Not enough values selecting into a table value - sql

Question

Here is the code:
create type emp_high_sal_ot is object
(
full_name varchar2(64),
phone_number varchar(20),
salary number(10,2)
);
create type emp_high_sal_nt is table of emp_high_sal_ot;
and the following function doesn't compile:
create or replace function get_highest_paid_emps return emp_high_sal_nt
AS
rec emp_high_sal_nt;
avg_sal NUMBER;
begin
SELECT AVG(salary)
INTO avg_sal
FROM employees;
SELECT last_name || ' ' || first_name, phone_number, salary
INTO rec
FROM employees
WHERE salary > avg_sal;
return rec;
end;
It says:
PL/SQL: ORA-00947: not enough values
Why is that?

Answer 1

Why is that?
You are trying to put 3 values (and multiple rows) into a single variable.
Use BULK COLLECT INTO and wrap the values in the object type:
create or replace function get_highest_paid_emps return emp_high_sal_nt
AS
rec emp_high_sal_nt;
avg_sal NUMBER;
begin
SELECT AVG(salary)
INTO avg_sal
FROM employees;
SELECT emp_high_sal_ot(
last_name || ' ' || first_name,
phone_number,
salary
)
BULK COLLECT INTO rec
FROM employees
WHERE salary > avg_sal;
return rec;
end;
/
Given the sample data:
CREATE TABLE employees (first_name, last_name, phone_number, salary) AS
SELECT 'Alice', 'Abbot', '0123456', 100000 FROM DUAL UNION ALL
SELECT 'Betty', 'Baron', '1111111', 250000 FROM DUAL UNION ALL
SELECT 'Carol', 'Chris', '9876543', 300000 FROM DUAL;
Then:
SELECT * FROM TABLE(get_highest_paid_emps());
Outputs:
FULL_NAME
PHONE_NUMBER
SALARY
Baron Betty
1111111
250000
Chris Carol
9876543
300000
db<>fiddle here