=

Description

The = operator returns true only if the left-hand operand is equal to the right-hand operand.

Syntax

> SELECT x = y;

Examples

mysql> SELECT 2 = 2;
+-------+
| 2 = 2 |
+-------+
| true  |
+-------+
1 row in set (0.01 sec)

```sql create table t1 (spID smallint,userID bigint,score int); insert into t1 values (1,1,1); insert into t1 values (2,2,2); insert into t1 values (2,1,4); insert into t1 values (3,3,3); insert into t1 values (1,1,5); insert into t1 values (4,6,10); insert into t1 values (5,11,99);

mysql> select userID,spID,score from t1 where userID=spID and userID=score; +--------+------+-------+ | userid | spid | score | +--------+------+-------+ | 1 | 1 | 1 | | 2 | 2 | 2 | | 3 | 3 | 3 | +--------+------+-------+ 3 rows in set (0.00 sec) ```