Re: Three table query
От | Frank Bax |
---|---|
Тема | Re: Three table query |
Дата | |
Msg-id | 3.0.6.32.20011222221937.022e45c0@pop6.sympatico.ca обсуждение исходный текст |
Ответ на | Three table query (Brian <Brrrian@Excite.com>) |
Список | pgsql-novice |
select travh.*, travd.*, op.* from travh, travd, op where travd.travh_id = travh.travh_id and op.op_id = travd.op_id and travh.travh_id = 'whatever'; At 04:58 PM 12/22/01 -0800, Brian wrote: >Sorry, first post with no topic. > >Given 3 tables: >--------------- >Table Operations(Op) >Op_ID, Op_Name,... > >and > >Table TravelerHEADER(TravH) >TravH_ID, TravName, Part_ID,... > >and > >Table TravelerDETAIL(TravD) >TravD_ID, TravH_ID, Op_ID, TravOrder,... > >How can I retrieve the OP RecordSet >associated with the subset of TravD records >given a single TravH_ID? > >That is to say: >There are a finite set of travd records that relate to a singular travh record... >for each of those travd records I want the related Op record. > >Stumped again, >Brian > > >---------------------------(end of broadcast)--------------------------- >TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
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