CREATE UNIQUE INDEX IF NOT EXISTS inbox_tenant_command_idx ON inbox(tenant_id, command_id);

CREATE TABLE IF NOT EXISTS mq_command_receipts (
    tenant_id TEXT NOT NULL,
    command_id TEXT NOT NULL,
    response_id TEXT NOT NULL UNIQUE,
    PRIMARY KEY (tenant_id, command_id),
    FOREIGN KEY (tenant_id, command_id) REFERENCES inbox(tenant_id, command_id),
    FOREIGN KEY (response_id) REFERENCES outbox(event_id)
);