CREATE TABLE project_related_updates(
    project_id INTEGER NOT NULL,
    update_id INTEGER NOT NULL,
    project_only INTEGER,
    merkled INTEGER NOT NULL DEFAULT 0,
    CONSTRAINT pru_merkled CHECK (
        merkled = 0 OR merkled = 1
    ),
    CONSTRAINT pru_project_only CHECK (
        project_only = 1 OR project_only IS NULL
    ),
    UNIQUE(update_id,project_id) ON CONFLICT IGNORE
    FOREIGN KEY(update_id) REFERENCES updates(id) ON DELETE CASCADE,
    FOREIGN KEY(project_id) REFERENCES projects(id) ON DELETE CASCADE
);