Question

在感恩节假期里，我一直在绞尽脑汁，做了以下事情没有运气。

我运行以下SQL脚本以从我们的销售数据库获取最近12个月的数据。虽然这已经按照我想要的另一份报告返回了每次销售，但有人要求我现在搜索结果并查看产品是否已经订购过，如果没有将结果返回到另一份报告。

这是我到目前为止所得到的：

SELECT 
    cicmpy.cmp_name AS "Company Name", 
    humres.fullname AS "Salesperson", 
    oehdrhst_sql.ord_dt AS "Order Date", 
    oelinhst_sql.item_no AS "Item Number", 
    oelinhst_sql.item_desc_1 AS "Description",
    oelinhst_sql.qty_ordered AS "Qty Ordered", 
    oelinhst_sql.item_desc_2 AS "UPC CODE",   
    oehdrhst_sql.oe_po_no AS "Customer PO"
FROM   
    (humres humres 
INNER JOIN 
    (cicmpy cicmpy 
INNER JOIN 
    oehdrhst_sql oehdrhst_sql ON cicmpy.cmp_code=oehdrhst_sql.cus_no) 
    ON humres.res_id=oehdrhst_sql.slspsn_no) 
INNER JOIN 
    oelinhst_sql oelinhst_sql ON oehdrhst_sql.ord_no = oelinhst_sql.ord_no
WHERE  
    oehdrhst_sql.ord_dt > DATEADD(year, -1, GETDATE())
ORDER BY 
    cicmpy.cmp_name, oelinhst_sql.item_no

以上以下列格式返回我的数据

Company Name    Salesperson Order Date  Item Number Description Qty Ordered UPC CODE    Customer PO
Company 1       John Doe    12/29/2014  1200052     Product 1            90 0000000001      292072
Company 1       John Doe    4/7/2015    1200053     Product 2            90 0000000002      348615
Company 1       John Doe    6/2/2015    1200052     Product 1            90 0000000001      382184
Company 2       Jane Doe    12/29/2014  1200052     Product 1            90 0000000001      292072
Company 2       Jane Doe    4/7/2015    1200053     Product 2            90 0000000002      348615
Company 2       Jane Doe    6/2/2015    1200052     Product 1            90 0000000001      382184
Company 3       Jane Doe    12/29/2014  1200052     Product 1            90 0000000001      292072
Company 3       Jane Doe    4/7/2015    1200053     Product 2            90 0000000002      348615
Company 3       John Smith  6/2/2015    1200053     Product 2            90 0000000002      382184
Company 3       John Smith  12/29/2014  1200052     Product 1            90 0000000001      292072
Company 3       John Smith  4/7/2015    1200053     Product 2            90 0000000002      348615
Company 3       John Smith  6/2/2015    1200052     Product 1            90 0000000001      382184

我曾经想过使用COUNT但是我无法想象如何通过客户名称来限制它我也玩弄了使用Distinct，但我也想不通。任何帮助都会受到赞赏，因为我无法继续向Excel发送20,000多行销售额来过滤这些单一报告。

有人要求我在结果中搜索（如上例所示）并查看产品是否已经订购过，如果没有，则将结果返回到另一份报告。有效地对这些结果进行查询，即。当公司1下订单时，新产品的商品编号为1200053，不在之前的购买中，因此需要返回以下商品

Company Name    Salesperson Order Date  Item Number Description Qty Ordered UPC CODE    Customer PO
Company 1       John Doe    12/29/2015  1200053     Product 3            90 0000000001      292999

Answer 1

要仅包含在DATE之前未购买产品的客户，只需在where子句中添加NOT EXISTS (<Some Query>)条件即可。

编辑：进一步说明，NOT EXISTS将检查客户是否历来订购该商品，如果没有，请在结果中退回该客户。

见下文。

DECLARE @GT DATETIME
SET @GT = GETDATE();

SELECT 
    cicmpy.cmp_name AS [Company Name], 
    humres.fullname AS [Salesperson], 
    oehdrhst_sql.ord_dt AS [Order Date], 
    oelinhst_sql.item_no AS [Item Number], 
    oelinhst_sql.item_desc_1 AS [Description],
    oelinhst_sql.qty_ordered AS [Qty Ordered], 
    oelinhst_sql.item_desc_2 AS [UPC CODE],   
    oehdrhst_sql.oe_po_no AS [Customer PO]
FROM cicmpy cicmpy 
INNER JOIN oehdrhst_sql oehdrhst_sql 
    ON cicmpy.cmp_code = oehdrhst_sql.cus_no
INNER JOIN humres humres 
    ON humres.res_id = oehdrhst_sql.slspsn_no
INNER JOIN oelinhst_sql oelinhst_sql 
    ON oehdrhst_sql.ord_no = oelinhst_sql.ord_no
WHERE oehdrhst_sql.ord_dt > DATEADD(year, -1, @GT)
    AND NOT EXISTS  --Exclude those customers identified in the sub query below.
                    (
                        --Identify customers where the item was purchased previously.
                        select *
                        from cicmpy c 
                        INNER JOIN oehdrhst_sql oh 
                            ON  c.cmp_code = oh.cus_no
                        INNER JOIN oelinhst_sql ol
                            ON oh.ord_no = ol.ord_no
                        where c.cmp_code = oehdrhst_sql.cmp_code
                            and ol.item_no = oelinhst_sql.item_no
                            and ol.ord_dt <= DATEADD(year, -1, @GT)
                    )
ORDER BY 
    cicmpy.cmp_name, oelinhst_sql.item_no;

希望这有帮助！

SQL查找客户是否在过去12个月内订购了产品

1 个答案: