mysql查看所有表備註字段備註

1. 查看所有表表名和備註

SELECT TABLE_NAME,
       table_comment
FROM `information_schema`.tables
WHERE table_schema='數據庫名'

2. 查詢某張表的字段和備註

select column_name,
column_comment 
from information_schema.columns 
where table_name ='表名'
and table_schema='數據庫名'

4. 查看所有字段名稱和備註

SELECT a.table_name,
       a.column_name,
       a.column_comment
FROM information_schema.columns a,
     `information_schema`.tables b
WHERE a.table_name = b.table_name
  AND a.table_schema = b.table_schema
  AND a.table_schema='數據庫名'
ORDER BY a.table_name,
         a.ordinal_position;