Get the latest record of each item of a list (QUERY) - Apex Salesforce - salesforce

Given a list, I would like to get the latest People__c from each item on personList.
It is possible with a single query?
List<People__c> listPeople = [SELECT Id,(SELECT Id FROM CombinedAttachments
ORDER BY CreatedDate DESC LIMIT 1) FROM People__c WHERE Person__c IN :personList];

Related

Look for records related to another related records within specific criteria

I am trying to created a set of records based on some criteria and i need to figure out the best way to do this.
I want to create a record for every object A and B that has an specific Account object. object A needs to have a status of "DONE", and B a status of "READY" in order to create the record (which will be an Object A with an "Active" status) the fields on the new Object A will copy from some of the Object A and B fields.
This is a process im not triggering from user action but a set of records i need to already dump in the database. I do have a sandbox to start working on and testing then rolling out.
Please let me know the easiest way to do this.
I appreciate the help!
You didn't provide enough info, we don't know how the relations look like. Are A and B related lists under Account? Are they independent or is there some link from one to another?
I'll write what I would do as a script (if needed you could make a batch job out of it or perhaps you'll be more comfortable with Data Loader, reports with cross filters, MS Excel and orgy of VLOOKUPs...)
To identify all "candidate" accounts you can try with this skeleton of a query
SELECT Id, Name
FROM Account
WHERE Id IN (SELECT Account__c FROM A__c WHERE Status__c = 'Done')
AND Id IN (SELECT Account__c FROM B__c WHERE Status__c = 'Ready')
LIMIT 10000
Now, the question about amounts of data. Will it return 10K (which is limit of records you can insert/update/modify in single transaction), if more - you might have to chunk it somehow... Maybe ORDER BY Id, record Id of last processed Account and in next iteration add AND Id > '001....'
Anyway, we got a "candidate", well, maybe he already has an Active A record, we wouldn't want to make a duplicate. And besides we need to pull some fields from B so they'd be copied across. So let's modify the query a bit, to add "subqueries" (think of them as related lists or LEFT INNER JOINs if that helps)
SELECT Id, Name,
(SELECT Id FROM As__r WHERE Status__c = 'Active' LIMIT 1),
(SELECT SomeField__c, SomeOtherField__c FROM Bs__r WHERE Status__c = 'Ready' LIMIT 1)
FROM Account
WHERE Id IN (SELECT Account__c FROM A__c WHERE Status__c = 'Done')
AND Id IN (SELECT Account__c FROM B__c WHERE Status__c = 'Ready')
LIMIT 10000
Nice. So now you need to loop through accounts, see if they contain that at least 1 active record (and if they do - skip). If they don't - create new one.
List<A__c> toInsert = new List<A__c>();
for(Account a : [SELECT...]){
if(a.As__r.isEmpty() && !a.Bs__r.isEmpty()){
toInsert.add(new A__c(
Account__c = a.Id,
Status__c = 'Active',
Foo__c = a.Bs__r[0].SomeField__c,
Bar__c = a.Bs__r[0].SomeOtherField__c + 7
));
}
}
insert toInsert;

Attachments in Apex SOQL Subquery

I have custom objects Team member and Employment, and there's a lookup relationship from employment(many) to team member(one), plus another lookup record on team member called current employment.
The employment record may have attachments.
I want a SOQL query, to run in an APEX class, which will return attachments information for specific team members.
So far I have this:
SObject[] results = [select id,(select id,name from Attachments) from Employment__c where id in (select Current_Employment__c from Team_Member__c where id=:id)];
Wnen I run the query in the schema browser, it works OK and I'm able to drill-down to the attachments, but when I run it in Apex (Anonymous), the result set does not contain the attachments:
for (SObject result : results) {
System.debug(result);
}
I can only see the Employment id in the results.
How can I get attachments in APEX?
You do following to get list of attachment related to that object.
Employment__c[] results = [select id,(select id,name from Attachments) from Employment__c where id in (select Current_Employment__c from Team_Member__c where id=:id)];
for (Employment__c result : results) {
if(result.Attachments!=null){
List<Attachment> AttachmentList=result.Attachments;
}
}

Filtering issue with multiple forloop in apex | salesforce

I have a scenario where multiple loopings are causing the system resource error.
I need some help with map of map syntax or coding sample for this requirement.
Requirement is:
Account has 1 or more ReportCard records.
ReportCard has Account and Contact.
Now i need to get the list of ReportCards and filter by 1 per contact and recently created records only.
If ReportCard has 2 records with same contact, include only recently created.
// get list of unique accounts from the set
list<Account> accList = new list<Account >([SELECT Id,Average_of_Pulse_Check_Recommend_Score_N__c,Average_of_Recommend_Score_Lanyon_N__c,Average_of_Touchpoint_Recommend_Score_N__c,Average_of_Touch_Point_Satisfaction_N__c FROM Account WHERE Id in:AccIds]);
list<ReportCard__c> allRCList = new list<ReportCard__c>([SELECT Id,Net_Promoter_text__c,CreatedDate, Contact__c, Account__c, RecordTypeID, Touchpoint_Satisfaction_text__c FROM ReportCard__c WHERE Account__c in:accList Order By Account__c, CreatedDate Desc]);
List<ReportCard__c> rcListbyAccounts = new List<ReportCard__c>();
for(Account acc:accList)
{
Any help would be appreciated.
Thanks
I'm not sure I understand your situation correctly. You've skipped the for loop - I strongly suspect any issues you have there sit in the loop rather than in the queries.
Looks like you should read about using relationship queries (salesforce versions of JOIN in regular database): http://www.salesforce.com/us/developer/docs/soql_sosl/Content/sforce_api_calls_soql_relationships.htm
Pay special attention to subqueries (which behave similar to how a related list behaves on record's detail page).
From what I see I'd say you don't need to query for Accounts at all, or at least not like that. This will work equally well:
SELECT Id,Net_Promoter_text__c,CreatedDate, Contact__c, Account__c, ...
FROM ReportCard__c
WHERE Account__c in:accIds
ORDER BY Account__c, CreatedDate Desc
Now lets attack this:
List of ReportCards and filter by 1 per contact and recently created
records only. If ReportCard has 2 records with same contact, include
only recently created.
I'd reverse it - I'd start the query from Contact level, go down to the related list of Report Cards and pick the latest one. That way it eliminates the issue with duplicate contacts for you. Something like this:
SELECT Id, Name, Email,
(SELECT Id, Net_Promoter_text__c, CreatedDate, Account__c, Account__r.Name, Account__r.Average_of_Pulse_Check_Recommend_Score_N__c
FROM ReportCards__r
WHERE Account__c IN :accIds
ORDER BY CreatedDate DESC
LIMIT 1)
FROM Contact
WHERE AccountId IN :accIds
This goes from Contact "down" to Report Cards (via the relationship name ReportCards__r) and then "up" from Card to Account via Account__r.Name, Account__r.Average_of_Pulse_Check_Recommend_Score_N__c...

Salesforce - Apex - query accounts based on Activity History

Hey Salesforce experts,
I have a question on query account information efficiently. I would like to query accounts based on the updates in an activityHistory object. The problem I'm getting is that all the accounts are being retrieved no matter if there's "complete" activeHistory or not. So, Is there a way I can write this query to retrieve only accounts with activeHistory that has status="complete" and Type_for_reporting='QRC'?
List<Account> AccountsWithActivityHistories = [
SELECT
Id
,Name
,( SELECT
ActivityDate
,ActivityType
,Type_for_Reporting__c
,Description
,CreatedBy.Name
,Status
,WhatId
FROM ActivityHistories
WHERE Status ='complete' and Type_for_Reporting__c = 'QRC'
)
FROM Account
];
You have a WHERE clause on the histories but you still miss one on the Account level.
For example this would return only Accounts that have Contacts:
SELECT Id, Name
FROM Account
WHERE Id IN (SELECT AccountId FROM Contact) // try with NOT IN too
With Activities it's trickier because they don't like to be used in WHERE in that way.
http://www.salesforce.com/us/developer/docs/officetoolkit/Content/sforce_api_calls_soql_select.htm
The following objects are not currently supported in subqueries:
ActivityHistory
Attachments
Event
EventAttendee
Note
OpenActivity
Tags (AccountTag, ContactTag, and all other tag objects)
Task
Additionally the fine print at the bottom of ActivityHistory definition is also a bit discouraging.
The following restrictions on users who don’t have “View All Data” permission help prevent performance issues:
In the main clause of the relationship query, you can reference only
one record. For example, you can’t filter on all records where the
account name starts with ‘A’; instead, you must reference a single
account record.
You can’t use WHERE clauses.
You must specify a limit of 499 or fewer on the number of rows returned in the list.
You must sort on ActivityDate in ascending order and LastModifiedDate in descending order; you can display nulls last. For
example: ORDER BY ActivityDate ASC NULLS LAST, LastModifiedDate DESC.
Looks like you will need multiple queries. Go for Task (or Event, depending for which the custom field is visible), compose a set of AccountIds and then query the Accounts?
Or you can manually filter through list from your original query, copying accounts to helper list:
List<Account> finalResults = new List<Account>();
for(Account a : [SELECT...]){
if(!a.ActivityHistories.isEmpty()){
finalResults.add(a);
}
}

SOQL query with subquery

I'm having trouble getting the results I want from a Salesforce/Apex/SOQL query.
I want: A list of Contact objects containing only contacts who are CampaignMembers of a set of campaigns; and they should have the data from that Campaign member easily accessible.
(my eventual goal is a VF page with a list of all Contacts connected to any of these campaigns with a grid indicating their status for each campaign.)
These work:
Campaign[] cams = [SELECT id, name
FROM Campaign
WHERE parentid = '70170000000LRIe'];
System.debug(cams);
// returns ~4 Campaign objects
CampaignMember[] cmembers = [SELECT id, status, contactid, campaignid
FROM CampaignMember
WHERE campaignid in :cams];
System.debug(cmembers);
// returns about 40 CampaignMember objects.
Here's my problem:
Contact[] members = [SELECT id, firstname, lastname,
(SELECT id, status, comment__c, campaignid
FROM Contact.CampaignMembers
WHERE campaignid in :cams)
FROM Contact];
System.debug(members);
// contains ALL Contacts in the DB, but I wanted filtered results.
System.debug(members[x].CampaignMembers);
// this is a contact I've verified has a qualifying CampaignMember, but the list is empty.
// UPDATE: CampaignMembers are now being returned, not sure what changed...
Why aren't any CampaignMember objects being returned from the subquery?
Why isn't the Contact list being filtered? (well, obviously b/c there's no WHERE clause in it, but what WHERE clause provides what I want?)
I know I could do this by doing the CampaignMember query on its own and looping through it to prep a Contact query, but that seems like a lot of extra processing when a subquery should work.
Thanks!
Update
The CampaignMember objects are now showing up - oddly - I must have fixed some small typo without noticing (and yes, they're returning multiple columns and that seems to be fine).
I still can't figure out how to filter the Contact query, though...
You could use a semi-join on contacts to filter the contacts to the set you want, something like this
[select id, firstname, lastname,
(select id, status, comment__c, campaignid from CampaignMembers)
from contact where id in
(select contactId from campaignMember where campaignId in :cams];
Another option would be to drive from campaignMmeber instead.
[select contact.id, contact.firstname, contact.lastname,
status, comment__c, campaignId from campaignMembers
where contactId !='' and campaignId in :cams];

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