ROW_NUMBER() OVER (PARTITION BY) 给出相同的行号

Question

我在项目中使用 SAP HANA 数据库。我试过这个 SQL 查询来获取带有行号的值。但它给出了所有行的 1。

    SELECT ROW_NUMBER() OVER (PARTITION BY "ItemCode") AS "ID", "ItemCode", "CommitedQty", "JobId", "WarehouseID"
    FROM
        (SELECT "ItemCode", SUM("CommitedQty") AS "CommitedQty","JobId", "WarehouseID"
        FROM "Stock" 
        WHERE "BaseEntry" = 10352
        GROUP BY "ItemCode","JobId", "WarehouseID")

这是我得到的结果。

为什么所有行号都变成了1，请问如何解决？

谢谢。

Answer 1

使用这个：ROW_NUMBER() OVER(ORDER BY code) 它是连续序列，你使用 partition by 它会重置每个代码。

SELECT ROW_NUMBER() OVER (ORDER BY "ItemCode") AS "ID", "ItemCode", "CommitedQty", "JobId", "WarehouseID"
    FROM
        (SELECT "ItemCode", SUM("CommitedQty") AS "CommitedQty","JobId", "WarehouseID"
        FROM "Stock" 
        WHERE "BaseEntry" = 10352
        GROUP BY "ItemCode","JobId", "WarehouseID")

ROW_NUMBER() OVER (PARTITION BY) 给出相同的行号

ROW_NUMBER() OVER (PARTITION BY) gives same row numbers

sql

hana