Here is an example SQL that retrieves data from EMPLOYEE and DEPARTMENT table with the employee’s grade code in the GRADE table.
SELECT emp_id,
FROM employee,
and emp_dept<'D'
Here the...
How to Tune SQL with IN Subquery with Intersect for Oracle?
SELECT emp_id,
emp_name,
dpt_name
dpt_name
department
WHERE emp_dept = dpt_id
WHERE emp_dept = dpt_id
AND emp_grade IN (SELECT grd_id
FROM grade
WHERE grd_min_salary < 200000)
WHERE grd_min_salary < 200000)
Here the...
How to Tune SQL with IN Subquery with Intersect for Oracle?