如何計算 Oracle 中多列的總和

Question

我正在使用 oracle SQL 來計算我數據庫中某個列的值，這是我的 LOG0104M 表，其中包含值：

PRODUCT_CODE   PRODUCT_NAME   PACKING_STYLE   TOTAL_QUANTITY   QUANTITY_IN_FULL_CTN   SPAREBOX
  3300099        AP-1516D       30                  50                1                  NULL
  3330000        NEOSENSE       60                  20                1                  NULL

健康）狀況：

1. Fullbox =  (total_quantity / packing style)
2. SpareBox: (Base on value of Spare_Quantity)
 Spare_quantity = total_quantity - fullBox * packing_style.
    If spare qty = 0 => spare box = 0
    If spare qty > 0 => spare box = 1.
 

這是我的查詢：

WITH BOXCOUNT AS (SELECT ROUND(SUM(TOTAL_QUANTITY/PACKING_STYLE)) AS FULLBOX FROM LOG0104M)
SELECT
  L55.PRODUCT_CODE 
  , L55.PRODUCT_NAME 
  , L55.TOTAL_QUANTITY
  , L55.PACKING_STYLE
  , L55.QUANTITY_IN_FULL_CTN
  , L55.SPAREBOX
  , BC.FULLBOX

  ,CASE 
      WHEN SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE) = 0  THEN L55.SPAREBOX = 0
      WHEN SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE) != 0 THEN L55.SPAREBOX = 1
   END AS SPARE_QUANTITY

 FROM LOG0104M L55, BOXCOUNT BC
 GROUP BY 
    L55.PRODUCT_CODE
    , L55.PRODUCT_NAME
    , L55.TOTAL_QUANTITY
    , L55.PACKING_STYLE
    , L55.QUANTITY_IN_FULL_CTN
    , BC.FULLBOX
    , L55.SPAREBOX

（更新）

在 CASE WHEN 條件下，SPARE_QUANTITY 的總和：

if sum of SPARE_QUANTITY = 0 => SpareBox column will be 0, 
     and sum of SPARE_QUANTITY != 0 => SpareBox column will be 1

運行查詢時，會發生以下錯誤：

SQL Error [905] [42000]: ORA-00905: missing keyword

12、13、14 行似乎發生了錯誤，如何解決這個問題，非常感謝

Answer 1

CASE表達式中的THEN子句不正確：

CASE WHEN SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE) = 0  
     THEN L55.SPAREBOX = 0
----------^
     WHEN SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE) != 0 
     THEN L55.SPAREBOX = 1
END AS SPARE_QUANTITY

Oracle 在SELECT查詢中沒有 Boolean 數據類型。

我猜你只是想要：

(CASE WHEN SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE) = 0  
      THEN 0
      WHEN SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE) <> 0 
      THEN 1
 END) AS SPARE_QUANTITY

或者，如果您想消除CASE ：

ABS(SIGN(SUM(L55.TOTAL_QUANTITY - BC.FULLBOX * L55.PACKING_STYLE))) AS SPARE_QUANTITY