mysql怎么查看字段的备注

show full columns from table.A;

select 	t.TABLE_NAME
	,t.TABLE_COMMENT
	,c.COLUMN_NAME
	,c.COLUMN_TYPE
	,c.COLUMN_COMMENT 
from 
information_schema.`COLUMNS` c 
,information_schema.`TABLES` t 
where 	 c.TABLE_NAME = t.TABLE_NAME
and	 t.TABLE_SCHEMA = 'database' --更换为自己查询的数据库名称
;