Question

我是sql的新手。我有一个表格如下

Fruit   TotalNumber  SellAmount
Mango      5            5
Banana     4            NULL
Peach      6            6
Kiwi       7            1
Apple      9            NULL

我想根据总数和卖出金额来编写查询。我想检索总数与卖出金额相同的所有行。我怎么能实现这一点。谢谢

Answer 1

使用where：

SELECT * FROM TableName WHERE TotalNumber = SellAmount;

编辑空值：

SELECT * 
FROM TableName 
WHERE TotalNumber = SellAmount
AND SellAmount IS NOT NULL;

如果您还需要TotalNumber优于0，则juste添加AND SellAmount > 0

Answer 2

就这样做：

SELECT Fruit, TotalNumber, SellAmount 
FROM table
WHERE TotalNumber = SellAmount

Answer 3

这很简单： - ）

select * from MyTable where TotalNumber = SellAmount;

sql根据同一个表中的两列查询行的选择

3 个答案: