搜索發票表格以查找數量大於0且小於0的發票0

Question

我正在搜索具有> 0和<的發票的發票單項表。0發票單項表包含發票中所有項目的詳細信息。我該如何編寫一個查詢，以提供所有發票數量> 0和< 0.

Answer 1

這樣的情況如何？這使用兩個查詢。第一個發現負數量的所有發票。然後，它應用第二個查詢從發票清單中查找那些也具有正數量的查詢。

SELECT DISTINCT 
    PosNegInvoices.InvoiceID 
FROM ItemizedInvoice AS NegInvoices 
CROSS APPLY 
(
    SELECT 
    InvoiceID 
    FROM ItemizedInvoice 
    WHERE InvoiceID = NegInvoices.InvoiceID 
    AND Quantity > 0 
) AS PosNegInvoices 
WHERE NegInvoices.Quantity < 0 

下面是一個使用CTE的另一個版本：

WITH NegInvoices AS 
(
    SELECT 
    InvoiceID 
    FROM ItemizedInvoice 
    WHERE Quantity < 0 
), 
PosInvoices AS 
(
    SELECT 
    InvoiceID 
    FROM ItemizedInvoice 
    WHERE Quantity > 0 
) 
SELECT DISTINCT 
    PosInvoices.InvoiceID 
FROM NegInvoices 
JOIN PosInvoices 
ON NegInvoices.InvoiceID = PosInvoices.InvoiceID