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CerebroSQL

OR

База данных: MySQL

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Syntax:
OR, ||

Logical OR. When both operands are non-NULL, the result is 1 if any
operand is nonzero, and 0 otherwise. With a NULL operand, the result is
1 if the other operand is nonzero, and NULL otherwise. If both operands
are NULL, the result is NULL.

Example

mysql> SELECT 1 OR 1;
-> 1
mysql> SELECT 1 OR 0;
-> 1
mysql> SELECT 0 OR 0;
-> 0
mysql> SELECT 0 OR NULL;
-> NULL
mysql> SELECT 1 OR NULL;
-> 1

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