From: | Achilleus Mantzios <achill(at)matrix(dot)gatewaynet(dot)com> |
---|---|
To: | Frank Morton <fmorton(at)base2inc(dot)com> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: conditional query? |
Date: | 2003-10-31 13:47:49 |
Message-ID: | Pine.LNX.4.44.0310311544270.13725-100000@matrix.gatewaynet.com |
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Thread: | |
Lists: | pgsql-sql |
Why dont you try a combination of
CASE WHEN ... THEN ... ELSE ... END construct
along with a LEFT OUTER join (in case parentId is null).
Not sure how "portable" the above will be.
O kyrios Frank Morton egrapse stis Oct 31, 2003 :
> I have a table called a "profile" that has company addresses as well
> as individual contact information. Simpifying:
>
> id (the primary key)
> parentId (any profile can have a parent ie, contact parent is a company)
> address (for this example, will just have one piece of the address)
> useParentAddress
>
> If "useParentAddress"=="Y", that means that the parent address of this
> person should really be used for mailings. If == "N" then the address
> with that profile is the right one to use.
>
> Is there any way to do a single select to get a single "address" back
> that is the right one depending on the value of "useParentAddress"
> field?
>
> Also want to make this sql as portable as possible.
>
> Will appreciate any ideas.
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
>
--
-Achilleus
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