怎么從Oracle數據庫中獲得表字段的注釋？

獲取表字段：?1234select*fromuser_tab_columnswhereTable_Name='用戶表'orderbycolumn_name獲取表注釋：?12345select*fromuser_tab_commentswhereTable_Name='用戶表'orderbyTable_Name獲取字段注釋：?123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475select*fromuser_col_commentswhereTable_Name='用戶