When is it necessary to qualify a column name while joining tables in MySQL?
A) It is necessary when the tables have identical column names.
B) It is necessary when the tables have different column names.
C) It is never necessary when you join tables in MySQL.
D) It is necessary every time you join tables in MySQL.

Question

Quizplus · Accepted Answer

Qualifying a column name is necessary when joining tables that have identical column names to avoid ambiguity. This tells the database system specifically which table's column you are referring to.

When Is It Necessary to Qualify a Column Name While