message: billing modifier table
diff: @@ -90,6 +90,20 @@ CREATE TABLE IF NOT EXISTS project (
  private_key varchar(5000)
  );
  +CREATE TABLE IF NOT EXISTS billing_modifier (
  + id int NOT NULL auto_increment PRIMARY KEY,
  + group_id varchar(36),
  + weight int NOT NULL DEFAULT 0,
  + start_date datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  + end_date datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  + discount_fixed DECIMAL NULL DEFAULT 0.0,
  + discount_percentage FLOAT NULL DEFAULT 0.0,
  + extra_fixed DECIMAL NULL DEFAULT 0.0,
  + extra_percentage FLOAT NULL DEFAULT 0.0,
  + customer_comments text,
  + admin_comments text
  +);
  +
  CREATE TABLE IF NOT EXISTS environment (
  id int NOT NULL auto_increment PRIMARY KEY,
  name varchar(100),
  