Re: Huh? Data typing bug?

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От Josh Berkus
Тема Re: Huh? Data typing bug?
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Msg-id [email protected]
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Ответ на Re: Huh? Data typing bug?  (Tom Lane <[email protected]>)
Список pgsql-sql
Tom,

> IIRC, number of days (as an int) is what that's supposed to produce.
> 
> If that's not what you wanted, maybe you ought to cast the dates to
> timestamp or some such.

I see.  It was never made clear to me that here the DATE type differs
from DATETIME and TIMESTAMP significantly.  

This makes some sort of sense, now.

Correct me if I'm wrong:

DATE + INT4 = DATE
DATE - DATE = INT4

But:

DATETIME + INTERVAL = DATETIME
DATETIME - DATETIME = INTERVAL

-Josh


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