查询数据库表结构

SELECT  表名 = CASE WHEN a.colorder = 1 THEN d.name ELSE '' END ,
         字段说明 = ISNULL(g.[value], '') ,
         字段名 = a.name ,
         类型 = CASE WHEN b.name IN ( 'varchar', 'nvarchar' )
                   THEN b.name + '('
                        + CAST(COLUMNPROPERTY(a.id, a.name, 'PRECISION') AS VARCHAR(4))
                        + ')'
                   WHEN b.name = 'decimal'
                   THEN b.name + '('
                        + CAST(COLUMNPROPERTY(a.id, a.name, 'PRECISION') AS VARCHAR(4))
                        + ','
                        + CAST(COLUMNPROPERTY(a.id, a.name, 'Scale') AS VARCHAR(4))
                        + ')'
                   ELSE b.name
              END
FROM syscolumns a    -- 列名
     LEFT JOIN systypes b ON a.xusertype = b.xusertype    -- 类型
     INNER JOIN sysobjects d ON a.id = d.id AND d.xtype = 'U' AND d.name <> 'dtproperties'    --筛选用户对象
     --LEFT JOIN syscomments e ON a.cdefault = e.id    --默认值
     LEFT JOIN sys.extended_properties g ON a.id = g.major_id AND a.colid = g.minor_id    --扩展属性(字段说明)
     --LEFT JOIN sys.extended_properties f ON d.id = f.major_id AND f.minor_id = 0        --扩展属性(表说明)
     WHERE d.name = 'j_depot'    --可修改表名
ORDER BY a.id , a.colorder