Thread: how to use variables in postgresql

I HAVE A PROBLEM REGARDING DECLARATION/ INITIALISATION OF VARIABLES IN POSTGRESQL FUNCTIONS AND PROCEDURES. MY CODE PRESENTLY LOOKS LIKE
CREATE FUNCTION ins_into_std_values() RETURNS void AS
$BODY$
myflag CHAR(1) :='y';
dbms_output.put_line('enter the values sequentially');
loop
if myflag='n' then
exit;
end if;
insert into std_values
values('&tree_species_name','&location',&p,&c1,&c2,&q,&c3,&a,&b,&sp_gravity,&exp_factor);
commit;
dbms_output.put_line('records inserted sucessfully');
dbms_output.put_line('enter n to exit or y to continue entering values');
myflag:= '&y or n';
end loop;
commit;
$BODY$
LANGUAGE 'sql' VOLATILE;

BUT IT SHOWS ERROR AT INITIALISATION OF MYFLAG... CAN ANYONE TELL ME HOW TO DECLARE VARIABLES IN POSTGRESQL..

am  Thu, dem 21.06.2007, um 22:55:38 -0700 mailte saumya goel folgendes:
> I HAVE A PROBLEM REGARDING DECLARATION/ INITIALISATION OF VARIABLES IN
> POSTGRESQL FUNCTIONS AND PROCEDURES. MY CODE PRESENTLY LOOKS LIKE
> CREATE FUNCTION ins_into_std_values() RETURNS void AS
> $BODY$
> myflag CHAR(1) :='y';
> ...
> $BODY$
> LANGUAGE 'sql' VOLATILE;

Use another language, for instance plpgsql. Pure SQL hasn't variables.
http://www.postgresql.org/docs/current/interactive/plpgsql.html


Andreas
--
Andreas Kretschmer
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and use DECLARE ;-)

I HAVE A PROBLEM REGARDING DECLARATION/ INITIALISATION OF VARIABLES IN
POSTGRESQL FUNCTIONS AND PROCEDURES. MY CODE PRESENTLY LOOKS LIKE
CREATE FUNCTION ins_into_std_values() RETURNS void AS
$BODY$
 DECLARE
  myflag CHAR(1) :='y';
 BEGIN
  ...
 END
$BODY$
LANGUAGE 'plpgsql' VOLATILE;



A. Kretschmer schrieb:
> am  Thu, dem 21.06.2007, um 22:55:38 -0700 mailte saumya goel folgendes:
>
>> I HAVE A PROBLEM REGARDING DECLARATION/ INITIALISATION OF VARIABLES IN
>> POSTGRESQL FUNCTIONS AND PROCEDURES. MY CODE PRESENTLY LOOKS LIKE
>> CREATE FUNCTION ins_into_std_values() RETURNS void AS
>> $BODY$
>> myflag CHAR(1) :='y';
>> ...
>> $BODY$
>> LANGUAGE 'sql' VOLATILE;
>>
>
> Use another language, for instance plpgsql. Pure SQL hasn't variables.
> http://www.postgresql.org/docs/current/interactive/plpgsql.html
>
>
> Andreas
>