<>,!=

Description

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

Syntax

  1. > SELECT x <> y;

Examples

  1. > SELECT 2 <> 2;
  2. +--------+
  3. | 2 != 2 |
  4. +--------+
  5. | false  |
  6. +--------+
  7. 1 row in set (0.01 sec)
  1. > create table t1 (spID smallint,userID bigint,score int);
  2. > insert into t1 values (1,1,1);
  3. > insert into t1 values (2,2,2);
  4. > insert into t1 values (2,1,4);
  5. > insert into t1 values (3,3,3);
  6. > insert into t1 values (1,1,5);
  7. > insert into t1 values (4,6,10);
  8. > insert into t1 values (5,11,99);
  9. > select userID,spID,score from t1 where userID=spID and userID<>score;
  10. +--------+------+-------+
  11. | userid | spid | score |
  12. +--------+------+-------+
  13. |      1 |    1 |     5 |
  14. +--------+------+-------+
  15. 1 row in set (0.00 sec)