SELECT USER_TAB_COLS.TABLE_NAME as 表名, UTC.COMMENTS as 表中文名, USER_TAB_COLS.COLUMN_ID as 列序号, USER_TAB_COLS.COLUMN_NAME as 列名, USER_TAB_COLS.DATA_TYPE as 数据类型, USER_TAB_COLS.DATA_LENGTH as 长度, USER_TAB_COLS.NULLABLE as 是否为空, user_col_comments.comments as 备注 FROM USER_TAB_COLS left join user_tab_comments utc on USER_TAB_COLS.TABLE_NAME = utc.table_name inner join user_col_comments on user_col_comments.TABLE_NAME = USER_TAB_COLS.TABLE_NAME and user_col_comments.COLUMN_NAME = USER_TAB_COLS.COLUMN_NAME order by 表名,列序号