CREATE TABLE IF NOT EXISTS team_invitations (
    id UUID NOT NULL PRIMARY KEY,
    team_id UUID NOT NULL REFERENCES teams(id) ON DELETE CASCADE,
    email TEXT NOT NULL,
    created_by UUID NOT NULL REFERENCES users(id) ON DELETE RESTRICT,
    verification_code TEXT NOT NULL,
    UNIQUE (team_id, email)
);
CREATE INDEX ON team_invitations(team_id);
CREATE INDEX ON team_invitations(verification_code);