基於兩個聚合函數返回計算字段的結果

Question

SQL 查詢返回我正在尋找的結果，但是，我想排除余額（別名字段）等於零的結果，以減少出現的結果集。

我已經使用 Where "balance" <> 0 和變體，但不斷收到錯誤聚合不能在 where 子句中使用。 我也嘗試了嵌套選擇，同樣的錯誤

SELECT "Item"."ItemCode"
,"ItmWhs"."WhsCode"
,"ItmWhs"."AvgPrice"
,"ItmWhs"."OnHand" AS "On Hand"
,"ItemGrp"."ItmsGrpNam"
,"Item"."ItmsGrpCod"
,"Item"."U_StyleCode"
,"Item"."U_StyleName"
,"Item"."U_ColourCode"
,"Item"."U_ColourName"
,"Item"."U_Size"
,"Item"."U_Gender"
,"Item"."U_LCC"
,SUM("Document"."InQty")
,SUM("Document"."OutQty")
,(SUM("Document"."InQty") - SUM("Document"."OutQty")) AS "Balance"
FROM "SBK_UA"."OINM" AS "Document"
,"SBK_UA"."OITW" AS "ItmWhs"
,"SBK_UA"."OITM" AS "Item"
INNER JOIN "SBK_UA"."OITB" AS "ItemGrp" ON "Item"."ItmsGrpCod" = "ItemGrp"."ItmsGrpCod"
WHERE "Document"."ItemCode" = "ItmWhs"."ItemCode"
AND "Document"."Warehouse" = "ItmWhs"."WhsCode"
AND "Item"."ItemCode" = "ItmWhs"."ItemCode"
AND "Document"."CreateDate" <= ?
GROUP BY "Item"."ItemCode"
,"ItmWhs"."WhsCode"
,"ItmWhs"."AvgPrice"
,"ItmWhs"."OnHand"
,"ItemGrp"."ItmsGrpNam"
,"Item"."ItmsGrpCod"
,"Item"."U_StyleCode"
,"Item"."U_StyleName"
,"Item"."U_Size"
,"Item"."U_ColourCode"
,"Item"."U_ColourName"
,"Item"."U_Gender"
,"Item"."U_LCC"

返回除余額為零以外的所有結果。

Answer 1

你想要一個HAVING子句。 在GROUP BY之后添加：

HAVING SUM("Document"."InQty") - SUM("Document"."OutQty") <> 0