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formating interval question - Mailing list pgsql-general

From mike
Subject formating interval question
Date
Msg-id 1096023524.12742.5.camel@datacc
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Responses Re: formating interval question
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I have an interval field which is used to calculate total hours.

At present it outputs as days hours minutes

Is there any way to output as total hours

I have tried to_char(field,'HH:MM')

but I get wierd results like -51 or -5

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