Hi,
I tried to install phpopenchat but I can't create this table:
poc=> CREATE TABLE poc_user_account (
poc(> USER varchar(255) NOT NULL,
poc(> PASSWORD varchar(255),
poc(> CONFIRM_CODE char(32),
poc(> DISABLED int NOT NULL DEFAULT '0',
poc(> KICKED int NOT NULL DEFAULT '0',
poc(> PASSWORD_NEW varchar(255),
poc(> PRIMARY KEY (USER)
poc(> );
ERROR: syntax error at or near "USER" at character 35
After searching a while what's wrong I renamed column USER to USER2 and
now I can create the table! I don't see a reason why column name USER
isn't allowed?!
I am running Postgres 7.4.2 on Linux.
Thanks!
Thomas
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Thomas Mueller <ne************@tmueller.com> wrote: Hi,
I tried to install phpopenchat but I can't create this table:
poc=> CREATE TABLE poc_user_account ( poc(> USER varchar(255) NOT NULL, poc(> PASSWORD varchar(255), poc(> CONFIRM_CODE char(32), poc(> DISABLED int NOT NULL DEFAULT '0', poc(> KICKED int NOT NULL DEFAULT '0', poc(> PASSWORD_NEW varchar(255), poc(> PRIMARY KEY (USER) poc(> ); ERROR: syntax error at or near "USER" at character 35
After searching a while what's wrong I renamed column USER to USER2 and now I can create the table! I don't see a reason why column name USER isn't allowed?!
Because it's a reserved word in PostgreSQL's SQL syntax.
You can also work around this by enclosing the name in quotes. This also
makes the column name case-sensitive though, so you need to be sure that
_all_ processes/code/whatever that accesses this table can properly address
the column with the proper case. i.e. if you use "USER" and later try to
SELECT user FROM poc_user_account, you'll get an error that the column
doesn't exist. In fact, even if you do SELECT USER FROM poc_user_account,
you'll still get an error, as Postgres will fold the name to lower case.
Once you've got a case-sensitive name, you must do SELECT "USER" FROM ...
--
Bill Moran
Potential Technologies http://www.potentialtech.com
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TIP 1: subscribe and unsubscribe commands go to ma*******@postgresql.org Hi,
I tried to install phpopenchat but I can't create this table:
poc=> CREATE TABLE poc_user_account ( poc(> USER varchar(255) NOT NULL, poc(> PASSWORD varchar(255), poc(> CONFIRM_CODE char(32), poc(> DISABLED int NOT NULL DEFAULT '0', poc(> KICKED int NOT NULL DEFAULT '0', poc(> PASSWORD_NEW varchar(255), poc(> PRIMARY KEY (USER) poc(> ); ERROR: syntax error at or near "USER" at character 35
After searching a while what's wrong I renamed column USER to USER2 and now I can create the table! I don't see a reason why column name USER isn't allowed?!
USER is a reserved word in SQL (at least in 92, and I think they only
added to the list in later versions) which technically makes it
unavailable as a non-quoted identifier. If you were careful about
quoting, you could use "USER" (note the double quotes) for creating it and
all references to it.
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On Wed, Jul 07, 2004 at 05:17:08PM -0400, Bill Moran wrote: Thomas Mueller <ne************@tmueller.com> wrote: now I can create the table! I don't see a reason why column name USER isn't allowed?!
Because it's a reserved word in PostgreSQL's SQL syntax.
You can also work around this by enclosing the name in quotes. This also makes the column name case-sensitive though, so you need to be sure that _all_ processes/code/whatever that accesses this table can properly address the column with the proper case. i.e. if you use "USER" and later try to SELECT user FROM poc_user_account, you'll get an error that the column doesn't exist.
Even worse, you don't get an error at all, but you get your current connection
username:
alberto=# select user from pg_database;
current_user
--------------
alberto
alberto
alberto
(3 rows)
--
-----------------------
Alberto Cabello Sánchez al*****@unex.es
Servicio de Informática
924 289 351
-----------------------
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On Thu, 8 Jul 2004, Alberto Cabello Sanchez wrote: On Wed, Jul 07, 2004 at 05:17:08PM -0400, Bill Moran wrote: Thomas Mueller <ne************@tmueller.com> wrote: now I can create the table! I don't see a reason why column name USER isn't allowed?!
Because it's a reserved word in PostgreSQL's SQL syntax.
You can also work around this by enclosing the name in quotes. This also makes the column name case-sensitive though, so you need to be sure that _all_ processes/code/whatever that accesses this table can properly address the column with the proper case. i.e. if you use "USER" and later try to SELECT user FROM poc_user_account, you'll get an error that the column doesn't exist.
Even worse, you don't get an error at all, but you get your current connection username:
alberto=# select user from pg_database; current_user -------------- alberto alberto alberto (3 rows)
Right, because USER effectively means CURRENT_USER (as per the rules in
SQL92 6.2/SQL99 6.3). The choice of having USER be a reserved word which
basically means the same thing as CURRENT_USER by the committee doing the
SQL spec was unfortunate.
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On Thu, 2004-07-08 at 09:35, Stephan Szabo wrote: On Thu, 8 Jul 2004, Alberto Cabello Sanchez wrote: On Wed, Jul 07, 2004 at 05:17:08PM -0400, Bill Moran wrote: Thomas Mueller <ne************@tmueller.com> wrote: > now I can create the table! I don't see a reason why column name USER > isn't allowed?!
Because it's a reserved word in PostgreSQL's SQL syntax.
You can also work around this by enclosing the name in quotes. This also makes the column name case-sensitive though, so you need to be sure that _all_ processes/code/whatever that accesses this table can properly address the column with the proper case. i.e. if you use "USER" and later try to SELECT user FROM poc_user_account, you'll get an error that the column doesn't exist.
Even worse, you don't get an error at all, but you get your current connection username:
alberto=# select user from pg_database; current_user -------------- alberto alberto alberto (3 rows)
Right, because USER effectively means CURRENT_USER (as per the rules in SQL92 6.2/SQL99 6.3). The choice of having USER be a reserved word which basically means the same thing as CURRENT_USER by the committee doing the SQL spec was unfortunate.
That said, the choice of USER as a column name in phpopenchat is even
more unfortunate. Someone should open a bug report with them and site
the sql spec so that they change the column to a friendlier (and more
compliant) name.
Robert Treat
--
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
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> I tried to install phpopenchat but I can't create this table: poc=> CREATE TABLE poc_user_account ( poc(> USER varchar(255) NOT NULL,
Thanks everyone!
Creating the database with quoted USER column worked fine, now I have to
resolve the other problems.
I'd like to see one application developed for MySQL that works with any
other database out of the box ...
Thomas
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