In c++, whenever we encounter an unexpected parameters, here is what we usually
did :
bool fun(int i) {
if (i < 0) {
return false;
}
}
void fun(int i) {
if (i < 0) {
throw std::exception("Invalid parameter");
}
}
void fun(int i) {
assert (i >= 0);
}
How about stored procedure? Now, I have the following stored procedure :
CREATE OR REPLACE FUNCTION insert_unit(text[], text[])
RETURNS unit AS
$BODY$DECLARE
_measurement_types ALIAS FOR $1;
_measurement_units ALIAS FOR $2;
_unit unit;
BEGIN
IF array_upper(_measurement_values, 1) != array_upper(_measurement_units,
1) THEN
RAISE NOTICE 'What I should do here to return early???';
END IF;
May I know what is the good practice to handle invalid parameters? I am using
libpq to interface with PostgreSQL.
Thanks and Regards
Yan Cheng CHEOK
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