Обсуждение: Issue with passing NULL for function parameter

I have wriiten following simple function in postgresql

CREATE OR REPLACE FUNCTION "MySchema".add_user(p_name character varying, p_=
email1 character varying, p_email2 character varying)
  RETURNS bigint AS
$BODY$
DECLARE
                userId bigint;
BEGIN
                INSERT INTO "MySchema"."User"("Name" ,"EMail1" , "EMail2")
                                VALUES ($1 , $2, $3) ;

                Select CURRVAL('"MySchema".user_seq_userid') into userId;

                return userid;
END;
$BODY$
  LANGUAGE plpgsql VOLATILE STRICT

Function works absoolutely fine if I provide values for all three parameter=
s. Record gets inserted too.

But if I pass NULL for say last parameter, using  SELECT "MySchema".add_use=
r('A' , 'A', NULL)
function does not do anything and return zero.
No error is shown. But record is not inserted in table.
All columns in table can have NULL value.

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On 03.11.2011 13:32, Archana Sachin Ghag wrote:
> I have wriiten following simple function in postgresql
>
> CREATE OR REPLACE FUNCTION "MySchema".add_user(p_name character varying, p_email1 character varying, p_email2
charactervarying) 
>    RETURNS bigint AS
> $BODY$
> DECLARE
>                  userId bigint;
> BEGIN
>                  INSERT INTO "MySchema"."User"("Name" ,"EMail1" , "EMail2")
>                                  VALUES ($1 , $2, $3) ;
>
>                  Select CURRVAL('"MySchema".user_seq_userid') into userId;
>
>                  return userid;
> END;
> $BODY$
>    LANGUAGE plpgsql VOLATILE STRICT
>
> Function works absoolutely fine if I provide values for all three parameters. Record gets inserted too.
>
> But if I pass NULL for say last parameter, using  SELECT "MySchema".add_user('A' , 'A', NULL)
> function does not do anything and return zero.

Yeah. That's what STRICT means.

http://www.postgresql.org/docs/9.1/static/sql-createfunction.html

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   EnterpriseDB   http://www.enterprisedb.com