数据库的备注型数据怎么输入

SELECT column_name,column_comment FROM information_schema. COLUMNSWHERE table_schema = 'staq' AND table_name = 'jfjy_user_exam' AND table_name = 'jfjy_users_group'

1、创建表的时候，添加表名备注和字段备注。

2、表创建完成添加表名备注和字段备注。

3、查看备注信息。

ALTER TABLE table_name COMMENT='这是表的注释'

1.给表加注释：

ALTER TABLE table_name COMMENT='这是表的注释'

2.给列加注释：

ALTER table table_name MODIFY `column_name` datetime DEFAULT NULL COMMENT '这是字段的注释'

表不能备注，表中的字段可以备注，下面的代码可以读取表中字段的备注

Declare @tblName nvarchar(1000)

set @tblName='表名'

declare @TblID int

set @TblID=(select [object_id] as tblID from sys.all_objects where [type] ='U' and [name]<>'dtproperties' and [name]=@tblName)

select syscolumns.name as ColumnName,

systypes.name as ColumnType,

syscolumns.length as ColumnLength,

(SELECT [value] FROM ::fn_listextendedproperty(NULL, 'user', 'dbo', 'table', object_name(@TblID), 'column', syscolumns.name) as e where e.name='MS_Description') as ColumnDescription

from sysColumns

left join sysTypes on sysTypes.xtype = sysColumns.xtype and sysTypes.xusertype = sysColumns.xusertype

left join sysobjects on sysobjects.id = syscolumns.cdefault and sysobjects.type='D'

left join syscomments on syscomments.id = sysobjects.id

where syscolumns.id=@TblID

表名那换成你想读取的表就行

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