To set a variable explicitly to a particular value, use a SET statement. : Variable « Select Clause « SQL / MySQL

To set a variable explicitly to a particular value, use a SET statement.

SET syntax uses = rather than := to assign the value:
mysql> SET @sum = 4 + 7;
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT @sum;
| @sum |
|   11 |
1 row in set (0.00 sec)



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