--------------------------------------------原  mysql中檢視所有表、表字段、表註釋、欄位註釋----------------------------------

-----查詢所有表註釋

SELECT TABLE_NAME, TABLE_COMMENT 

FROM INFORMATION_SCHEMA.Tables

WHERE table_schema ='dasoujia' 

---------------

INFORMATION_SCHEMA.Tables:
TABLE_SCHEMA，TABLE_NAME，CREATE_TIME，UPDATE_TIME，CHECK_TIME，TABLE_COMMENT

 
--------------------------------------------------------------------------------------------------------------------------------
檢視所有欄位和欄位註釋

select 
    COLUMN_NAME，
    COLUMN_COMMENT 
from 
    INFORMATION_SCHEMA.Columns
where 
    table_name = '表名'  
    and table_schema='資料庫名'
-------------------------------
INFORMATION_SCHEMA.Columns:
TABLE_SCHEMA，TABLE_NAME，COLUMN_NAME, COLUMN_TYPE, COLUMN_KEY