SqlServer2008中便捷查看表字段备注类型默认值的方法

来源：互联网发布：绿豆网络团队编辑：程序博客网时间：2024/05/18 01:01

可快速查看使用sys.sp_addextendedproperty创建的字段备注，及字段类型、默认值、是否可空等信息

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'备注具体信息' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'表名', @level2type=N'COLUMN',@level2name=N'列名'

创建如下存储过程：

-- =============================================-- Author:<Author,shujudeliu,Name>-- Create date: <Create Date,2017-07-18 17:40:00,>-- Description:<Description,查询表描述及字段备注信息,>-- =============================================CREATE PROCEDURE [dbo].[proc_desc](@table_name   varchar(100)-- 表名)ASBEGINSET NOCOUNT ON;select 类别,表名or字段名,描述,字段类型,是否自增,是否可空,默认值 from (SELECT '表名' 类别,-1 column_id,tbs.name 表名or字段名,ds.value 描述,'' 字段类型,'' 是否自增,'' 是否可空,'' 默认值,1 rnFROM sys.extended_properties ds  LEFT JOIN sysobjects tbs ON ds.major_id=tbs.id  WHERE  ds.minor_id=0 and tbs.name=@table_nameunionSELECT '------' 类别,-1 column_id,'------------------------------------' 表名or字段名,'----------------------------------------------------------' 描述,'-----------------' 字段类型,'-----------' 是否自增,'-----------' 是否可空,'-------------' 默认值,2 rnunionSELECT'列名' 类别,c.column_id,C.name 表名or字段名,s.value 描述,字段类型 = T.name + CASE T.user_type_id WHEN 41 THEN '('+CAST(C.scale AS VARCHAR) +')'     -- timeWHEN 42 THEN '('+CAST(C.scale AS VARCHAR) +')'                                      -- datetime2WHEN 43 THEN '('+CAST(C.scale AS VARCHAR) +')'                                      -- datetimeoffsetWHEN 106 THEN '('+CAST(C.precision  AS VARCHAR)+','+ CAST(C.scale AS VARCHAR) +')'  -- decimalWHEN 108 THEN '('+CAST(C.precision  AS VARCHAR)+','+ CAST(C.scale AS VARCHAR) +')'  -- numericWHEN 165 THEN '('+ISNULL(CAST(NULLIF(C.max_length,-1) AS VARCHAR),'MAX') +')'       -- varbinaryWHEN 167 THEN '('+ISNULL(CAST(NULLIF(C.max_length,-1) AS VARCHAR),'MAX') +')'       -- varcharWHEN 173 THEN '('+ISNULL(CAST(NULLIF(C.max_length,-1) AS VARCHAR),'MAX') +')'       -- binaryWHEN 175 THEN '('+ISNULL(CAST(NULLIF(C.max_length,-1) AS VARCHAR),'MAX') +')'       -- charWHEN 231 THEN '('+ISNULL(CAST(NULLIF(C.max_length,-1)/2 AS VARCHAR),'MAX') +')'     -- nvarchar(该字段校检根据实际情况)WHEN 239 THEN '('+ISNULL(CAST(NULLIF(C.max_length,-1) AS VARCHAR),'MAX') +')'       -- ncharELSE ''END,cast(C.is_identity as varchar(10)) 是否自增,cast(C.is_nullable as varchar(10)) 是否可空,默认值 = ISNULL(STUFF(LEFT(D.definition,LEN(D.definition)-1),1,1,''),'') ,3 rnFROM sys.columns CINNER JOIN sys.types T ON C.user_type_id = T.user_type_id LEFT JOIN sys.default_constraints D ON D.[object_id] =C.default_object_id AND D.parent_object_id = C.[object_id] AND D.parent_column_id = C.column_id left join (select major_id,minor_id,value from sys.extended_properties) s on s.major_id = c.object_id and s.minor_id = c.column_idWHERE C.[object_id] = OBJECT_ID(@table_name)) s order by column_id,rnEND

使用方法：

exec proc_desc 表名

示例：

阅读全文

0 0