SQL动态库存移动报告

我已设法从数据库中获取数据，如下所示：

STOCKNAME | STORENAME | WEEKNUM  | SOH   | SALES
Apples    | Store 1   | 10       |   1   |  3
Apples    | Store 1   |  9       |   4   |  1
Apples    | Store 1   |  8       |   5   |  
Pears     | Store 1   | 10       |  15   |  0
Pears     | Store 1   |  9       |  15   |  0
Pears     | Store 1   |  8       |  15   |  
Mangoes   | Store 1   | 10       |  33   | 15 <-- They could have received more stock between week week
Mangoes   | Store 1   |  9       |  25   |  8
Mangoes   | Store 1   |  8       |  32   |     

对数据运行另一个查询，并通过MAX Weeknumber SOH图。添加一个别名为TransactionType的附加静态列，其值为“Current SOH”

SELECT STOCKNAME, STORENAME, SOH, 0 AS QTY, 'SOH' AS TRANSACTIONTYPE 
FROM TABLE1
GROUP BY STOCKNAME, STORENAME,'SOH' AS TRANSACTIONTYPE
HAVING WEEKNUMBER = 10        <-- Not sure how to dynamic this. Weeknumber will change

然后在这些结果中搜索

CASE WHEN (QTY = 0 and SOH > 0) THEN 'Attention Required Here' ELSE 'Everything is Cool' END

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您能否添加预期结果（根据您的样本数据）？此外，还使用了标记dbms产品-答案可能取决于它。请特别查看窗口函数和LAG（）。使用windows函数，您应该能够在一条语句中进行计算。

SELECT STOCKNAME, STORENAME, SOH, 0 AS QTY, 'SOH' AS TRANSACTIONTYPE 
FROM TABLE1
GROUP BY STOCKNAME, STORENAME,'SOH' AS TRANSACTIONTYPE
HAVING WEEKNUMBER = 10        <-- Not sure how to dynamic this. Weeknumber will change

SELECT * FROM QUERY1
UNION
SELECT * FROM QUERY2

CASE WHEN (QTY = 0 and SOH > 0) THEN 'Attention Required Here' ELSE 'Everything is Cool' END