TRUE FALSE
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Description
The constants TRUE and FALSE evaluate to 1 and 0, respectively. The constant names can be written in any lettercase.
Examples
SELECT TRUE, true, FALSE, false; +------+------+-------+-------+ | TRUE | TRUE | FALSE | FALSE | +------+------+-------+-------+ | 1 | 1 | 0 | 0 | +------+------+-------+-------+
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