MySQL - 如何更新小数列以允许更多位数?

2022-01-17 00:00:00 decimal sql-update mysql alter-table

我是 MySQL 的初学者，我不小心创建了一个表，其中包含一个名为

I'm a beginner in MySQL, and I accidentally created a table with a column named

(price decimal(2,2));

它需要是 decimal(4,2) 以允许 4 位数字.既然我已经创建了它，那么将该十进制值更新为 decimal(4,2) 的最简单方法是什么?还是我需要完全删除该列，然后用正确的数字重新创建它?

It needs to be decimal(4,2) to allow 4 digits. Since I've already created it, what is the easiest way to update that decimal value to decimal(4,2)? Or do I need to drop that column completely, and re-create it with the correct numbers?

推荐答案

ALTER TABLE mytable MODIFY COLUMN mycolumn newtype

示例:

ALTER TABLE YourTableNameHere MODIFY COLUMN YourColumnNameHere decimal(4,2)

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