mysqlDECIMAL
时间: 2023-08-26 13:19:33 浏览: 52
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相关问题
MySQL decimal
MySQL decimal是一种用于存储精确数值的数据类型。它可以存储固定精度的小数,即可以指定小数点前后的位数。在创建表时,可以指定decimal的精度和标度。
精度(precision)是指decimal数据类型的总位数,包括小数点前和小数点后的位数。标度(scale)是指decimal数据类型小数点后的位数。
例如,DECIMAL(8,2)代表一个具有总共8位(包括小数点前后)且小数点后有2位的数字。这意味着它可以存储如下范围的值:-9999.99 到 9999.99。
使用decimal数据类型可以确保数值计算的准确性和精度,特别适用于货币和金融相关的应用程序。
mysql decimal
The MySQL DECIMAL data type is used to store exact numeric values with a fixed precision and scale. The precision is the total number of digits that can be stored, and the scale is the number of decimal places that can be stored.
For example, DECIMAL(8,2) can store up to 8 digits, with 2 of them being decimal places. So, it can store values like 123456.78 or -123456.78.
DECIMAL data type is useful for financial and monetary values, where exact precision is required. It is also commonly used in scientific calculations where precise decimal values are necessary.