Question

The return value from operations returning a row count is ______________

(a) $rc

(b) $rv

(c) $rows

(d) $ary

This question was posed to me during an online interview.

My doubt is from Perl DBI Overview in division MySQL Programs Using Perl DBI and PHP of MySQL

Answer 1

Right choice is (c) $rows

Explanation: The Perl Non-handle variable ‘$ary’ is an array or list representing a row of values returned by a query. ‘$rc’ returns code from operations that return true or false. ‘$rv’ returns value from operations that return an integer. ‘$rows’ returns value from operations that return a row count.