpog_item_id = tm.it_id 
      AND rpr2.rpo_returned_date <= 1459375315 

    )   AS edquantity 

    FROM d_repo_returned, d_repo_returned_grid, d_items AS tm 
    WHERE rpog_send_main_id = rpo_id 
     AND rpog_item_id = tm.it_id 
    GROUP BY tm.it_code 
    UNION ALL 
    SELECT 
    ts.it_code AS it_code, 
    3   AS ts_type, 
    (
     SELECT SUM(stg1.sig_quantity) 
     FROM d_send_items str1, d_send_items_grid AS stg1 
     WHERE stg1.sig_send_main_id = str1.si_id 
      AND stg1.sig_item_id = ts.it_id 
      AND str1.si_send_date <= 1457996475 

    )   AS stquantity, 
    (SELECT SUM(stg2.sig_quantity) 
    FROM d_send_items str2, d_send_items_grid AS stg2 
    WHERE stg2.sig_send_main_id = str2.si_id 
      AND stg2.sig_item_id = ts.it_id 
      AND str2.si_send_date <= 1459375315 

    )   AS edquantity 
    FROM d_send_items str, d_send_items_grid stg, d_items AS ts 
    WHERE stg.sig_send_main_id = str.si_id 
     AND stg.sig_item_id = ts.it_id 
    GROUP BY ts.it_code 
    UNION ALL 
    SELECT 
    di.it_code    AS it_code, 
    1      AS ts_type, 
    (SELECT SUM(di1.it_quantity) 
    FROM d_items di1 
    WHERE di1.it_code = di.it_code AND di1.it_date <= 1457996475 
    GROUP BY di1.it_code) AS stquantity, 
    (SELECT SUM(di2.it_quantity) 
    FROM d_items di2 
    WHERE di2.it_code = di.it_code AND di2.it_date <= 1459375315 
    GROUP BY di2.it_code) AS edquantity 
    FROM d_items di 
    GROUP BY di.it_code 
) AS tmp 

Answer 1

尝试改变第一线（SELECT tmp.it_code，（SELECT stquantity）AS SB） 到

SELECT it_code, stquantity AS SB 

这是我能理解从您的查询。 :)