sql/sqlite/translate_message_group_subscriptions.sql
CREATE TABLE /*_*/translate_message_group_subscriptions (
tmgs_user_id INTEGER UNSIGNED NOT NULL,
tmgs_group BLOB NOT NULL,
PRIMARY KEY(tmgs_group, tmgs_user_id)
);
CREATE INDEX translate_tmgs_user_id ON /*_*/translate_message_group_subscriptions (tmgs_user_id);