How to match CSV file header names with already saved names for file in table

[#1]

I have saved column names for file in the hive table which is as below

I have CSV file as below

A|B|C

1|2|3

4|5|6

and I want to match the columns of CSV file with the Column names saved in the table.

The result I want is:

if the file has the same column names as stored in the table to match then do some processing else exit and throw an email of mismatch schema.