strapi/packages/generators/app/lib/resources/templates/database-templates/mysql.template

module.exports = ({ env }) => ({
  connection: {
    client: 'mysql',
    connection: {
      host: env('DATABASE_HOST', '<%= connection.host %>'),
      port: env.int('DATABASE_PORT', <%= connection.port %>),
      database: env('DATABASE_NAME', '<%= connection.database %>'),
      user: env('DATABASE_USERNAME', '<%= connection.username %>'),
      password: env('DATABASE_PASSWORD', '<%= connection.password %>'),
      ssl: env.bool('DATABASE_SSL', <%= connection.ssl %>),
    },
  },
});