Subquery is query that appears within another SQL data manipulation statement - SQL Operations
Q. A subquery is a query (usually enclosed by parentheses) that appears within another SQL data manipulation statement.- Published on 09 Jul 15a. True
b. False
ANSWER: True
On evaluation a value or a set of values to the statement is provided by the subquery. The WHERE clause is used by the subqueries. An evaluation which is done once for each table is carried out by the subquery and a correlated subquery evaluates only once for for each of the rows.
