Question

SELECT ID, AppID, Description, Min([Transaction Date]) AS 'Transacton Date'
FROM AppProsHist
WHERE [Description]='Non-Final Rejection'
GROUP BY ID, AppID, Description

我认为这只允许在我的表格中显示第一个（最早的）交易日期，但是，这仍然显示每个交易日期。有没有办法改变这一点，以便我只收到一个ID，AppID，描述的日期？

Answer 1

您应该使用ORDER BY和LIMIT 1来获取有序集的第一条记录。订购时ASC或DESC将设置排序方向。所以试试

SELECT TOP 1 ID, AppID, Description, Min([Transaction Date]) AS TransactionDate
FROM AppProsHist
WHERE [Description]='Non-Final Rejection'
GROUP BY ID, AppID, Description
ORDER BY TransactionDate DESC, ID

尝试使用MIN（）获取最早的日期

1 个答案: