From: | Carlos Chapi <carlos(dot)chapi(at)2ndquadrant(dot)com> |
---|---|
To: | denero team <deneroteam(at)gmail(dot)com> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: need help |
Date: | 2013-02-21 19:56:46 |
Message-ID: | CAAk_w-qkwCtrKP5FH4Xro0=xdKj=LAnBdG4ZaV1s7fd5_eRSRw@mail.gmail.com |
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Thread: | |
Lists: | pgsql-sql |
Hello,
Maybe this query can help you
SELECT p.name, l.name
FROM location l
INNER JOIN product_move m ON m.source_location = location.id
INNER JOIN product p ON m.product_id = p.id
WHERE p.id = $product_id
AND m.datetime < $given_date
ORDER BY datetime DESC LIMIT 1
It will return the name of the product and the location for a given id and
date.
2013/2/21 denero team <deneroteam(at)gmail(dot)com>
> Hi All,
>
> I need some help for my problem.
> Problem :
> I have following tables
> 1. Location :
> id, name, code
> 2. Product
> id, name, code, location ( ref to location table)
> 2. Product_Move
> id, product_id ( ref to product table), source_location (ref to
> location table) , destination_location ( ref to location table) ,
> datetime ( date when move is created)
>
> now i want to know for given period of dates, where is the product
> actually.
>
> can anyone help me ??
>
> Thanks,
>
> Dhaval
>
>
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