postgres=#
postgres=# -- Name: "raise_test" () Type: FUNCTION Owner: postgres
postgres=# CREATE FUNCTION "raise_test" () RETURNS integer AS "
postgres"# DECLARE
postgres"#
postgres"# -- Declare an integer variable for testing.
postgres"#
postgres"# an_integer INTEGER = 1;
postgres"#
postgres"# BEGIN
postgres"#
postgres"# -- Raise a debug level message.
postgres"#
postgres"# RAISE DEBUG ""The raise_test() function began."";
postgres"#
postgres"# an_integer = an_integer + 1;
postgres"#
postgres"# -- Raise a notice stating that the an_integer
postgres"# -- variable was changed, then raise another notice
postgres"# -- stating its new value.
postgres"#
postgres"# RAISE NOTICE ""Variable an_integer was changed."";
postgres"# RAISE NOTICE ""Variable an_integer value is now %."",an_integer;
postgres"#
postgres"# -- Raise an exception.
postgres"#
postgres"# RAISE EXCEPTION ""Variable % changed. Aborting transaction."",an_integer;
postgres"#
postgres"# END;
postgres"# " LANGUAGE "plpgsql";
CREATE FUNCTION
postgres=#
postgres=# select raise_test();
NOTICE: Variable an_integer was changed.
NOTICE: Variable an_integer value is now 2.
ERROR: Variable 2 changed. Aborting transaction.
postgres=#
postgres=#
