Re: car mileage summation / sledgehammer method - Mailing list pgsql-sql

From Maarten Boekhold
Subject Re: car mileage summation / sledgehammer method
Date
Msg-id 200008171159.e7HBxem98875@hub.org
Whole thread Raw
In response to car mileage summation / sledgehammer method  (Oliver Seidel <os10000@in-medias-res.com>)
Responses Re: car mileage summation / sledgehammer method  ("Ross J. Reedstrom" <reedstrm@rice.edu>)
List pgsql-sql


> View definition: SELECT mileage.miles, mileage.date FROM mileage;

> detail=# select mileage.miles, mileage.date, sum(dup.miles) from
>          mileage, dup
>        where
>    dup.date <= mileage.date group by mileage.date, mileage.miles
>     order by mileage.date;

Now that's a bit stupid. Why create this view when you can do the same
thing with a table alias (I'm I calling this by the right name?).

select m.miles, m.date, sum(d.miles) from mileage m, mileage d
where.......

Maarten


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