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Thread: first message: SELECT FROM

first message: SELECT FROM

From
"Aílsom F. Heringer"
Date:
Hi,
This is my first message, and I need some help. I have just installed
Postgresql 8.2. (Windows).

At pgAdmin III Query, when I send SELECT * FROM USUARIOS, I get all
columns correctly. But when I try to get only one column, SELECT senha
FROM USUARIOS, I get the error message:

ERROR: column "senha" does not exist
SQL state: 42703
Character: 8

What is the problem ?



--
--
Aílsom F. Heringer
Rio de Janeiro, Brasil
ailsom@gmail.com
ailsom@uol.com.br

Re: first message: SELECT FROM

From
"Jaime Casanova"
Date:
On Feb 2, 2008 12:36 PM, Aílsom F. Heringer <ailsom@gmail.com> wrote:
> Hi,
> This is my first message, and I need some help. I have just installed
> Postgresql 8.2. (Windows).
>
> At pgAdmin III Query, when I send SELECT * FROM USUARIOS, I get all
> columns correctly. But when I try to get only one column, SELECT senha
> FROM USUARIOS, I get the error message:
>
> ERROR: column "senha" does not exist
> SQL state: 42703
> Character: 8
>
> What is the problem ?
>

ERROR: column "senha" does not exist

I think is pretty obvious... maybe the name has upercase letters? if
that is the case you must use the name in double-quotes (")

maybe you can show us the table definition as shown by pgAdmin 3 for
more opinions...

--
regards,
Jaime Casanova

"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs and the universe trying
to produce bigger and better idiots.
So far, the universe is winning."
                                       Richard Cook

Re: first message: SELECT FROM

From
Tom Lane
Date:
"=?ISO-8859-1?Q?A=EDlsom_F._Heringer?=" <ailsom@gmail.com> writes:
> At pgAdmin III Query, when I send SELECT * FROM USUARIOS, I get all
> columns correctly. But when I try to get only one column, SELECT senha
> FROM USUARIOS, I get the error message:

> ERROR: column "senha" does not exist

Sounds like a case-sensitivity/quoting issue.  I suggest carefully
reading the rules for quoted and unquoted identifiers explained here:

http://www.postgresql.org/docs/8.2/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS

The executive summary is in the last line: "you are advised to always
quote a particular name or never quote it".  I think you probably
created the table using a quoted identifier for "senha", except with
some other capitalization than that.

            regards, tom lane

Re: first message: SELECT FROM

From
"Aílsom F. Heringer"
Date:
The column is defined as "Senha", but even when use "SELECT Senha FROM
Usuarios" i get the same error.

Aílsom



2008/2/2, Tom Lane <tgl@sss.pgh.pa.us>:
> "=?ISO-8859-1?Q?A=EDlsom_F._Heringer?=" <ailsom@gmail.com> writes:
> > At pgAdmin III Query, when I send SELECT * FROM USUARIOS, I get all
> > columns correctly. But when I try to get only one column, SELECT senha
> > FROM USUARIOS, I get the error message:
>
> > ERROR: column "senha" does not exist
>
> Sounds like a case-sensitivity/quoting issue.  I suggest carefully
> reading the rules for quoted and unquoted identifiers explained here:
>
> http://www.postgresql.org/docs/8.2/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
>
> The executive summary is in the last line: "you are advised to always
> quote a particular name or never quote it".  I think you probably
> created the table using a quoted identifier for "senha", except with
> some other capitalization than that.
>
>                         regards, tom lane
>


--
--
Aílsom F. Heringer
Rio de Janeiro, Brasil
ailsom@gmail.com
ailsom@uol.com.br

Re: first message: SELECT FROM

From
"A. Kretschmer"
Date:
am  Sat, dem 02.02.2008, um 15:54:59 -0200 mailte Aílsom F. Heringer folgendes:
> The column is defined as "Senha", but even when use "SELECT Senha FROM
> Usuarios" i get the same error.

select "Senha" from "Usuarios";

And, finally, please no top-posting.


Andreas
--
Andreas Kretschmer
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