MySQL numeric type conversion function

In MySQL, we often need to convert between different numeric types. MySQL provides some built-in functions that can help us convert numeric types. This article will introduce some commonly used MySQL number type conversion functions and provide corresponding source code examples.

1. CAST function

The CAST function is used to convert an expression to a specified data type. It can be used to convert a number to a different number type, such as converting an integer to a floating point number, or a floating point number to an integer.

Sample code:

SELECT CAST(10 AS FLOAT);  -- 将整数转换为浮点数
SELECT CAST(3.14 AS INT);  -- 将浮点数转换为整数

2. CON