Refactoring: SQL Executor, Column's Structure Manipulation

by Supun Nakandala for phpMyAdmin

The goal of this project is to refactor the SQL executor and Column's structure manipulation code. To improve the readability, reduce the complexity, and to improve the maintainability I am suggesting to refactor the SQL executor and Column's structure manipulation code using better approaches. The code will be refactored according to various code refactoring techniques mainly focusing on componentization and extract method.