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MyIsam table returns erronous results
Posted by: liviu macoviciuc
Date: February 18, 2008 11:13AM

Description:
I have an application, written in php, which executes the following
query :

$query="SELECT * FROM agenda WHERE inuse=0 AND $crit='$val' AND
crt <> ALL(SELECT crt FROM apun WHERE campania='$campania') AND
crt <> ALL(SELECT crt FROM agiorn WHERE campania='$campania') AND
crt <> ALL(SELECT crt FROM reprog WHERE datarec>NOW() AND
campania='$campania') ORDER BY crt DESC LIMIT 1";

So, this query should return a row from agenda table which doesn't have
a corespondent in the others tables.The agenda table has a PRIMARY KEY
whichis used to establish the reference with the other specified tables
The application works perfect 99,99% of time.However, from time to
time, the query returns a record which should not be returned(for
example, a record from agenda table which has a correspondent in the
apun table)
WHY ?
I am using Windows 2000 Professional with all updates,Mysql 5.0.45
Community Edition and only MyIsam tables
Please somebody give me an advice :liviu.macoviciuc@gmail.com !
Thanks

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MyIsam table returns erronous results
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