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从两列中除以数字，并在MySQL的新列中显示结果

2024-04-28 14:28:16 447

让我们首先创建一个表-

mysql> create table DemoTable719 (FirstNumber int,SecondNumber int);

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable719 values(20,10);
mysql> insert into DemoTable719 values(500,50);
mysql> insert into DemoTable719 values(400,20);

使用select语句显示表中的所有记录-

mysql> select *from DemoTable719;

这将产生以下输出-

+-------------+--------------+
| FirstNumber | SecondNumber |
+-------------+--------------+
| 20          |           10 |
| 500         |           50 |
| 400         |           20 |
+-------------+--------------+
3 rows in set (0.00 sec)

以下是将数字分为两列并在新列中显示结果的查询-

mysql> select *,FirstNumber/SecondNumber AS Result from DemoTable719;

这将产生以下输出7min；

+-------------+--------------+---------+
| FirstNumber | SecondNumber | Result  |
+-------------+--------------+---------+
| 20          |           10 | 2.0000  |
| 500         |           50 | 10.0000 |
| 400         |           20 | 20.0000 |
+-------------+--------------+---------+
3 rows in set (0.00 sec)

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从两列中除以数字，并在MySQL的新列中显示结果

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