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id from a field - Mailing list pgsql-novice

From Luis Silva
Subject id from a field
Date
Msg-id BAY18-F1162F54D047DE1DFF9ED92B5FD0@phx.gbl
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In response to Re: returning Record type problem  ("A. Kretschmer" <andreas.kretschmer@schollglas.com>)
Responses Re: id from a field
List pgsql-novice
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I there!! I'm having a problem. I know that it's possible to know the exact
ID of a table or a column using OIDs but, is it possible to know the ID from
a field?. for example I have a table named "identities" with 3 columns:
name,address and age and 3 users in that table:
richard | spain | 22
joe | france | 23
carol | italy | 24

for example, does the field "france" as a unique id that I could save and
get that info only with that id?

thanks a lot Luis

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