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<>,!=

Operator Description

The <>, != operator returns true only if the left operand is not equal to the right operand.

Grammar Structure

> SELECT x <> y;

Example

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

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 | 5 |
+-----------+-------+
1 row in set (0.00 sec)