摘要：Search the file named "*.ORA" or "tnsnames.ora" in the folders that are related to Oracle. Append the TNS key to tnsnames.ora. 阅读全文

摘要：Oracle中：distinct会影响rownum的约束条件。可能是先rownum, 然后再distinct的。select manager_id,manager_name from ( SELECT a.manager_id, a.manager_name, (sysdate-perf_score.max_perf_track_rec (c.track_record_id,'Q'))... 阅读全文