[EMAIL PROTECTED] wrote:
Hello,
thank you - now it works.
d_parenttype PT1 LEFT OUTER JOIN t_booklists bl ON (PT1.ID = bl.PARENTTYPE_1),
d_parenttype PT2 LEFT OUTER JOIN t_booklists bk ON (PT2.ID = bk.PARENTTYPE_2)
I had to put the alias to all listet fields in the select.
Unless you are relating PT1 to PT2 in some way, you should not expect
this query to perform well because you will be generating a Cartesian
product between PT1 and PT2. I doubt this is actually what you are
trying to do (although it will eventually work). If you posted just a
few more details about the query you are trying to write, we could try
to help you to rewrite it in a way that will perform much better than
the translation you just attempted.
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Shawn Green, Support Engineer
MySQL Inc., USA, www.mysql.com
Office: Blountville, TN
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