Question

我有以下代码，我们需要在17个不同的位置查看我们的库存。我下面的代码仅适用于5个位置，但有效。期待我们可以使用更清晰，更高效的代码来获得相同的结果。

SELECT DISTINCT imitmidx_sql.item_no, imitmidx_sql.item_desc_1, imitmidx_sql.item_desc_2,
 (SELECT qty_on_hand FROM iminvloc_sql AS IMINVLOC_SQL_1 WHERE (loc = '1') AND (item_no = imitmidx_sql.item_no)) AS Loc1,
 (SELECT qty_on_hand FROM iminvloc_sql AS IMINVLOC_SQL_2 WHERE (loc = '2') AND (item_no = imitmidx_sql.item_no)) AS Loc2,
 (SELECT qty_on_hand FROM iminvloc_sql AS IMINVLOC_SQL_3 WHERE (loc = '3') AND (item_no = imitmidx_sql.item_no)) AS Loc3,
 (SELECT qty_on_hand FROM iminvloc_sql AS IMINVLOC_SQL_4 WHERE (loc = '4') AND (item_no = imitmidx_sql.item_no)) AS Loc4,
 (SELECT qty_on_hand FROM iminvloc_sql AS IMINVLOC_SQL_5 WHERE (loc = '5') AND (item_no = imitmidx_sql.item_no)) AS Loc5
FROM iminvloc_sql INNER JOIN imitmidx_sql ON iminvloc_sql.item_no = imitmidx_sql.item_no

Answer 1

怎么样：

select
    imitmidx_sql.item_no,
    imitmidx_sql.item_desc_1,
    imitmidx_sql.item_desc_2,
    itm_loc_qty.*

    from iminvloc_sql

pivot (SUM(qty_on_hand) for loc in ([1],[2],[3],[4],[5])) as itm_loc_qty -- Add here as necessary

join imitmidx_sql
on itm_loc_qty.item_no = imitmidx_sql.item_no

更高效的代码

1 个答案: