mh:工时 mhtype:工时类型(6种)
字段:userid mhtype mh
001 1 5
001 1 3
001 2 4
001 3 9
002 5 5
002 6 7
002 3 4
002 3 9
要求统计出每个人每一类工时的总合
结果要求如下格式
userid mhtype1 mhtype2 mhtype3 mhtype4 mhtype5 mhtype6 allmh
001 8 4 9 0 0 0 21
002 0 0 13 0 5 7 25
-------------------
create
table
lk4(
userid mediumint(3) unsigned zerofill
not
null
,
mhtype
int
not
null
,
mh
int
not
null
);
insert
into
lk4
values
(001,1,5),
(001,1,3),
(001,2,4),
(001,3,9),
(002,5,5),
(002,6,7),
(002,3,4),
(002,3,9);
select
userid,
sum
((
case
when
mhtype=1
then
mh
else
0
end
))
as
'mhtype1'
,
sum
((
case
when
mhtype=2
then
mh
else
0
end
))
as
'mhtype2'
,
sum
((
case
when
mhtype=3
then
mh
else
0
end
))
as
'mhtype3'
,
sum
((
case
when
mhtype=4
then
mh
else
0
end
))
as
'mhtype4'
,
sum
((
case
when
mhtype=5
then
mh
else
0
end
))
as
'mhtype5'
,
sum
((
case
when
mhtype=6
then
mh
else
0
end
))
as
'mhtype6'
,
sum
(mh)
as
'allmh'
from
lk4
group
by
userid;
结果:
+--------+---------+---------+---------+---------+---------+---------+-------+
| userid | mhtype1 | mhtype2 | mhtype3 | mhtype4 | mhtype5 | mhtype6 | allmh |
+--------+---------+---------+---------+---------+---------+---------+-------+
| 001 | 8 | 4 | 9 | 0 | 0 | 0 | 21 |
| 002 | 0 | 0 | 13 | 0 | 5 | 7 | 25 |
+--------+---------+---------+---------+---------+---------+---------+-------+
2 rows in set (0.00 sec)
*******************************
数据结构如下
id name area
01 a 河北
02 b 山东
03 c 河北
04 d 陕西
05 e 河北
06 f 山东
也即每个用户都有id,name,area
现要求如下:
按地区聚合并统计用户数、显示各用户详细情况
大概类似于下面的结果:
地区 总用户数 详细用户
河北 3 (01,a),(03,c),(05,e)
山东 2 (02,b),(06,f)
陕西 1 (04,d)
select area,count(*),group_concat('(',id,',',name,')')
from tb
group by area
************
这是源数据,根据不同的adminid,算出每个adminid有多少条数据,并且state为0的有几条,为1的有几条
返回结果是这样的:
adminid total state0 state1
1 100 90 10
2 111 55 56
total是state的总数,state0是state=0的数量,state1是state=1的数量,adminid是adminid
然后将以下得到的数据全部插入表2内:
表2字段为:
adminid s_total s_state0 s_state1
insert into tb2
select adminid,count(*) as total,
count(case when state=0 then 1 end) as state0,
count(case when state=1 then 1 end) as state1
from tb
group by adminid
***********
一。以产品编码为分类进行数量的汇总
1
2
3
|
select 产品编码, sum (购买数量) from 表结构 group by 产品编码 |
二。在汇总的基础上,我要对每个产品编码按发货地区进行分类汇总。
1
2
3
|
select 产品编码,发货地区, sum (购买数量) from 表结构 group by 产品编码,发货地区 |