|

Description

Bitwise OR.

The result type depends on whether the arguments are evaluated as binary strings or numbers:

• Binary-string evaluation occurs when the arguments have a binary string type, and at least one of them is not a hexadecimal literal, bit literal, or NULL literal. Numeric evaluation occurs otherwise, with argument conversion to unsigned 64-bit integers as necessary.
• Binary-string evaluation produces a binary string of the same length as the arguments. If the arguments have unequal lengths, an ER_INVALID_BITWISE_OPERANDS_SIZE error occurs. Numeric evaluation produces an unsigned 64-bit integer.

Syntax

1. > SELECT value1 | value2;

Examples

1. mysql> SELECT 29 | 15;
2. +---------+
3. | 29 | 15 |
4. +---------+
5. |      31 |
6. +---------+
7. 1 row in set (0.01 sec)

9. mysql> select null | 2;
10. +----------+
11. | null | 2 |
12. +----------+
13. |     NULL |
14. +----------+
15. 1 row in set (0.01 sec)

17. mysql> select null | 2;
18. +----------+
19. | null | 2 |
20. +----------+
21. |     NULL |
22. +----------+
23. 1 row in set (0.01 sec)

25. create table t1(a int, b int unsigned);
26. insert into t1 values (-1, 1), (-5, 5);

28. mysql> select a | 2, b | 2 from t1;
29. +-------+-------+
30. | a | 2 | b | 2 |
31. +-------+-------+
32. |    -1 |     3 |
33. |    -5 |     7 |
34. +-------+-------+