Re: another trigger problem - Mailing list pgsql-general

On 03/07/2014 04:06 PM, Adrian Klaver wrote:

On 03/07/2014 02:48 PM, Susan Cassidy wrote:

I have another problem with a slightly different trigger.  It's very
weird, because it is exactly the same as the first trigger, that now
works, except for the table name.

The error is:

ERROR:  query string argument of EXECUTE is null
CONTEXT:  PL/pgSQL function metric_int_insert_func() line 5 at EXECUTE
statement


The trigger is:

CREATE OR REPLACE FUNCTION metric_int_insert_func()
RETURNS TRIGGER AS $$
   DECLARE insert_sql text;
BEGIN
     insert_sql:='insert into metric_int_values_' ||
to_char(NEW.datetimeval,'YYYYMM') || ' values ($1.*)';
     EXECUTE insert_sql using NEW;
     RETURN NULL;
END;
$$
LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS insert_metric_int_insert_trigger on
metric_int_values;
CREATE TRIGGER insert_metric_int_insert_trigger
         BEFORE INSERT ON metric_int_values
         FOR EACH ROW EXECUTE PROCEDURE metric_int_insert_func();


which is exactly the same as this one that works:
CREATE OR REPLACE FUNCTION metric_double_insert_func()
RETURNS TRIGGER AS $$
   DECLARE insert_sql text;
BEGIN
     insert_sql:='insert into metric_double_values_' ||
to_char(NEW.datetimeval,'YYYYMM') || ' values ($1.*)';
     EXECUTE insert_sql using NEW;
     RETURN NULL;
END;
$$
LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS insert_metric_double_insert_trigger on
metric_double_values;
CREATE TRIGGER insert_metric_double_insert_trigger
         BEFORE INSERT ON metric_double_values
         FOR EACH ROW EXECUTE PROCEDURE metric_double_insert_func();


I can't seem to figure it out.  I've retyped some of the lines, in case
there is a weird character somewhere, but they got there with a vi yank
and put, so that's not likely.

Anyone have any ideas?

Try dropping the function and then creating it, instead of just the create and replace. I have seen issues in the past with a stale copy of a function causing a problem.

Thanks,
Susan

Is the datetimeval always non-null?



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