MYSQL CASE WHEN PROBLEM - mysql

SELECT `profiles`.*
FROM `profiles`
INNER JOIN `friendships`
ON `profiles`.id = `friendships`.(CASE WHEN friendships.profile_id = 1
THEN`friend_id` ELSE `profile_id` END)
How can i make the inner join like profile.id = friendships.(here will select the one key that is needed) but it doesnt work. please help :P
it cant be:
`profiles`.id = (CASE WHEN friendships.profile_id = 1
THEN `friendships`.`friend_id` ELSE `friendships`.`profile_id` END)

SELECT `profiles`.*
FROM `profiles`
INNER JOIN `friendships`
ON `profiles`.id = (CASE WHEN friendships.profile_id = 1
THEN friendships.`friend_id` ELSE friendships.`profile_id` END)

How about
SELECT `profiles`.*
FROM `profiles`
INNER JOIN `friendships`
ON (profiles.id = friendships.profile_id AND NOT (profile_id = 1))
OR ((profiles_id =friendships.friend_id) AND (profile_id = 1))

Related

Update sentence with subquery on MySQL

I have the following sentence, that returns the error
Unknown column targets.ID_TARGET in where clause
and I can't find any solution. Could you guys help?
The proposal is update 'sw_automatic' for each row with the value that th subquery provides (0 or 1)
update bt_pry_targets targets
set targets.sw_automatic = (
(
SELECT (CASE WHEN Task.ID_TP_TASKS_GROUPS = 694 THEN '0' ELSE '1' END) AS TYPE_TASK,
Task.ID_TASK FROM bt_tasks AS Task
INNER JOIN bt_pry_cmp_workflows AS BtCmpWorkflows ON (Task.ID_PRY_CMP_WORKFLOW = BtCmpWorkflows.ID_PRY_CMP_WORKFLOW)
INNER JOIN bt_pry_components AS PryComponent ON (PryComponent.ID_PRY_COMPONENT = BtCmpWorkflows.ID_PRY_COMPONENT )
INNER JOIN bt_components AS Component ON (PryComponent.ID_COMPONENT = Component.ID_COMPONENT)
INNER JOIN bt_pry_targets AS PryTarget ON (PryComponent.ID_TARGET = PryTarget.ID_TARGET)
INNER JOIN bt_flows AS Flows ON (Flows.ID_FLOW = Task.ID_FLOW)
WHERE Flows.SW_END_DEPENDENCE = 1
AND PryTarget.ID_TARGET = targets.ID_TARGET
GROUP BY Task.ID_TASK) )
where targets.sw_automatic is null;
In you subquery the column targets.ID_TARGET in not visible
so you could try using you subquery as a join table for updated
update bt_pry_targets targets
inner join (
SELECT (CASE WHEN Task.ID_TP_TASKS_GROUPS = 694 THEN '0' ELSE '1' END) AS TYPE_TASK,
Task.ID_TASK FROM bt_tasks AS Task
INNER JOIN bt_pry_cmp_workflows AS BtCmpWorkflows ON (Task.ID_PRY_CMP_WORKFLOW = BtCmpWorkflows.ID_PRY_CMP_WORKFLOW)
INNER JOIN bt_pry_components AS PryComponent ON (PryComponent.ID_PRY_COMPONENT = BtCmpWorkflows.ID_PRY_COMPONENT )
INNER JOIN bt_components AS Component ON (PryComponent.ID_COMPONENT = Component.ID_COMPONENT)
INNER JOIN bt_pry_targets AS PryTarget ON (PryComponent.ID_TARGET = PryTarget.ID_TARGET)
INNER JOIN bt_flows AS Flows ON (Flows.ID_FLOW = Task.ID_FLOW)
WHERE Flows.SW_END_DEPENDENCE = 1
AND PryTarget.ID_TARGET = targets.ID_TARGET
GROUP BY Task.ID_TASK
) t on t.PryTarget = targets.ID_TARGET
AND targets.sw_automatic is null
set targets.sw_automatic = t.TYPE_TASK

How to calculate median inside a nested select query

UPDATE:
My real purpose is I want to calculate a median and 3 summations all in one query. So here is what I am trying to do after suggestion
SELECT SUM(CASE WHEN i.code = 'T_186' THEN wf.value END) AS space_listed,
SUM(ws.floor_space) as floor_space_available,
SUM(ws.pallet) as pallet_space_available,
AVG(t1.value) as floor_space_median
FROM warehouses w JOIN
warehouse_factors wf
ON w.id = wf.warehouse_id JOIN
items i
ON i.id = wf.item_id JOIN
warehouse_spaces ws
ON
ws.warehouse_id=w.id LEFT JOIN
(
SELECT wf.id, wf.value, #rownum:=#rownum+1 as `row_number`, #total_rows:=#rownum
FROM (SELECT #rownum:=0) r , warehouses w
JOIN warehouse_factors wf
ON w.id=wf.id
JOIN items i
ON i.id=wf.item_id
WHERE wf.value is NOT NULL
AND
i.code = 'T_032'
ORDER BY wf.value
) as t1
ON
t1.id = w.id
WHERE i.code IN ('T_041', 'T_186', 'T_032') AND
w.city_id = 1 AND
w.stage = 'live' AND
w.warehouse_type = 'Warehouse services';
Please need help in this. I know I have to add
WHERE
t1.row_number IN ( FLOOR((#total_rows+1)/2), FLOOR((#total_rows+2)/2) );
but I can't figure how to incorporate this in the query.
Any other suggestion would be of great help
Two solutions (not tested, they hopefully work):
Use variables
SET
#p1 = NULL,
#p2 = NULL;
-- assign result of your first query to #p1
SELECT
#p1 := SUM(warehouse_factors.value)
FROM
...;
-- assign result of your second query to #p2
SELECT
#p2 := warehouse_factors.value
FROM
...;
SELECT
#p1 AS space_listed,
#p2 AS pallet_median;
Or:
Join both queries
SELECT
t1.space_listed,
t3.pallet_median
FROM
(
-- your first query here
) AS t1
FULL OUTER JOIN (
-- your second query here
) AS t3 ON 1 = 1
You seem to want conditional aggregation:
SELECT SUM(CASE WHEN i.code = 'T_186' THEN wf.value END) AS space_listed,
SUM(CASE WHEN i.code = 'T_041' AND wf.value > 0 THEN wf.value END) AS pallet_median
FROM warehouses w JOIN
warehouse_factors wf
ON w.id = wf.warehouse_id LEFT JOIN
items i
ON i.id = wf.item_id
WHERE i.code IN ('T_041', 'T_186') AND
w.city_id = 2 AND
w.stage = 'live' AND
w.warehouse_type = 'Warehouse services'

MySQL query taking too much time

query taking 1 minute to fetch results
SELECT
`jp`.`id`,
`jp`.`title` AS game_title,
`jp`.`game_type`,
`jp`.`state_abb` AS game_state,
`jp`.`location` AS game_city,
`jp`.`zipcode` AS game_zipcode,
`jp`.`modified_on`,
`jp`.`posted_on`,
`jp`.`game_referal_amount`,
`jp`.`games_referal_amount_type`,
`jp`.`status`,
`jp`.`is_flaged`,
`u`.`id` AS employer_id,
`u`.`email` AS employer_email,
`u`.`name` AS employer_name,
`jf`.`name` AS game_function,
`jp`.`game_freeze_status`,
`jp`.`game_statistics`,
`jp`.`ats_value`,
`jp`.`integration_id`,
`u`.`account_manager_id`,
`jp`.`model_game`,
`jp`.`group_id`,
(CASE
WHEN jp.group_id != '0' THEN gm.group_name
ELSE 'NA'
END) AS group_name,
`jp`.`priority_game`,
(CASE
WHEN jp.country != 'US' THEN jp.country_name
ELSE ''
END) AS game_country,
IFNULL((CASE
WHEN
`jp`.`account_manager_id` IS NULL
OR `jp`.`account_manager_id` = 0
THEN
(SELECT
(CASE
WHEN
account_manager_id IS NULL
OR account_manager_id = 0
THEN
`u`.`account_manager_id`
ELSE account_manager_id
END) AS account_manager_id
FROM
user_user
WHERE
id = (SELECT
user_id
FROM
game_user_assigned
WHERE
game_id = `jp`.`id`
LIMIT 1))
ELSE `jp`.`account_manager_id`
END),
`u`.`account_manager_id`) AS acc,
(SELECT
COUNT(recach_limit_id)
FROM
recach_limit
WHERE
recach_limit = '1'
AND recach_limit_game_id = rpr.recach_limit_game_id) AS somewhatgame,
(SELECT
COUNT(recach_limit_id)
FROM
recach_limit
WHERE
recach_limit = '2'
AND recach_limit_game_id = rpr.recach_limit_game_id) AS verygamecommitted,
(SELECT
COUNT(recach_limit_id)
FROM
recach_limit
WHERE
recach_limit = '3'
AND recach_limit_game_id = rpr.recach_limit_game_id) AS notgame,
(SELECT
COUNT(joa.id) AS applicationcount
FROM
game_refer_to_member jrmm
INNER JOIN
game_refer jrr ON jrr.id = jrmm.rid
INNER JOIN
game_applied joa ON jrmm.id = joa.referred_by
WHERE
jrmm.STATUS = '1'
AND jrr.referby_user_id IN (SELECT
ab_testing_user_id
FROM
ab_testing)
AND joa.game_post_id = rpr.recach_limit_game_id
AND (rpr.recach_limit = 1
OR rpr.recach_limit = 2)) AS gamecount
FROM
(`game_post` AS jp)
JOIN
`user_info` AS u ON `jp`.`user_user_id` = `u`.`id`
JOIN
`game_functional` jf ON `jp`.`game_functional_id` = `jf`.`id`
LEFT JOIN
`group_musesm` gm ON `gm`.`group_id` = `jp`.`group_id`
LEFT JOIN
`recach_limit` rpr ON `jp`.`id` = `rpr`.`recach_limit_game_id`
WHERE
`jp`.`status` != '3'
GROUP BY `jp`.`id`
ORDER BY `posted_on` DESC
LIMIT 10
I would first suggest not nesting select statements because this will cause an n^x performance hit on every xth level and I see at least 3 levels of selects inside this query.
Add index
INDEX(status, posted_on)
Move LIMIT inside
Then, instead of saying
FROM (`game_post` AS jp)
say
FROM ( SELECT id FROM game_post
WHERE status != 3
ORDER BY posted_on DESC
LIMIT 10 ) AS ids
JOIN game_post AS jp USING(id)
(I am assuming that the PK of jp is (id)?)
That should efficiently use the new index to get the 10 ids needed. Then it will reach back into game_post to get the other columns.
LEFT
Also, don't say LEFT unless you need it. It costs something to generate NULLs that you may not be needing.
Is GROUP BY necessary?
If you remove the GROUP BY, does it show dup ids? The above changes may have eliminated the need.
IN(SELECT) may optimize poorly
Change
AND jrr.referby_user_id IN ( SELECT ab_testing_user_id
FROM ab_testing )
to
AND EXISTS ( SELECT * FROM ab_testing
WHERE ab_testing_user_id = jrr.referby_user_id )
(This change may or may not help, depending on the version you are running.)
More
Please provide EXPLAIN SELECT if you need further assistance.

Combine Union ALL with Inner Join Statement

I have a problem how to combine the sql statements (inner join and union all. as a Newbie in SQL. Hopefully all members can help me to solve the problems.attached herewith the SQL. The leave_Trx and leave_History contain same values that need to be union. Thank you.
select m.name, t.startdt, t.enddt,t.noday,t.createdDT,
(case when t.approveST = 'Y' then 'Approved' when t.approveST = 'N' then 'Not Approved' else 'Pending' end) as appST
from leave_Trx t
inner join leave_MType m on m.typeID = t.trxID
inner join hr_personaldata b on b.pers_ID = #pers_ID
where year(t.startdt) = #yyear
and b.pers_ID = #pers_ID and b.pers_name LIKE '%'+#pers_name+'%'
and b.pers_compID LIKE ''+#compID+''
union all
select * from leave_History h
where year(h.startdt) = #yyear and h.status = 'A'
ORDER BY t.startdt
select t.pers_ID,t.startdt, t.enddt,t.noday,t.createdDT,
(case when t.approveST = 'Y' then 'Approved' when t.approveST = 'N' then 'Not Approved' else 'Pending' end) as appST
from leave_Trx t
inner join leave_MType m on m.typeID = t.pers_ID
inner join hr_personaldata l on l.pers_ID = #pers_ID
where year(t.startdt) = #yyear and t.status = 'A'
union all
select h.pers_ID, h.startdt, h.enddt,h.noday,h.createdDT,
(case when h.approveST = 'Y' then 'Approved' when h.approveST = 'N' then 'Not Approved' else 'Pending' end) as appST
from leave_History h
inner join leave_MType m on m.typeID = h.pers_ID
inner join hr_personaldata b on b.pers_ID = #pers_ID
where year(h.startdt) = #yyear and h.status = 'A'

DATEDIFF Subquery returns more than 1 row in mysql

Having an issue with a specific section of a query using DATEDIFF:
select 1 as NumApps,
LenderInfo.Name as LenderName,
CASE WHEN ApplicationInfo.AEType IS NULL OR ApplicationInfo.AEType = 0 THEN 'Unknown' ELSECONCAT (AEContact.FirstName, ' ', AEContact.LastName) END As AEName,
CASE WHEN b.createdby > 0 THEN CONCAT (contactinfo.firstname, ' ', contactinfo.lastname) END AS LogActionBy,
CASE WHEN ApplicationInfo.RecertificationById IS NULL THEN CASE WHEN ApplicationInfo.IsCorrespondent IS NULL OR ApplicationInfo.IsCorrespondent = 0 THEN 'Wholesale' ELSE 'Correspondent' END ELSE CASE WHEN ApplicationInfo.IsCorrespondent IS NULL OR ApplicationInfo.IsCorrespondent = 0 THEN 'Wholesale - Recert' ELSE 'Correspondent- Recert' END END As AppType,
Applicationinfo.SubmissionDate,
ApplicationInfo.ApplicationID,
b.status AS LogStatus,
b.CreatedOn as LogDate,
companyinfo.Name,
companyinfo.NMLSEntityID,
applicationinfo.CreatedDate,
ApplicationInfo.Status as ApplicationStatus,
ApplicationInfo.StatusChangeDate,
DATEDIFF ((Select CreatedOn From ApplicationStatusChangeLog a where a.ApplicationId = b.ApplicationId
And a.status = 'Approved'),(Select CreatedOn From ApplicationStatusChangeLog a Where a.ApplicationId = b.ApplicationId And a.status = 'Pending Approval')) AS DaysToApprove
from applicationinfo
INNER JOIN CompanyInfo ON(ApplicationInfo.CompanyId = CompanyInfo.CompanyId)
left join CompanyInfo As LenderInfo ON (ApplicationInfo.LenderId = LenderInfo.CompanyId)
LEFT JOIN UserInfo ON (UserInfo.UserId = ApplicationInfo.LastModifiedById)
LEFT JOIN ContactInfo ON UserInfo.ContactId = ContactInfo.ContactId
LEFT JOIN ContactInfo AS Comergence ON(ApplicationInfo.ComergenceRepId = Comergence.ContactId)
LEFT JOIN UserInfo AS AEUser ON(AEUser.UserId = ApplicationInfo.AEType)
left join paymentinfo on applicationinfo.applicationid = paymentinfo.applicationid
Inner join applicationstatuschangelog b on applicationinfo.applicationid = b.applicationid
LEFT JOIN ContactInfo AS AEContact ON(AEContact.ContactId = AEUser.ContactId)
LEFT JOIN UserInfo AS StatusUser ON(StatusUser.UserId = ApplicationInfo.StatusChangeById)
LEFT JOIN ContactInfo AS StatusContact ON(StatusContact.ContactId = StatusUser.ContactId)
LEFT JOIN ApprovalStatus ON(ApplicationInfo.ApplicationId = ApprovalStatus.ApplicationId AND ApplicationInfo.CompanyId = ApprovalStatus.CompanyHQId
AND ApplicationInfo.CompanyId = ApprovalStatus.CompanyId)
Where ApplicationInfo.Status NOT In ('Approved Monitor Only')
AND LenderInfo.ActiveLenderContract = 1
AND COALESCE(ApplicationInfo.IsDeleted,0) <> 1
AND b.Status NOT IN ('Incomplete', 'Not Submitted')
Group BY b.ApplicationID`
I've seen some people mentioning using IN instead of = within the subquery, but I can't seem to get it to work. Any ideas out there? Thanks in advance.
I was able to get the query working by adding 'Limit 1' after the identified status:
(Select CreatedOn From ApplicationStatusChangeLog a where a.ApplicationId = b.ApplicationId
And a.status = 'Approved' LIMIT 1),(Select CreatedOn From ApplicationStatusChangeLog a Where a.ApplicationId = b.ApplicationId And a.status = 'Pending Approval' LIMIT 1)