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MySQL查询将列除以100？

2024-04-30 07:58:04 345

让我们首先创建一个表-

mysql> create table DemoTable
   (
   Number float
   );

使用插入命令在表中插入记录-

mysql> insert into DemoTable values(1000);
mysql> insert into DemoTable values(1);
mysql> insert into DemoTable values(10);
mysql> insert into DemoTable values(100);
mysql> insert into DemoTable values(390);

使用select语句显示表中的所有记录-

mysql> select *from DemoTable;

+--------+
| Number |
+--------+
| 1000   |
| 1      |
| 10     |
| 100    |
| 390    |
+--------+
5 rows in set (0.00 sec)

以下是将列除以100-的查询

mysql> update DemoTable set Number=Number/100;
Rows matched: 5 Changed: 5 Warnings: 0

让我们再次显示表记录-

mysql> select * from DemoTable;

这将产生以下输出-

+--------+
| Number |
+--------+
| 10     |
| 0.01   |
| 0.1    |
| 1      |
| 3.9    |
+--------+
5 rows in set (0.00 sec)

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MySQL查询将列除以100？

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