八、按顺序查询oracle中字段名、注释

SELECT 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_TAB_COLS.COLUMN_ID    as 列序号,
       user_col_comments.comments as 备注
  FROM USER_TAB_COLS
 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
   and USER_TAB_COLS.TABLE_NAME = upper('continfo')
   order by  USER_TAB_COLS.COLUMN_ID;