日期:2014-05-18 浏览次数:20552 次
--> 生成测试数据表:tb IF NOT OBJECT_ID('[tb]') IS NULL DROP TABLE [tb] GO CREATE TABLE [tb]([id] INT,[parentid] INT,[categoryname] NVARCHAR(10)) INSERT [tb] SELECT 1,0,'test1' UNION ALL SELECT 2,0,'test2' UNION ALL SELECT 3,1,'test1.1' UNION ALL SELECT 4,2,'test2.1' UNION ALL SELECT 5,3,'test1.1.1' UNION ALL SELECT 6,1,'test1.2' GO --SELECT * FROM [tb] -->SQL查询如下: ;WITH T AS ( SELECT *,CAST(ID AS VARBINARY(MAX)) AS px FROM tb AS A WHERE NOT EXISTS(SELECT * FROM tb WHERE id=A.[parentid]) UNION ALL SELECT A.*,CAST(B.px+CAST(A.ID AS VARBINARY) AS VARBINARY(MAX)) FROM tb AS A JOIN T AS B ON A.[parentid]=B.id ) SELECT [id],[parentid],[categoryname] FROM T ORDER BY px /* id parentid categoryname ----------- ----------- ------------ 1 0 test1 3 1 test1.1 5 3 test1.1.1 6 1 test1.2 2 0 test2 4 2 test2.1 BOM节点排序,看你的数据应该是这个意思,稍微修改即可
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--实例1: --> 生成测试数据表:tb IF NOT OBJECT_ID('[tb]') IS NULL DROP TABLE [tb] GO CREATE TABLE [tb]([id] INT,[code] NVARCHAR(10),[pid] INT,[name] NVARCHAR(10)) INSERT [tb] SELECT 1,'01',0,N'服装' UNION ALL SELECT 2,'01',1,N'男装' UNION ALL SELECT 3,'01',2,N'西装' UNION ALL SELECT 4,'01',3,N'全毛' UNION ALL SELECT 5,'02',3,N'化纤' UNION ALL SELECT 6,'02',2,N'休闲装' UNION ALL SELECT 7,'02',1,N'女装' UNION ALL SELECT 8,'01',7,N'套装' UNION ALL SELECT 9,'02',7,N'职业装' UNION ALL SELECT 10,'03',7,N'休闲装' UNION ALL SELECT 11,'04',7,N'西装' UNION ALL SELECT 12,'01',11,N'全毛' UNION ALL SELECT 13,'02',11,N'化纤' UNION ALL SELECT 14,'05',7,N'休闲装' GO --SELECT * FROM [tb] -->SQL查询如下: ;WITH T AS ( SELECT CAST(CODE AS VARCHAR(20)) AS CODE,*, CAST(ID AS VARBINARY(MAX)) AS px FROM tb AS A WHERE NOT EXISTS(SELECT * FROM tb WHERE id=A.pid) UNION ALL SELECT CAST(B.CODE+A.CODE AS VARCHAR(20)),A.*, CAST(B.px+CAST(A.ID AS VARBINARY) AS VARBINARY(MAX)) FROM tb AS A JOIN T AS B ON A.pid=B.id ) SELECT Code,Name FROM T ORDER BY px /* Code Name -------------------- ---------- 01 服装 0101 男装 010101 西装 01010101 全毛 01010102 化纤 010102 休闲装 0102 女装 010201 套装 010202 职业装 010203 休闲装 010204 西装 01020401 全毛 01020402 化纤 010205 休闲装 (14 行受影响) */ --实例2: --> 生成测试数据表:tb IF NOT OBJECT_ID('[tb]') IS NULL DROP TABLE [tb] GO CREATE TABLE [tb]([id] INT,[parentid] INT,[categoryname] NVARCHAR(10)) INSERT [tb] SELECT 1,0,'test1' UNION ALL SELECT 2,0,'test2' UNION ALL SELECT 3,1,'test1.1' UNION ALL SELECT 4,2,'test2.1' UNION ALL SELECT 5,3,'test1.1.1' UNION ALL SELECT 6,1,'test1.2' GO --SELECT * FROM [tb] -->SQL查询如下: ;WITH T AS ( SELECT *,CAST(ID AS VARBINARY(MAX)) AS px FROM tb AS A WHERE NOT EXISTS(SELECT * FROM tb WHERE id=A.[parentid]) UNION ALL SELECT A.*,CAST(B.px+CAST(A.ID AS VARBINARY) AS VARBINARY(MAX)) FROM tb AS A JOIN T AS B ON A.[parentid]=B.id ) SELECT [id],[parentid],[categoryname] FROM T ORDER BY px /* id parentid categoryname ----------- ----------- ------------ 1 0 test1 3 1 test1.1 5 3 test1.1.1 6 1 test1.2 2 0 test2 4 2 test2.1 (6 行受影响) */