Search Postgresql Archives

query join issue

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I have a query that joins 3 tables, TRAIN_MOD,TRAIN_COMP and TRAINING_COURSE,

There could be many training_course records for each of the other tables. I want to get all records from the Train_mod and Train_comp table even if there are no training course records available. This is the query I'm trying and I get nothing. The data I'm trying this on has no training_course records but does have records in the other tables. What am I doing wrong.


SELECT *
FROM TRAIN_MOD LEFT OUTER JOIN TRAINING_COURSE ON TRAIN_MOD.TRM_SEQ_NO=TRAINING_COURSE.TC_TRM_SEQ
LEFT OUTER JOIN TRAIN_COMP ON TRAIN_MOD.TRM_TRC_SEQ=TRAIN_COMP.TRC_SEQ_NO
where TC_PUB_ED  IS TRUE OR  TC_SEQ_NO IS NULL

Christine Penner
Ingenious Software
250-352-9495
christine@xxxxxxxxxxxxxxxxxxxxx

--
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux