Hi All,
I have written below trigger and applied on the table but it is giving syntax error when it gets invoked. Could you please help me what is wrong? I have given complete details here:
my trigger function:
CREATE OR REPLACE FUNCTION techdb_logtable_trigger()
RETURNS trigger AS
$BODY$
my $id = $_TD->{new}{'id'};
my $query = "
INSERT INTO log_table(id)
SELECT $1
EXCEPT SELECT id --> throwing error for here: syntax error at or near "EXCEPT"
FROM loggingtable
WHERE id = $1;";
if (exists($_SHARED{$query})) {
$plan = $_SHARED{$query};
} else {
$plan = spi_prepare($query, 'INTEGER');
$_SHARED{$query} = $plan;
}
spi_exec_prepared($plan, '$id');
$BODY$
LANGUAGE 'plperl' VOLATILE SECURITY DEFINER
Tables and trigger definitions:
CREATE TABLE techdb_table( id integer NOT NULL, info varchar NOT NULL );
CREATE TABLE log_table( id integer NOT NULL, txid integer NOT NULL DEFAULT txid_current(), txtime timestamp NOT NULL DEFAULT transaction_timestamp());
CREATE TRIGGER techdb_trigger
BEFORE INSERT ON techdb_table
FOR EACH ROW EXECUTE PROCEDURE techdb_logtable_trigger();
Error message:
Executing "insert into techdb_table values(1, 'test');" command gives below error.
ERROR: error from Perl function "techdb_logtable_trigger": syntax error at or near "EXCEPT" at line 15.
********** Error **********
ERROR: error from Perl function "techdb_logtable_trigger": syntax error at or near "EXCEPT" at line 15.
SQL state: XX000
Thanks,
Jignesh