Re: Database/Table Design for Global Country Statistics

From: Stefan Schwarzer <stefan(dot)schwarzer(at)grid(dot)unep(dot)ch>
To: Richard Huxton <dev(at)archonet(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Database/Table Design for Global Country Statistics
Date: 2007-09-13 13:06:19
Message-ID: F1570191-DF9C-46B4-AB5F-044BB1DA201D@grid.unep.ch
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> Umm - not sure what you're after. What's wrong with one of:
> SELECT ... ORDER BY year, value
> SELECT ... ORDER BY value, year
>
> Or did you want a particular year pulled out of the general list,
> in which case try something like:
> SELECT ... ORDER BY (year = 1970), year, value
> SELECT ... ORDER BY (year <> 1970), year, value
> This works because booleans are considered sortable too.

Uiuiui.... and it gets even worse... I want to implement the
possibility to calculate on-the-fly the per Capita values for the
selected data set. With the "old" table design it would be something
like this:

SELECT (fish_catch.y_1970 / pop_total.y_1970),
(fish_catch.y_1971 / pop_total.y_1971) FROM .....

But how would this work with the new design?

Sorry for these repeated questions.... (But it's you guys' fault -
you said I had a bad table design.... :-))

Thanks for any hints!

Stef

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