ySQL [futs]> create index idx_bid_user_id_contract on futs.co_new_trade(bid_user_id,contract_type,created_at);
ERROR 8214 (HY000): Cancelled DDL job
MySQL [futs]> create index idx_ask_user_id_contract on futs.co_new_trade(ask_user_id,contract_type,created_at);
ERROR 8214 (HY000): Cancelled DDL job