| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | itdcgb <itdcgb(at)its(dot)hants(dot)gov(dot)uk> |
| Cc: | pgsql-docs(at)postgresql(dot)org |
| Subject: | Re: Tutorial: chapter 5 |
| Date: | 2000-12-12 16:47:51 |
| Message-ID: | 200012121647.LAA12907@candle.pha.pa.us |
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| Lists: | pgsql-docs |
Applied. Thanks.
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> In 'Joins between classes' in Section 5 of the tutorial we have, in
> the first paragraph:
>
> As an example, say we wish to find all the records that
> are in the temperature range of other records. In
> effect, we need to compare the temp_lo and temp_hi
> attributes of each EMP instance to the temp_lo and
> temp_hi attributes of all other EMP instances.
>
> I believe that EMP should read WEATHER, as the example query that
> follows joins WEATHER to itself.
>
> EMP is often used in Oracle examples.
>
> Regards,
> Graham
>
>
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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