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No parens in where clause

Ike
I cannot find now, what the precedence is in the where clause of a select
statement, where "AND" and "OR" are mixed in, and there are no parentheses.

For example:

WHERE a=1 and b=2 or c=3

How would that be "parenthesi zed" internally in MySQL? What is the rule for
precedence between and and or? Thanks IKe
May 12 '06 #1
1 1356
Ike wrote:
WHERE a=1 and b=2 or c=3

What is the rule for precedence between and and or?


AND has higher precedence than OR.

E.g.:

WHERE (a=1 AND b=2) OR c=3

FWIW, this is the same boolean operator precedence as in virtually any
other programming language you care to mention.

See also http://dev.mysql.com/doc/refman/5.0/...recedence.html

Regards,
Bill K.
May 12 '06 #2

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