Use ABS 2 : ABS « Math « SQL / MySQL

1. SQL / MySQL
2. Math
3. ABS

Use ABS 2

/*
mysql> select ABS(-4.05022);
+---------------+
| ABS(-4.05022) |
+---------------+
|       4.05022 |
+---------------+
1 row in set (0.01 sec)


*/

select ABS(-4.05022);

           
       

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