1 --查询表的字段说明 2 --use dataname -----数据库名 3 SELECT t.[name] AS 表名,c.[name] AS 字段名,cast(ep.[value] 4 as varchar(100)) AS [字段说明] 5 FROM sys.tables AS t 6 INNER JOIN sys.columns 7 AS c ON t.object_id = c.object_id 8 LEFT JOIN sys.extended_properties AS ep 9 ON ep.major_id = c.object_id AND ep.minor_id = c.column_id WHERE ep.class =1 10 AND t.name='CN_PG'--------表名 11 ------------------------------------- 12 --快速查看表结构（比较全面的） 13 SELECT CASE WHEN col.colorder = 1 THEN obj.name 14 ELSE '' 15 END AS 表名, 16 col.colorder AS 序号 , 17 col.name AS 列名 , 18 ISNULL(ep.[value], '') AS 列说明 , 19 t.name AS 数据类型 , 20 col.length AS 长度 , 21 ISNULL(COLUMNPROPERTY(col.id, col.name, 'Scale'), 0) AS 小数位数 , 22 CASE WHEN COLUMNPROPERTY(col.id, col.name, 'IsIdentity') = 1 THEN '√' 23 ELSE '' 24 END AS 标识 , 25 CASE WHEN EXISTS ( SELECT 1 26 FROM dbo.sysindexes si 27 INNER JOIN dbo.sysindexkeys sik ON si.id = sik.id 28 AND si.indid = sik.indid 29 INNER JOIN dbo.syscolumns sc ON sc.id = sik.id 30 AND sc.colid = sik.colid 31 INNER JOIN dbo.sysobjects so ON so.name = si.name 32 AND so.xtype = 'PK' 33 WHERE sc.id = col.id 34 AND sc.colid = col.colid ) THEN '√' 35 ELSE '' 36 END AS 主键 , 37 CASE WHEN col.isnullable = 1 THEN '√' 38 ELSE '' 39 END AS 允许空 , 40 ISNULL(comm.text, '') AS 默认值 41 FROM dbo.syscolumns col 42 LEFT JOIN dbo.systypes t ON col.xtype = t.xusertype 43 inner JOIN dbo.sysobjects obj ON col.id = obj.id 44 AND obj.xtype = 'U' 45 AND obj.status >= 0 46 LEFT JOIN dbo.syscomments comm ON col.cdefault = comm.id 47 LEFT JOIN sys.extended_properties ep ON col.id = ep.major_id 48 AND col.colid = ep.minor_id 49 AND ep.name = 'MS_Description' 50 LEFT JOIN sys.extended_properties epTwo ON obj.id = epTwo.major_id 51 AND epTwo.minor_id = 0 52 AND epTwo.name = 'MS_Description' 53 WHERE obj.name = 'CN_PG'--表名 54 ORDER BY col.colorder ;
引用来源：https://www.cnblogs.com/accumulater/p/6155241.html