子查询不返回不同的结果

Question

我已经有几年没有写过 SQL 了，我觉得我遗漏了一些明显的东西，但我想不通！... 我在 PGADMIN 3 版本 1.22.2 中使用 SQL 查询窗口 我想从子查询中得到一个总和，以将一个值返回到我的主查询中；主查询基于过滤客户表，子查询基于特定时期销售的商品数量并满足多个条件。 这就是我的时刻：

select customerid, account, name,
-- Aluminium
(select sum(qty_inv) from ainvdet
 where inv_account = CUST.account
  and sales_year = 2021
  and line_type = 'S'
  and layout_section = 'D'
  and qty_inv > 0
  and ((product_group like 'IN%' and (part like '%H01%' or description like 
      '%H01%')) 
   or (part like 'DCA40%' or part like 'DCA60%' or part like 'D5432%' or part 
      like 'D5433%' or part like 'D5434%' or part like '220392%' or part like 
      '220360%' or part like 'D1106%' or part like 'DL510%' or part like 
      'DL508%' or part like 'DL509%' or part like 'DL507%' or part like 
      'DT693%' or part like 'DL608%' or part like 'DL205%' or part like 
      'SPET%' or part like 'XOET%') 
   or ((part like 'E24%' and (part like '%AL%' or part like '%AZ%')) or (part 
      like 'E25%' and (part like '%AL%' or part like '%AZ%')) or part like 
      'E70%' or  part like 'E71%' or part like 'LANCIA%' or part like 
      'TC163%' or part like 'TC622%' or part like 'TE943%' or part like 
      'TE953%') 
   or ((part like '%H01%' or description like '%H01%') and product_group in 
      ('LTTU','LTGR','LTPO')))) as "Aluminium", 
-- Steel
(select sum(qty_inv) from ainvdet 
 where inv_account = CUST.account 
 and sales_year = 2021 
 and line_type = 'S' 
 and layout_section = 'D' 
 and qty_inv > 0  
 and ((product_group in ('MCXP','MCXX','MC4G')) 
 OR (product_group like 'IN%' and (part like '%PC3500%' OR part like
    '%PC3600%' OR description like '%PC3500%' OR description like '%PC3600%'))      
 or (part like '%DH406%' or part like '%DH408%' or part like '%DH421%') 
 or (product_group = 'DRUD' and (part like '%PC3500%' or description like 
   '%PC3500%')) 
 or (product_group in ('LTPO','LTGR') and (part like '%NC3220%' or 
    description like '%NC3220%' or part like '%NC3225%' or description like 
    '%NC3225%')) 
 or (product_group = 'LTTU' and (part like '%NC3220%' or description like 
    '%NC3220%' or part like '%NC3225%' or description like '%NC3225%' or part      
    like '%NC3215%' or description like '%NC3215%' or part like '%YG3020%' or 
    description like '%YG3020%')))
) as "Steel"


from customer CUST 
where userchk1 <> true AND  userchk2 <> true AND userchk3 <> true AND 
userchk4 <> true AND userchk5 <> true AND userchk6 <> true AND userchk7 <> 
true AND userchk8 <> true AND userchk9 <> true AND userchk10 <> true

limit 5

我从客户表中获取各个字段，但子查询为所有客户返回相同的值。

我也尝试过使用 GROUP BY customerid 并得到相同的结果，如下所示：

Output Results

（n.b. 限制只是为了让它在测试时运行得更快）

Answer 1

未经测试（显然）

---

SELECT cu.customerid
        , cu.account
        , cu.name
                -- Aluminium
        , SUM(vd.qty_inv) FILTER(
                WHERE  (vd.product_group LIKE 'IN%' AND (vd.part LIKE '%H01%' OR vd.description LIKE 
                        '%H01%')) 
                        OR (vd.part LIKE 'DCA40%' OR vd.part LIKE 'DCA60%' OR vd.part LIKE 'D5432%' OR vd.part 
                        LIKE 'D5433%' OR vd.part LIKE 'D5434%' OR vd.part LIKE '220392%' OR vd.part LIKE 
                        '220360%' OR vd.part LIKE 'D1106%' OR vd.part LIKE 'DL510%' OR vd.part LIKE 
                        'DL508%' OR vd.part LIKE 'DL509%' OR vd.part LIKE 'DL507%' OR vd.part LIKE 
                        'DT693%' OR vd.part LIKE 'DL608%' OR vd.part LIKE 'DL205%' OR vd.part LIKE 
                        'SPET%' OR vd.part LIKE 'XOET%') 
                        OR ((vd.part LIKE 'E24%' AND (vd.part LIKE '%AL%' OR vd.part LIKE '%AZ%')) OR (vd.part 
                        LIKE 'E25%' AND (vd.part LIKE '%AL%' OR vd.part LIKE '%AZ%')) OR vd.part LIKE 
                        'E70%' OR  vd.part LIKE 'E71%' OR vd.part LIKE 'LANCIA%' OR vd.part LIKE 
                        'TC163%' OR vd.part LIKE 'TC622%' OR vd.part LIKE 'TE943%' OR vd.part LIKE
                        'TE953%') 
                        OR ((vd.part LIKE '%H01%' OR vd.description LIKE '%H01%') AND vd.product_group in 
                        ('LTTU','LTGR','LTPO'))
                ) as "Aluminium"
                -- Steel
        , SUM(vd.qty_inv) FILTER( 
                WHERE (vd.product_group in ('MCXP','MCXX','MC4G')) andor 
                 (vd.product_group LIKE 'IN%' AND (vd.part LIKE '%PC3500%' OR vd.part LIKE
                'PC3600%' OR vd.description LIKE '%PC3500%' OR vd.description LIKE '%PC3600%')) andor     
                 (vd.part LIKE '%DH406%' OR vd.part LIKE '%DH408%' OR vd.part LIKE '%DH421%') andor
                 (vd.product_group = 'DRUD' AND (vd.part LIKE '%PC3500%' OR vd.description LIKE 
                'PC3500%')) andor
                 (vd.product_group in ('LTPO','LTGR') AND (vd.part LIKE '%NC3220%' OR 
                vd.description LIKE '%NC3220%' OR vd.part LIKE '%NC3225%' OR vd.description LIKE 
                'NC3225%')) andor
                 (vd.product_group = 'LTTU' AND (vd.part LIKE '%NC3220%' OR vd.description LIKE 
                'NC3220%' OR vd.part LIKE '%NC3225%' OR vd.description LIKE '%NC3225%' OR vd.part      
                 '%NC3215%' OR vd.description LIKE '%NC3215%' OR vd.part LIKE '%YG3020%' OR 
                vd.description LIKE '%YG3020%'))
                 ) as "Steel" 

FROM customer cu
LEFT JOIN ainvdet vd ON vd.inv_account = cu.account
                AND vd.sales_year = 2021
                AND vd.line_type = 'S'
                AND vd.layout_section = 'D'
                AND vd.qty_inv > 0
WHERE cu.userchk1 <> true AND  cu.userchk2 <> true 
        AND cu.userchk3 <> true AND cu.userchk4 <> true 
         AND cu.userchk5 <> true AND cu.userchk6 <> true 
         AND cu.userchk7 <> true AND cu.userchk8 <> true 
         AND cu.userchk9 <> true AND cu.userchk10 <> true
GROUP BY 1,2,3
        ;