sql工具：一条sql语句，查询sql server某个指定表的所有列及其属性
SELECTC.name as [字段名],T.name as [字段类型],convert(bit,C.IsNullable)as [可否为空],convert(bit,case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=c.id and name in (SELECT name FROM sysindexes WHERE indid in(SELECT indid FROM sysindexkeys WHERE id = c.id AND colid=c.colid))) then 1 else 0 end) as [是否主键],convert(bit,COLUMNPROPERTY(c.id,c.name,'IsIdentity')) as [自动增长],C.Length as [占用字节] ,COLUMNPROPERTY(C.id,C.name,'PRECISION') as [长度],isnull(COLUMNPROPERTY(c.id,c.name,'Scale'),0) as [小数位数],ISNULL(CM.text,'') as [默认值],isnull(ETP.value,'') AS [字段描述]--,ROW_NUMBER() OVER (ORDER BY C.name) AS FROM syscolumns CINNER JOIN systypes T ON C.xusertype = T.xusertype left JOIN sys.extended_properties ETP ONETP.major_id = c.id AND ETP.minor_id = C.colid AND ETP.name ='MS_Description' left join syscomments CM on C.cdefault=CM.idWHERE C.id = object_id('tblAddressBook')(运行环境：sql server 2008) 以上是中文作为列名，以下是英文作为列名，注意: 把 tblAddressBook 换成你要查询的表名就OK了
SELECTC.name as FieldName,T.name as TypeName,C.IsNullable,case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=c.id and name in (SELECT name FROM sysindexes WHERE indid in(SELECT indid FROM sysindexkeys WHERE id = c.id AND colid=c.colid))) then 1 else 0 end as IsPrimary,COLUMNPROPERTY(c.id,c.name,'IsIdentity') as IsIdentity,C.Length as ByteLength ,COLUMNPROPERTY(C.id,C.name,'PRECISION') as StringLength,isnull(COLUMNPROPERTY(c.id,c.name,'Scale'),0) as DotPrecision,ISNULL(CM.text,'') as DefaultValue,isnull(ETP.value,'') AS --,ROW_NUMBER() OVER (ORDER BY C.name) AS FROM syscolumns CINNER JOIN systypes T ON C.xusertype = T.xusertype left JOIN sys.extended_properties ETP ONETP.major_id = c.id AND ETP.minor_id = C.colid AND ETP.name ='MS_Description' left join syscomments CM on C.cdefault=CM.idWHERE C.id = object_id('tblAddressBook')
附查询图片一张：
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