Mysql 如何重复值、计数和分组?
我试图创建一个交叉表,但我需要一种查询,重复cia确保的每个策略、业务和单位组 我的桌子:Mysql 如何重复值、计数和分组?,mysql,sql,Mysql,Sql,我试图创建一个交叉表,但我需要一种查询,重复cia确保的每个策略、业务和单位组 我的桌子: |policies| |id| |client| |policy_business_unit_id| |cia_ensure_id| |state| 1 MATT 1 1 0 2 STEVE 2
|policies|
|id| |client| |policy_business_unit_id| |cia_ensure_id| |state|
1 MATT 1 1 0
2 STEVE 2 1 0
3 BILL 3 2 0
4 LARRY 4 2 1
|policy_business_units|
|id| |name| |comercial_area_id|
1 LIFE 1
2 ROB 1
3 SECURE 1
4 ACCIDENT 1
|comercial_areas|
|id| |name|
1 BANK
2 HOSPITAL
|cia_ensures|
|id| |name|
1 SPRINT
2 APPLE
资料如下:
我正在尝试获取states=0,1,2 anc计数,如果它不存在或显示为0
Select
pb.name as BUSINESS_UNITS,
ce.name as CIA,ca.name as COMERCIAL_AREAS,
if (p.state = 0, count(p.state), 0) as state_0,
if (p.state = 1, count(p.state), 0) as state_1,
if (p.state = 2, count(p.state), 0) as state_2
From policies p
INNER JOIN policy_business_units pb ON pb.id = p.policy_business_unit_id
INNER JOIN comercial_areas ca ON ca.id = pb.comercial_area_id
INNER JOIN cia_ensures ce ON ce.id = p.cia_ensure_id
where ca.id=1
group by pb.id
我得到了这个结果:
BUSINESS_UNITS CIA COMERCIAL_AREAS STATE_0 STATE_1 STATUS_2
LIFE SPRINT BANK 1 0 0
ROB SPRINT BANK 1 0 0
SECURE APPLE BANK 1 0 0
ACCIDENT APPLE BANK 0 1 0
我的问题是:
我怎样才能得到这个结果
BUSINESS_UNITS CIA COMERCIAL_AREAS STATE_0 STATE_1 STATUS_2
LIFE SPRINT BANK 1 0 0
ROB SPRINT BANK 1 0 0
SECURE SPRINT BANK 0 0 0
ACCIDENT SPRINT BANK 0 0 0
LIFE APPLE BANK 0 0 0
ROB APPLE BANK 0 0 0
SECURE APPLE BANK 1 0 0
ACCIDENT APPLE BANK 0 1 0
我试过了
SELECT
COALESCE(SUM(CASE WHEN p.state = 0 THEN 1 ELSE 0 END),0) AS state_0,
COALESCE(SUM(CASE WHEN p.state = 1 THEN 1 ELSE 0 END),0) AS state_1,
COALESCE(SUM(CASE WHEN p.state = 2 THEN 1 ELSE 0 END),0) AS state_2,
count(*) AS total, p.policy_business_unit_id as units,
p.cia_ensure_id AS cias, p.state as status
FROM policies p
WHERE policy_business_unit_id IN (1)
AND cia_ensure_id IN (1,2)
GROUP BY cia_ensure_id
有人知道怎么做
请允许我感谢您的帮助。
谢谢。您必须使用子查询,然后应用
左外部联接
将它们联接在一起。顶部的IFNULL
部分确保由外部联接产生的不存在状态字段中填充的NULL
值转换为0
SET @id = 1;
SELECT sections.BUSINESS_UNITS, sections.CIA, sections.AREAS,
IFNULL(states.state_0, 0) AS STATE_0,
IFNULL(states.state_1, 0) AS STATE_1,
IFNULL(states.state_2, 0) AS STATE_2
FROM (
SELECT
pb.id AS bus_id, pb.name AS BUSINESS_UNITS,
ce.id AS cia_id, ce.name AS CIA,
ca.name AS AREAS
FROM policies p
INNER JOIN policy_business_units pb
ON pb.id = p.policy_business_unit_id
INNER JOIN comercial_areas ca
ON ca.id = pb.comercial_area_id
INNER JOIN cia_ensures ce
WHERE ca.id = @id
) AS sections
LEFT OUTER JOIN (
SELECT
pb.id AS bus_id,
ce.id AS cia_id,
if (p.state = 0, 1, 0) AS state_0,
if (p.state = 1, 1, 0) AS state_1,
if (p.state = 2, 1, 0) AS state_2
FROM policies p
INNER JOIN policy_business_units pb
ON pb.id = p.policy_business_unit_id
INNER JOIN comercial_areas ca
ON ca.id = pb.comercial_area_id
INNER JOIN cia_ensures ce
ON ce.id = p.cia_ensure_id
WHERE ca.id = @id
) AS states
ON sections.bus_id = states.bus_id
AND sections.cia_id = states.cia_id
ORDER BY sections.cia_id;
DEMO@@CarlitosMorales-正如您所看到的,sql fiddle可以工作,因此它不是查询。你的桌子模式和你提供的小提琴完全一样吗?您必须用所需的值替换3个
@id
变量。当崩溃发生时,确切的错误消息是什么?@CarlitosMorales-对我来说,它在mysql客户端和phpmyadmin中本地运行时,大约0.0077秒就没有问题了。同时,它也在起作用。关于sql FIDLE,您的表模式是否有任何不同?如果没有,您能否为这些表提供更多的示例数据?表中有多少行用于测试?您是否使用与小提琴中完全相同的设置和数据进行了测试?请先检查这是否有效。@CarlitosMorales-请使用完全相同的数据和模式!是的,我很高兴,但从这一点可以看出,查询中的总和在哪里?是的,它工作并更改了策略_business_unit=1,因为我有很多信息,现在我正在尝试获取总和=),但感谢您的帮助,这将有所帮助。非常感谢师父的帮助。