column number instead of column name - Mailing list pgsql-novice

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Subject column number instead of column name
Date
Msg-id 20060120002437.E662DAB0@dm20.mta.everyone.net
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Responses Re: column number instead of column name  (Michael Fuhr <mike@fuhr.org>)
List pgsql-novice
how can i make use of the column number instead of the column name when making the select statement?

for instance:
"SELECT mytable.col[1], mytable.col[2], mytable.col[3], mytable.userid from mytable"

i have several tables and i need to extract the first three columns and a known column. the first three columns for the
differenttables vary, but all the tables have the userid column. 


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