ALTER TABLE replies MODIFY COLUMN ts timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP;
ALTER TABLE messages MODIFY COLUMN ts timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP;
ALTER TABLE messages MODIFY COLUMN updated timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP;
ALTER TABLE messages_txt MODIFY COLUMN updated_at timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP;
ALTER TABLE users MODIFY COLUMN lastmessage timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP;