Question

需要选择最后一个InvoiceID和相应的字段。整个sql包含几个内连接。

SELECT max(InvoiceID), 
       InvoiceEndDate 
  FROM Invoices 
 WHERE TransactionOrderItemID = '000831'

现在，我收到了InvoiceID，并且必须再次获取InvoiceEndDate。

有没有一种有效的方法呢？

Answer 1

SELECT InvoiceID, InvoiceEndDate 
FROM Invoices 
WHERE TransactionOrderItemID='000831'
ORDER BY InvoiceID DESC
LIMIT 1

Answer 2

SELECT InvoiceID, InvoiceEndDate 
FROM Invoices INV
WHERE TransactionOrderItemID='000831'
  AND INV.InvoiceID = (SELECT MAX(SUB.InvoiceID)
    FROM Invoices SUB WHERE SUB.TransactionOrderItemID='000831');

Answer 3

看看Including an Aggregated Column's Related Values，它有几种方法可以实现这个目标

SQL - 选择最大ID的字段

3 个答案: