How to view field comments in mysql

mysql查看字段的备注的方法：直接执行【show full columns from table.A;】语句即可查看表及字段的备注。

1、单次查看表及字段备注

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show full columns from table.A;

2、查看整个数据库内查看数据库内所有的表名、表备注、字段名称、字段类型、字段备注

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
;

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