Thread: problem with trigger function
I'm having a problem with a trigger function. I've been googling for over an hour, with no luck with my specific problem.
I get this error:ERROR: missing FROM-clause entry for table "new"
LINE 1: insert into metric_double_values_201203 values (NEW.metricID...
^
QUERY: insert into metric_double_values_201203 values (NEW.metricID, NEW.sourceID, NEW.timestamp, NEW.value, NEW.datetimeval)
CONTEXT: PL/pgSQL function metric_double_insert_func() line 8 at EXECUTE statement
CREATE OR REPLACE FUNCTION metric_double_insert_func()
RETURNS TRIGGER AS $$
DECLARE insert_sql text;
BEGIN
insert_sql:='insert into metric_double_values_' || to_char(NEW.datetimeval,'YYYYMM') || ' values (NEW.metricID, NEW.sourceID, NEW.timestamp, NEW.value, NEW.datetimeval)';
EXECUTE insert_sql using NEW;
RETURN NULL;
END;
$$
LANGUAGE plpgsql;
DROP TRIGGER 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();
ERROR: missing FROM-clause entry for table "new"
LINE 1: insert into metric_double_values_201203 values (NEW.*)
^
QUERY: insert into metric_double_values_201203 values (NEW.*)
CONTEXT: PL/pgSQL function metric_double_insert_func() line 7 at EXECUTE statement
Any help appreciated.
Thanks,Susan
On 03/06/2014 04:08 PM, Susan Cassidy wrote: > I'm having a problem with a trigger function. I've been googling for > over an hour, with no luck with my specific problem. > > I get this error: > ERROR: missing FROM-clause entry for table "new" > LINE 1: insert into metric_double_values_201203 values (NEW.metricID... > ^ > QUERY: insert into metric_double_values_201203 values (NEW.metricID, > NEW.sourceID, NEW.timestamp, NEW.value, NEW.datetimeval) > CONTEXT: PL/pgSQL function metric_double_insert_func() line 8 at > EXECUTE statement > > > From this trigger function: > > CREATE OR REPLACE FUNCTION metric_double_insert_func() > RETURNS TRIGGER AS $$ > DECLARE insert_sql text; > BEGIN > insert_sql:='insert into metric_double_values_' || > to_char(NEW.datetimeval,'YYYYMM') || ' values (NEW.metricID, > NEW.sourceID, NEW.timestamp, NEW.value, NEW.datetimeval)'; > EXECUTE insert_sql using NEW; > RETURN NULL; > END; > $$ > LANGUAGE plpgsql; The basic problem is here: insert_sql:='insert into metric_double_values_' || to_char(NEW.datetimeval,'YYYYMM') || ' values (NEW.metricID, NEW.sourceID, NEW.timestamp, NEW.value, NEW.datetimeval)'; in particular: ' values (NEW.metricID,...' You are quoting the NEW values which Postgres then interprets as values coming from the table new as new.metric_id, etc. You need to use the parameter placeholders,$1, $2, etc. See here for some examples: http://www.postgresql.org/docs/9.3/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN 40.5.4. Executing Dynamic Commands > > DROP TRIGGER 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(); > > > This was an attempt at eliminating the error I got when trying to insert > with values (NEW.*) using NEW: > ERROR: missing FROM-clause entry for table "new" > LINE 1: insert into metric_double_values_201203 values (NEW.*) > ^ > QUERY: insert into metric_double_values_201203 values (NEW.*) > CONTEXT: PL/pgSQL function metric_double_insert_func() line 7 at > EXECUTE statement > > I don't know what from clause it is talking about > > This is a trigger for inserting rows into the proper partition table > based on date. > > Any help appreciated. > > Thanks, > Susan -- Adrian Klaver adrian.klaver@aklaver.com