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[数据库]SqlServer字段说明查询


SELECT t.[name] AS 表名,c.[name] AS 字段名,cast(ep.[value]  as varchar(100)) AS [字段说明] FROM sys.tables AS t INNER JOIN sys.columns  AS c ON t.object_id = c.object_id  LEFT JOIN sys.extended_properties AS ep  ON ep.major_id = c.object_id AND ep.minor_id = c.column_id WHERE ep.class =1  AND t.name='TableName'

 

--快速查看表结构(比较全面的)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 col    LEFT JOIN dbo.systypes t ON col.xtype = t.xusertype    inner JOIN dbo.sysobjects obj ON col.id = obj.id                     AND obj.xtype = 'U'                     AND obj.status >= 0    LEFT JOIN dbo.syscomments comm ON col.cdefault = comm.id    LEFT 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 = 'TableName'--表名ORDER BY col.colorder ;