CREATE TABLE IF NOT EXISTS event_log (
    event_id    BIGSERIAL PRIMARY KEY,
    aggregate_id UUID NOT NULL,
    event_type  TEXT NOT NULL,
    payload     JSONB NOT NULL,
    occurred_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX idx_event_log_aggregate ON event_log (aggregate_id);
CREATE INDEX idx_event_log_type      ON event_log (event_type);
CREATE INDEX idx_event_log_occurred  ON event_log (occurred_at);