先看添加与删除字段描述
EXEC sys.sp_addextendedproperty @name = N'MS_Description', --添加Type字段说明 @value = N'屏蔽类型对应值(类型对应Id)', @level0type = N'SCHEMA', @level0name = N'dbo', @level1type = N'TABLE', @level1name = N'ForbiddenType', @level2type = N'COLUMN', @level2name = N'TypeId' --删除表中列Type的描述属性： EXEC sp_dropextendedproperty 'MS_Description', 'SCHEMA', dbo, 'TABLE', 'ForbiddenType', 'COLUMN', TYPE
看下面的实例：
--创建表及描述信息 create table 表(a1 varchar(10),a2 char(2)) --为表添加描述信息 EXECUTE sp_addextendedproperty N'MS_Description', '人员信息表', N'user', N'dbo', N'table', N'表', NULL, NULL
EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'生成记录表' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'CrabRequisition'
GO--为字段a1添加描述信息 EXECUTE sp_addextendedproperty N'MS_Description', '姓名', N'user', N'dbo', N'table', N'表', N'column', N'a1'EXECUTE sp_addextendedproperty N'MS_Description', '测试', N'user', N'dbo', N'table', N'HR_Employees', N'column', N'test' --为字段a2添加描述信息 EXECUTE sp_addextendedproperty N'MS_Description', '性别', N'user', N'dbo', N'table', N'表', N'column', N'a2' --更新表中列a1的描述属性： EXEC sp_updateextendedproperty 'MS_Description','字段1','user',dbo,'table','表','column',a1 --删除表中列a1的描述属性： EXEC sp_dropextendedproperty 'MS_Description','user',dbo,'table','表','column',a1
--表描述 SELECT tbs.name 表名 ,ds.value 描述FROM sys.extended_properties dsLEFT JOIN sysobjects tbs ON ds.major_id = tbs.idWHERE ds.minor_id = 0AND tbs.name = 'Warrant_BaseInfo';--表名
--快速查看表结构 SELECT CASE WHEN col.colorder = 1 THEN obj.name ELSE '' END AS 表名 ,col.colorder AS 序号 ,col.name AS 列名 ,ISNULL(ep.[value], '') AS 列说明 ,t.name AS 数据类型 ,col.length AS 长度 ,ISNULL(COLUMNPROPERTY(col.id, col.name, 'Scale'), 0) AS 小数位数 ,CASE WHEN COLUMNPROPERTY(col.id, col.name, 'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识 ,CASE WHEN EXISTS (SELECT 1 FROM dbo.sysindexes si INNER JOIN dbo.sysindexkeys sik ON si.id = sik.id AND si.indid = sik.indid INNER JOIN dbo.syscolumns sc ON sc.id = sik.id AND sc.colid = sik.colid INNER JOIN dbo.sysobjects so ON so.name = si.name AND so.xtype = 'PK' WHERE sc.id = col.id AND sc.colid = col.colid) THEN '√' ELSE '' END AS 主键 ,CASE WHEN col.isnullable = 1 THEN '√' ELSE '' END AS 允许空 ,ISNULL(comm.text, '') AS 默认值FROM dbo.syscolumns colLEFT JOIN dbo.systypes t ON col.xtype = t.xusertypeINNER JOIN dbo.sysobjects obj ON col.id = obj.id AND obj.xtype = 'U' AND obj.status >= 0LEFT JOIN dbo.syscomments comm ON col.cdefault = comm.idLEFT JOIN sys.extended_properties ep ON col.id = ep.major_id AND col.colid = ep.minor_id AND ep.name = 'MS_Description'LEFT JOIN sys.extended_properties epTwo ON obj.id = epTwo.major_id AND epTwo.minor_id = 0 AND epTwo.name = 'MS_Description'WHERE obj.name = 'Ath_LoanApply_tbl'--表名 ORDER BY col.colorder;
IF (( SELECT COUNT(*) FROM fn_listextendedproperty('MS_Description', 'SCHEMA', N'dbo', 'TABLE', N'Fct_Order', 'COLUMN', N'Carrier'))> 0) EXEC sp_updateextendedproperty @name = N'MS_Description', @value = N'承运商', @level0type = 'SCHEMA', @level0name = N'dbo', @level1type = 'TABLE', @level1name = N'Fct_Order', @level2type = 'COLUMN', @level2name = N'Carrier' ELSE EXEC sp_addextendedproperty @name = N'MS_Description', @value = N'承运商', @level0type = 'SCHEMA', @level0name = N'dbo', @level1type = 'TABLE', @level1name = N'Fct_Order', @level2type = 'COLUMN', @level2name = N'Carrier'GO