ABS()

Function Description

ABS(X) returns the absolute value of X, or NULL if X is NULL.

Function Syntax

> ABS(number)

Parameter definition

Parameters	Description
number	Required parameters, any numerical data type can be taken

The return value type is consistent with the input type.

Example

drop table if exists t1;
create table t1(a int,b float);
insert into t1 values(1,-3.1416);
insert into t1 values(-1,1.57);

mysql> select abs(a),abs(b) from t1;
+---------------------------------------+
| abs(a) | abs(b) |
+---------------------------------------+
| 1 | 3.1415998935699463 |
| 1 | 1.5700000524520874 |
+---------------------------------------+
2 rows in set (0.01 sec)