Hey folks,
I'm trying to convert a project from Oracle to Mysql 5, and I have a
question about outer join syntax in mysql. In oracle, I can do something
like the below to tell Oracle that on the outer joined table, if there's a
value, I want it to be X. On mySql, all I've been able to figure out is the
second syntax (which works, I think). Is that the preferred method?
ORACLE, NON-STANDARDS COMPLIANT CODE
FROM fscd_client c, fscd_county x, fscd_state s, fscd_survey u, fscd_post
p
WHERE c.countyid = x.countyid
AND x.stateid = s.stateid
AND c.clientid = u.clientid (+)
AND c.clientid = p.clientid (+)
AND c.active = 1
AND p.active (+) = 1
AND u.active (+) = 1 <!--- This part here says that if a value
exists, it should be 1 --->
MYSQL VERSION
FROM (fscd_county x JOIN fscd_client c ON (x.countyid = c.countyid)
JOIN fscd_state s on (s.stateid = x.stateid))
LEFT OUTER JOIN fscd_survey u ON c.clientid = u.clientid
LEFT OUTER JOIN fscd_post p ON c.clientid = p.clientid
WHERE x.active = 1
AND c.active = 1
AND (p.active = 1 OR p.active is null)
AND (u.active = 1 OR u.active is null) <!--- Is this the preferred method
in Mysql? --->
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