sorry, but you misunderstand. this is the correct behavior of SQL.
It is part of the specification to do this.
--- On Wed, 7/3/13, Dev Kumkar <devdas.kumkar@gmail.com> wrote:
> From: Dev Kumkar <devdas.kumkar@gmail.com>
> Subject: [SQL] Unquoted column names fold to lower case
> To: pgsql-sql@postgresql.org
> Date: Wednesday, July 3, 2013, 5:12 AM
> Hello,
>
> All unquoted identifiers are assumed by PostgreSQL to be
> lower case by default. This means
> - SELECT MY_COLUMN FROM my_table
> - SELECT my_column FROM my_table
> - SELECT my_column as MY_COLUMN FROM my_table
>
> All refer to my_column and has column name in lowercase as
> my_column.
>
> If the aliases are in upper case and quoted then
> those are returned in upper case.
> - SELECT my_column as "MY_COLUMN" FROM
> my_table
>
>
> Is there any workaround to set the alias columns
> to be returned as upper case with adding quotes. Is there
> any connection level parameter to flip this behavior?
>
> Thanks in advance!
>
>
> Regards...
>
>