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Issue with passing NULL for function parameter

From: Archana Sachin Ghag <Archana_Ghag(at)infosys(dot)com>
To: "pgsql-bugs(at)postgresql(dot)org" <pgsql-bugs(at)postgresql(dot)org>
Subject: Issue with passing NULL for function parameter
Date: 2011-11-03 11:32:52
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
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
                userId bigint;
                INSERT INTO "MySchema"."User"("Name" ,"EMail1" , "EMail2")
                                VALUES ($1 , $2, $3) ;

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

                return userid;

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.
No error is shown. But record is not inserted in table.
All columns in table can have NULL value.

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Next:From: Heikki LinnakangasDate: 2011-11-03 11:40:38
Subject: Re: Issue with passing NULL for function parameter
Previous:From: Tom LaneDate: 2011-11-02 16:38:03
Subject: Re: BUG #6283: About the behavior of indexscan in case there are some NULL values.

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