参考:
/*
标题:查询指定节点及其所有子节点的函数
作者:爱新觉罗.毓华(十八年风雨,守得冰山雪莲花开)
时间:2008-05-12
地点:广东深圳
*/create table tb(id varchar(3) , pid varchar(3) , name varchar(10))
insert into tb values('001' , null , '广东省')
insert into tb values('002' , '001' , '广州市')
insert into tb values('003' , '001' , '深圳市')
insert into tb values('004' , '002' , '天河区')
insert into tb values('005' , '003' , '罗湖区')
insert into tb values('006' , '003' , '福田区')
insert into tb values('007' , '003' , '宝安区')
insert into tb values('008' , '007' , '西乡镇')
insert into tb values('009' , '007' , '龙华镇')
insert into tb values('010' , '007' , '松岗镇')
go--查询指定节点及其所有子节点的函数
create function f_cid(@ID varchar(3)) returns @t_level table(id varchar(3) , level int)
as
begin
declare @level int
set @level = 1
insert into @t_level select @id , @level
while @@ROWCOUNT > 0
begin
set @level = @level + 1
insert into @t_level select a.id , @level
from tb a , @t_Level b
where a.pid = b.id and b.level = @level - 1
end
return
end
go--调用函数查询001(广东省)及其所有子节点
select a.* from tb a , f_cid('001') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
001 NULL 广东省
002 001 广州市
003 001 深圳市
004 002 天河区
005 003 罗湖区
006 003 福田区
007 003 宝安区
008 007 西乡镇
009 007 龙华镇
010 007 松岗镇(所影响的行数为 10 行)
*/--调用函数查询002(广州市)及其所有子节点
select a.* from tb a , f_cid('002') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
002 001 广州市
004 002 天河区(所影响的行数为 2 行)
*/--调用函数查询003(深圳市)及其所有子节点
select a.* from tb a , f_cid('003') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
003 001 深圳市
005 003 罗湖区
006 003 福田区
007 003 宝安区
008 007 西乡镇
009 007 龙华镇
010 007 松岗镇(所影响的行数为 7 行)
*/drop table tb
drop function f_cid
/*
标题:查询指定节点及其所有子节点的函数
作者:爱新觉罗.毓华(十八年风雨,守得冰山雪莲花开)
时间:2008-05-12
地点:广东深圳
*/create table tb(id varchar(3) , pid varchar(3) , name varchar(10))
insert into tb values('001' , null , '广东省')
insert into tb values('002' , '001' , '广州市')
insert into tb values('003' , '001' , '深圳市')
insert into tb values('004' , '002' , '天河区')
insert into tb values('005' , '003' , '罗湖区')
insert into tb values('006' , '003' , '福田区')
insert into tb values('007' , '003' , '宝安区')
insert into tb values('008' , '007' , '西乡镇')
insert into tb values('009' , '007' , '龙华镇')
insert into tb values('010' , '007' , '松岗镇')
go--查询指定节点及其所有子节点的函数
create function f_cid(@ID varchar(3)) returns @t_level table(id varchar(3) , level int)
as
begin
declare @level int
set @level = 1
insert into @t_level select @id , @level
while @@ROWCOUNT > 0
begin
set @level = @level + 1
insert into @t_level select a.id , @level
from tb a , @t_Level b
where a.pid = b.id and b.level = @level - 1
end
return
end
go--调用函数查询001(广东省)及其所有子节点
select a.* from tb a , f_cid('001') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
001 NULL 广东省
002 001 广州市
003 001 深圳市
004 002 天河区
005 003 罗湖区
006 003 福田区
007 003 宝安区
008 007 西乡镇
009 007 龙华镇
010 007 松岗镇(所影响的行数为 10 行)
*/--调用函数查询002(广州市)及其所有子节点
select a.* from tb a , f_cid('002') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
002 001 广州市
004 002 天河区(所影响的行数为 2 行)
*/--调用函数查询003(深圳市)及其所有子节点
select a.* from tb a , f_cid('003') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
003 001 深圳市
005 003 罗湖区
006 003 福田区
007 003 宝安区
008 007 西乡镇
009 007 龙华镇
010 007 松岗镇(所影响的行数为 7 行)
*/drop table tb
drop function f_cid
--http://blog.csdn.net/wlzd3636
--关于人事软件中的员工岗位调整
--员工岗位表
if object_id(N'jobcode','U') is not null
drop table jobcode;
create table jobcode
(id smallint identity(1,1) ,
jobcode char(5) not null,
jobname varchar(20) not null,
superiorjobcode char(5) not null
)
--生成测试数据
insert into jobcode(jobcode,jobname,superiorjobcode)
select jobcode='hrp01',jobname=N'人事总监',superiorjobcode=''
union all
select 'hrp02',N'人事副总监','hrp01'
union all
select 'hrp03',N'人事经理','hrp02'
union all
select 'hrp04',N'idc人事','hrp03'
union all
select 'hrp05',N'运维人事','hrp03'
union all
select 'omp01',N'运维总监',''
union all
select 'omp02',N'运维副总监','omp01'
union all
select 'omp03',N'运维经理','omp02'
union all
select 'omp04',N'运维idc主管','omp03'
union all
select 'omp05',N'运维db主管','omp03'
union all
select 'omp06',N'运维idc','omp04'
union all
select 'omp07',N'运维db','omp05'
go
--员工信息表
if object_id(N'jobinfo','U') is not null
drop table jobinfo;
create table jobinfo
(id int identity(1,1),
name varchar(20) not null,
jobcode char(5) not null,
senior varchar(20) not null
);
--生成测试数据
insert into jobinfo(name,jobcode,senior)
select name='hrjob_a', jobcode='hrp01',senior=''
union all
select 'hrjob_b','hrp02','hrjob_a'
union all
select 'hrjob_c','hrp03','hrjob_b'
union all
select 'hrjob_d','hrp04','hrjob_c'
union all
select 'hrjob_e','hrp05','hrjob_c'
union all
select 'ompjob_a','omp01',''
union all
select 'ompjob_b','omp02','ompjob_a'
union all
select 'ompjob_c','omp03','ompjob_b'
union all
select 'ompjob_d','omp04','ompjob_c'
union all
select 'ompjob_e','omp05','ompjob_c'
union all
select 'ompjob_f','omp06','ompjob_d'
union all
select 'ompjob_h','omp07','ompjob_e'
go--常用统计
返回每个员工下面的下级员工
--2005
if object_id(N'bom_job','IF') is not null
drop function bom_job;
create function bom_job(@name varchar(20)) returns table
as
return
with xwj
as
(select a.id,a.name,a.jobcode,a.senior,b.jobname
from jobinfo as a
inner join jobcode as b
on a.jobcode=b.jobcode
),
xwj2
as
(select id,name,jobcode,senior,@name as maxsenior,jobname from xwj where name=@name
union all
select b.id,a.name,a.jobcode,b.name as senior,maxsenior=@name,a.jobname from xwj as a inner join xwj2 as b on b.name=a.senior
)
select * from xwj2
go
--演示
select b.*
from jobinfo as a
cross apply
bom_job(a.name) as b
where a.name='hrjob_b'
/*
id name jobcode senior maxsenior jobname
----------- -------------------- ------- --------------------
2 hrjob_b hrp02 hrjob_a hrjob_b 人事副总监
2 hrjob_c hrp03 hrjob_b hrjob_b 人事经理
2 hrjob_d hrp04 hrjob_c hrjob_b idc人事
2 hrjob_e hrp05 hrjob_c hrjob_b 运维人事(4 行受影响)
*/
一般在薪筹软件里员工变动很大比如
人事总监hrjob_a 换岗到运维部当 运维经理
而运维经理ompjob_c 换岗到人事部门当人事总监则
原表里面的数据以及下属员工的上级数据都得变动
为了演示
从新生成了一个临时表
--生成数据
select * into #jobcode
from jobcode
select * into #jobinfo
from jobinfoselect * from #jobcodeselect *from #jobinfo
--思路
找出原先运维经理的一级下属,和直接上司
找出原先人事总监一级下属和直接上司--需一中间表select a.*,b.jobname
into #
from #jobinfo as a inner join #jobcode as b on a.jobcode=b.jobcodewith
xwj
as
(
select name,jobcode,senior,jobname,id=0 from # where name='ompjob_c'
union all
select a.name,a.jobcode,a.senior,a.jobname,b.id+1 from # as a inner join xwj as b on b.name=a.senior
)
,
xwj2
as
(select name,jobcode,senior,jobname,id=0 from # where name='ompjob_c'
union all
select a.name,a.jobcode,a.senior,a.jobname,b.id-1 from # as a inner join xwj2 as b on a.name=b.senior
)
,
xwj3
as
(select * from xwj
union
select * from xwj2
)
select * from xwj3 where id=1 or id=-1--分别update
建议:
--2005 xml
用xml 来存储一个部门或组的员工信息
declare @xml xml
select @xml=
'<company company_depart="尚瑞薪才">
<deport deportname="人事">
<job name="hrjob_a" jobcode="hrp01" senior="" jobname="人事总监"/>
</deport>
<deport deportname="运维">
<job name="ompjob_a" jobcode="omp01" senior="" jobname="运维总监"/>
</deport>
</company>'
select @xml eg:create table company_xml
(id smallint identity(1,1),
part xml not null
)insert into company_xml(part)
values(
cast('<company company_depart="尚瑞薪才">
<deport deportname="人事">
<job name="hrjob_a" jobcode="hrp01" senior="" jobname="人事总监"/>
<job name="hrjob_b" jobcode="hrp02" senior="hrjob_a" jobname="人事副总监"/>
</deport>
</company>' as xml)
)insert into company_xml(part)
values(
cast('<company company_depart="尚瑞薪才">
<deport deportname="运维">
<job name="ompjob_a" jobcode="omp01" senior="" jobname="运维总监"/>
<job name="ompjob_b" jobcode="omp02" senior="ompjob_b" jobname="运维副总监"/>
</deport>
</company>' as xml)
)
select company_depart,deportname,name,jobcode,senior,jobname from company_xml as a
cross apply
(
select t.c.value('@company_depart','sysname') as company_depart,
t.c.value('(deport/@deportname)[1]','sysname') as deportname
from a.part.nodes('/company') as t(c)
) as b
cross apply
( select * from
(select id,b.name,b.jobcode,b.senior,b.jobname
from
(select id,part.query('/company/deport/job') as job
from company_xml) as a
cross apply
(select
t.c.value('@name','sysname') as name,
t.c.value('@jobcode','sysname') as jobcode,
t.c.value('@senior','sysname') as senior,
t.c.value('@jobname','sysname') as jobname
from a.job.nodes('/job') as t(c)
)as b ) as c
where a.id=c.id
)as d如图:
优势:速度更快,存储空间小.