Re: Column does not exists?

On 03/26/2015 10:12 AM, "Leonardo M. Ramé" wrote:
> Ok, I have this table:
>
> CREATE TABLE sessions
> (
> "SESSIONID" integer NOT NULL,
> "SESSIONTIMESTAMP" character varying(45) NOT NULL,
> "SESSIONDATA" character varying(200) DEFAULT NULL::character varying,
> CONSTRAINT sessions_pkey PRIMARY KEY ("SESSIONID")
> )
>
> Now, when I do:
>
> DELETE From sessions WHERE SESSIONTIMESTAMP < '2010-01-01 10:02:02'
>
> I get:
>
> ERROR: column "sessiontimestamp" does not exist
> LINE 1: DELETE From sessions WHERE SESSIONTIMESTAMP < '2010-01-01 10...
> ^
> ********** Error **********
>
> ERROR: column "sessiontimestamp" does not exist
> SQL state: 42703
> Character: 28
>
> But if I do:
>
> DELETE From sessions WHERE "SESSIONTIMESTAMP" < '2010-01-01 10:02:02'
>
> It DOES work.
>
> Why the db doesn't recognize the name of the table without quotes?.

See here, bottom of 4.1.1. Identifiers and Key Words:

http://www.postgresql.org/docs/9.3/interactive/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
>
> Regards,

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com