Oracle 執行計劃

explain plan for 後面接所執行的sql語句，select * from table(dbms_xplan.display);顯示執行計劃。sql 執行語句：ide explain plan for select * from t_pay_jnl  where to_char(sysdate-7200/(24*60*60),'YYYYMMDDhh24miss') < txn_tm  

>>阅读原文<<