From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
---|---|
To: | tango ward <tangoward15(at)gmail(dot)com> |
Cc: | "pgsql-general(at)lists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
Subject: | Re: KeyError: self._index[x] |
Date: | 2018-05-08 03:50:14 |
Message-ID: | CAKFQuwbQ4NFdOsnynqK6OAmdbFUsOjT+LtuNdfA6SFqBCQc6YA@mail.gmail.com |
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Lists: | pgsql-general |
On Monday, May 7, 2018, tango ward <tangoward15(at)gmail(dot)com> wrote:
>
> cur_t.execute("""
> SELECT TRANSLATE(snumber, ' ', '')
> FROM sprofile """)
>
> # This will result in KeyError
> for row in cur_t:
> print row['snumber']
>
> # This works fine
> for row in cur_t:
> print row[0]
>
So apparently when you execute your query the result has at least one
column but that column isn't named "snumber". I'm sure there is a way in
Python to debug "row" and find out what names it does have. Or maybe
execute the query in something like psql and observe e column name there.
That said, by default the name of columns whose values are derived by a
single function call should be the name of the function. So "translate",
not "snumber" - the latter being consumed by the function. You can as use
"as <alias>" to give it a different fixed name and refer to that.
David J.
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