SQL SERVER添加表注释、字段注释
--取表注释
SELECT A.name AS table_name, B.name AS column_name, C.value AS column_description FROM sys.tables A INNER JOIN sys.columns B ON B.object_id = A.object_id LEFT JOIN sys.extended_properties C ON C.major_id = B.object_id AND C.minor_id = B.column_id WHERE A.name = 't_dept';
--取视图注释
SELECT A.name AS table_name, B.name AS column_name, C.value AS column_description
FROM sys.views A
INNER JOIN sys.columns B ON B.object_id = A.object_id
LEFT JOIN sys.extended_properties C ON C.major_id = B.object_id AND C.minor_id = B.column_id
WHERE A.name = 'v_name';
select * from sys.extended_properties where major_id=66815300 --为字段添加注释 --Eg. execute sp_addextendedproperty 'MS_Description','字段备注信息','user','dbo','table','字段所属的表名','column','添加注释的字段名'; execute sp_addextendedproperty 'MS_Description','add by liyc. 诊断类别码','user','dbo','table','DiagRecord','column','DiagTypeCode'; --修改字段注释 execute sp_updateextendedproperty 'MS_Description','add by liyc.','user','dbo','table','DiagRecord','column','DiagTypeCode'; --删除字段注释 execute sp_dropextendedproperty 'MS_Description','user','dbo','table','DiagRecord','column','DiagTypeCode'; -- 添加表注释 execute sp_addextendedproperty 'MS_Description','诊断记录文件','user','dbo','table','DiagRecord',null,null; -- 修改表注释 execute sp_updateextendedproperty 'MS_Description','诊断记录文件1','user','dbo','table','DiagRecord',null,null; -- 删除表注释 execute sp_dropextendedproperty 'MS_Description','user','dbo','table','DiagRecord',null,null;
查询文档
SELECT 表名=case when a.colorder=1 then d.name else '' end, 表说明=case when a.colorder=1 then isnull(f.value,'') else '' end, 字段序号=a.colorder, 字段名=a.name, 标识=case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end, 主键=case when exists(SELECT 1 FROM sysobjects where xtype='PK' and name in ( SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid ))) then '√' else '' end, 类型=b.name, 占用字节数=a.length, 长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'), 小数位数=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0), 允许空=case when a.isnullable=1 then '√'else '' end, 默认值=isnull(e.text,''), 字段说明=isnull(g.[value],'') FROM syscolumns a left join systypes b on a.xusertype=b.xusertype inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties' left join syscomments e on a.cdefault=e.id left join sys.extended_properties g on a.id=g.major_id and a.colid=g.minor_id left join sys.extended_properties f on d.id=f.major_id and f.minor_id=0 where d.name='TableName' --如果只查询指定表,加上此条件 order by a.id,a.colorder
--sql server 查询所有表名及注释 SELECT DISTINCT d.name, f.value FROM syscolumns a LEFT JOIN systypes b ON a.xusertype= b.xusertype INNER JOIN sysobjects d ON a.id= d.id AND d.xtype= 'U' AND d.name<> 'dtproperties' LEFT JOIN syscomments e ON a.cdefault= e.id LEFT JOIN sys.extended_properties g ON a.id= G.major_id AND a.colid= g.minor_id LEFT JOIN sys.extended_properties f ON d.id= f.major_id AND f.minor_id= 0
查询数据库中所有表的注释
select a.TABLE_NAME,b.Description from (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE') a join ( SELECT name AS TableName, value AS Description, major_id FROM sys.extended_properties WHERE minor_id = 0 AND class = 1) b on b.major_id = OBJECT_ID(a.TABLE_NAME) order by TABLE_NAME
查询数据库文档
declare @tablename_mask varchar(50) set @tablename_mask='表名' declare @tableid int print @tablename_mask select @tableid=id from sysobjects where type in ('U' ,'S') and name like @tablename_mask print @tableid select ROW_NUMBER() OVER(order by a.name) 序号,b.column_description 名称,a.name 属性,a.typeName 类型,a.typeLen 描述 from ( select C.name,UPPER(D.name) typeName, (case when (D.name='nvarchar' or D.name='varchar') and C.length=-1 then 'max' when D.name='nvarchar' then cast((C.length/2) as varchar(50)) when D.name='varchar' then cast(C.length as varchar(50)) else '' end) typeLen from syscolumns C join sys.types D on C.xtype=D.system_type_id where C.id = @tableid and C.type <> 37 and D.name<>'sysname' ) a join (SELECT A.name AS table_name, B.name AS column_name, C.value AS column_description FROM sys.tables A INNER JOIN sys.columns B ON B.object_id = A.object_id LEFT JOIN sys.extended_properties C ON C.major_id = B.object_id AND C.minor_id = B.column_id WHERE A.name = '表名') b on a.name=b.column_name
下面为另一种写法:
SELECT c.name AS COLUMN_NAME, -- 字段名 t.name AS DATA_TYPE, -- 字段类型 c.max_length AS CHARACTER_MAXIMUM_LENGTH, -- 字段长度 ep.value AS COLUMN_DESCRIPTION -- 字段说明/注释 FROM sys.columns c JOIN sys.types t ON c.user_type_id = t.user_type_id LEFT JOIN sys.extended_properties ep ON c.object_id = ep.major_id AND c.column_id = ep.minor_id AND ep.name = 'MS_Description' WHERE c.object_id = OBJECT_ID('表名');
查看表名及注释
SELECT t.TABLE_SCHEMA, t.TABLE_NAME, ep.value AS TABLE_DESCRIPTION FROM INFORMATION_SCHEMA.TABLES t LEFT JOIN sys.extended_properties ep ON ep.major_id = OBJECT_ID(t.TABLE_SCHEMA + '.' + t.TABLE_NAME) AND ep.minor_id = 0 AND ep.name = 'MS_Description' WHERE t.TABLE_TYPE = 'BASE TABLE'
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