SQL 查询表结构

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 = 'TABLE_NAME'--表名    ORDER BY col.colorder ;