新建表
create
table
`sys_user`
(`id`
varchar(32
)not
null
comment
'id'
,`name`
varchar(50
)not
null
comment
'登入名'
,`parent_id`
varchar(32
)default
null
comment
'父id'
,primary
key(
`id`),
key`fkl6y9o1vwawvu2w5o3pgioj3yd`
(`parent_id`),
constraint
`fkl6y9o1vwawvu2w5o3pgioj3yd`
foreign
key(
`parent_id`
)references
`sys_user`
(`id`))
engine
=innodb
default
charset
=utf8;
insert
into
`sys_user`
values
('0'
,'0'
,null);
insert
into
`sys_user`
values
('10'
,'10'
,'0');
insert
into
`sys_user`
values
('1001'
,'1001'
,'10');
insert
into
`sys_user`
values
('100101'
,'100101'
,'1001');
insert
into
`sys_user`
values
('10010101'
,'10010101'
,'100101');
insert
into
`sys_user`
values
('1001010101'
,'1001010101'
,'10010101');
insert
into
`sys_user`
values
('10010102'
,'10010102'
,'100101');
insert
into
`sys_user`
values
('100102'
,'100102'
,'1001');
insert
into
`sys_user`
values
('1002'
,'1002'
,'10');
insert
into
`sys_user`
values
('20'
,'20'
,'0');
insert
into
`sys_user`
values
('2001'
,'2001'
,'20');
insert
into
`sys_user`
values
('200101'
,'200101'
,'2001');
insert
into
`sys_user`
values
('20010101'
,'20010101'
,'200101');
insert
into
`sys_user`
values
('20010102'
,'20010102'
,'200101');
insert
into
`sys_user`
values
('200102'
,'200102'
,'2001');
insert
into
`sys_user`
values
('2002'
,'2002'
,'20');
insert
into
`sys_user`
values
('2003'
,'2003'
,'20');
insert
into
`sys_user`
values
('30'
,'30'
,'0');
insert
into
`sys_user`
values
('3001'
,'3001'
,'30');
insert
into
`sys_user`
values
('3002'
,'3002'
,'30');
insert
into
`sys_user`
values
('300201'
,'300201'
,'3002');
insert
into
`sys_user`
values
('300202'
,'300202'
,'3002');
insert
into
`sys_user`
values
('300203'
,'300203'
,'3002');
insert
into
`sys_user`
values
('30020301'
,'30020301'
,'300203'
);
drop
function
ifexists
`getchildlist`
;-- 不寫這一句有時候會報錯
setglobal log_bin_trust_function_creators=
true
;-- 建立函式
create
function
`getchildlist`
(rootid varchar
(100))
returns
varchar
(10000
)charset utf8
begin
-- 宣告變數
declare schildlist varchar
(10000);
declare schildtemp varchar
(1000);
-- 賦值
set schildtemp =rootid;
-- 具體實現邏輯
while schildtemp is
notnull
doif
(schildlist is
notnull
)then
set schildlist = concat(schildtemp,
',',schildlist)
;else
set schildlist = concat(schildtemp)
;endif;
-- 結果處理
select group_concat(id)
into schildtemp from sys_user where find_in_set(parent_id, schildtemp)
>0;
endwhile
;return schildlist;
end
select
*from sys_user where find_in_set(id,getchildlist(
'10'))
>
0
}使用自定義的mysql方言
key=
"hibernate.dialect"
>
com.demo.util.mylocaldialectprop
>
select u from user u where 1
=1 and find_in_set
(u.id,
getchildlist
(:userid)
)>
0
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