Commit 5cabfa20 authored by paul@teton.kitebird.com's avatar paul@teton.kitebird.com
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manual.texi Update description of logical AND. (In 3.23.9, it changed 

manual.texi	behavior to return NULL, not zero, if either operand is NULL)
parent bd3421c4

Docs/manual.texi

+7 −4
Original line number Diff line number Diff line
@@ -30526,13 +30526,16 @@ mysql> SELECT 1 || NULL; 
@findex && (logical AND)

@item AND

@itemx &&

Logical AND. Returns @code{0} if either argument is @code{0} or @code{NULL},

otherwise returns @code{1}:

Logical AND. For non-@{NULL} operands, returns @code{1} if both operands are

non-zero and @code{0} otherwise.

Returns @code{NULL} if either argument is @code{NULL}:

@example

mysql> SELECT 1 && NULL;

        -> 0

mysql> SELECT 1 && 1;

        -> 1

mysql> SELECT 1 && 0;

        -> 0

mysql> SELECT 1 && NULL;

        -> NULL

@end example

@end table