Re: Tutorial: chapter 5

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От Bruce Momjian
Тема Re: Tutorial: chapter 5
Дата
Msg-id 200012121647.LAA12907@candle.pha.pa.us
обсуждение исходный текст
Ответ на Tutorial: chapter 5  (itdcgb <itdcgb@its.hants.gov.uk>)
Список 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
>
>


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