ORACLE數據庫導出表，字段名，長度，類型，字段註釋，表註釋語句

 --數據庫導出表，字段名，長度，類型，字段註釋，表註釋語句
 SELECT T1.TABLE_NAME 英文表名,
       T1.COLUMN_NAME  字段名,
       T1.DATA_TYPE || '(' || T1.DATA_LENGTH || ')'  字段類型及長度,
       T2.COMMENTS  字段註釋,
    t3.COMMENTS  表註釋
  FROM USER_TAB_COLS T1, USER_COL_COMMENTS T2,user_tab_comments t3
 WHERE T1.TABLE_NAME = T2.TABLE_NAME
   AND T1.COLUMN_NAME = T2.COLUMN_NAME  and  t3.TABLE_NAME = t1.TABLE_NAME and    t1.TABLE_NAME LIKE 'GM_%'

 

 

 

--用這個好，能夠查所有的

 SELECT
 c.table_name 英文表名 ,
 t.COMMENTS 中文表名稱,
 cc.COLUMN_NAME 字段名,
 cc.COMMENTS 字段註釋 ,
 c.DATA_TYPE || '(' || c.DATA_LENGTH || ')' 字段類型及長度
FROM
 dba_tab_columns c
 LEFT JOIN dba_col_comments cc ON c.table_name = cc.table_name
 AND c.column_name = cc.column_name
 LEFT JOIN dba_tab_comments t ON c.table_name = t.table_name
WHERE
 c.OWNER = 'S_GMJXK'
 AND c.TABLE_NAME LIKE 'GM_%'
ORDER BY
 c.table_name;