nested SQL statements code example
Example 1: NESTED QUERY SQL
SELECT column_name [, column_name ]
FROM table1 [, table2 ]
WHERE column_name OPERATOR
(SELECT column_name [, column_name ]
FROM table1 [, table2 ]
[WHERE])
Example 2: subquery in sql
SUBQUERY IS NESTED QUERY INSIDE A
SELECT, INSERT OR UPDATE METHODS.
OR INSIDE ANOTHER SUBQUERY