MySQL - How to add JSON column type

 I use Doctrine ORM with Symfony framework. 

Doctrine entities have the capability to handle JSON type columns, automatically converting data from an array to JSON and vice versa. This means they can effortlessly perform the conversion of data from an array format to JSON and vice versa, offering a convenient and dynamic approach. This proves exceptionally useful in scenarios such as storing and managing various settings within the database.

Hence, to create a new column in a table with a JSON type, use the following syntax:

settings LONGTEXT DEFAULT NULL COMMENT '(DC2Type:json)'

This concise yet powerful declaration ensures that the column is set up to handle JSON data effectively.

For adding a new column to an existing 'tblcontacts' table, execute the following SQL query:

ALTER TABLE tblcontacts ADD COLUMN settings LONGTEXT DEFAULT NULL COMMENT '(DC2Type:json)';

The critical aspect here is the "COMMENT '(DC2Type:json)'". This specific comment serves as a directive to Doctrine, informing it that the designated column should be treated as a JSON column, thus ensuring the appropriate handling of JSON data within the context of your application.