sqlserver表结构查询

SELECT CASE WHEN a.colorder = 1 THEN d.name ELSE '' END AS 表名,      CASE WHEN a.colorder = 1 THEN isnull(f.value,'') ELSE '' END AS 表说明,      a.colorder AS 字段序号,a.name AS 字段名,CASE WHEN COLUMNPROPERTY(a.id,      a.name,'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识,      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 AS 主键,b.name AS 类型,a.length AS 占用字节数,      COLUMNPROPERTY(a.id,a.name,'PRECISION') AS 长度,      ISNULL(COLUMNPROPERTY(a.id,'Scale'),0) AS 小数位数,      CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END AS 允许空,ISNULL(e.text,'')       AS 默认值,ISNULL(g.[value],'') AS 字段说明FROM syscolumns a LEFT OUTER JOIN      systypes b ON a.xtype = b.xusertype INNER JOIN      sysobjects d ON a.id = d.id AND d.xtype = 'U' AND       d.name <> 'dtproperties' LEFT OUTER JOIN      syscomments e ON a.cdefault = e.id LEFT OUTER JOIN      sysproperties g ON a.id = g.id AND a.colid = g.smallid LEFT OUTER JOIN      sysproperties f ON d.id = f.id AND f.smallid = 0ORDER BY a.id,a.colorder