NESTED QUERY SQL
snippet in sql

NESTED QUERY SQL

user8903

SELECT column_name [, column_name ]
FROM   table1 [, table2 ]
WHERE  column_name OPERATOR
   (SELECT column_name [, column_name ]
   FROM table1 [, table2 ]
   [WHERE])

subquery in sql

user8068

SUBQUERY IS NESTED QUERY INSIDE A 
SELECT, INSERT OR UPDATE METHODS.
OR INSIDE ANOTHER SUBQUERY