# **=**

## **Operator Description**

The `=` operator is used for comparison operations. When the value of the `=` left operation is equal to the value of the `=` right operation, the result of the `=` operator returns `true`.

## **Grammar Structure**

```sql
SELECT x = y;
```

## **Example**

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

```text
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)
```