Question

What is the return value from operations returning a row count?

(a) $rc

(b) $rv

(c) $rows

(d) $ary

I had been asked this question in an online interview.

This interesting question is from Making Database Backups topic in division Database Maintenance, Backups and Replication of MySQL

Answer 1

Correct answer is (c) $rows

Easy 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.