Hi List;
I am building a function in the SQL (PostgreSQL), so I will be able to call
this function using a SELECT query. Inside the body of this function, I was
need to do the following but not able to know how:
I have a SELECT statement (inside the function script itself), and I need to
know the number of the returned rows of that select query, if it is one row or
2 or 3 , ... How? In which paramter I will be able to check this?
For example, I have the following function:
CREATE OR REPLACE FUNCTION get_credit_time(text, text)
RETURNS integer AS
$BODY$
DECLARE
BEGIN
rate numberic(9,4);
SELECT rate from voiptariff where id= 9;
IF num_rows ==1 THEN -- As example, but I am asking how to do it?
.............
ELSE
.............
END IF
END
$BODY$
LANGUAGE 'sql' IMMUTABLE
COST 100;
ALTER FUNCTION get_bool(text) OWNER TO gkradius;
In this function, I need to check the number of returned rows of the statement:
SELECT rate from voiptariff where id= 9; because based on it I am going to
build if statment, How?
Any help?
Regards
Bilal
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