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Marketing Cloud SQL Query 1 to many only get result if only 1 record is present in that Data Extension



The Next CEO of Stack Overflow
2019 Community Moderator ElectionMismatch on Marketing Cloud query results vs Salesforce reportWriting a query to only match the first five digits of zip codesSQL Count Query Query Without Data Extension?Send an email to one contact with multiple ordersMarketing Cloud SQL QueryMarketing Cloud SQL to update Data ExtensionUsing query to populate target data extension for resending automated mailMarketing Cloud Mobile Connect Contacts have ID only - no other dataMarketing Cloud SQL statementGeneric System Error when I use a Left Join










1















I know a thing or two about SQL Queries, but in this case i can't figure out what to do. So in this case we have a Contact_Salesforce DE where all contacts are in. We have another DE named Placement__c_Salesforce. The relationship between the two is one to many. The Placement DE is where the orders of the contacts are in. I want to make a SQL query which only adds a contact to a new DE when this contact did his first order and NOT get contacts in who already did a few orders.



This is the code as far as i have it:



select contact.id as Id
, contact.email as Email
, contact.firstname as FirstName

from contact_salesforce contact

left join placement__c_salesforce placement
on placement.candidate__c = contact.id

where ?????


Hope someone can help me.



Cheers










share|improve this question






















  • You can also create a new field in Contact object of type "rollup summary" where you can COUNT the number of orders. Then use this field in your SQL query.

    – zeljazouli
    Mar 19 at 11:45











  • I know but adding fields to an object is not needed if it's solvable via a SQL query.

    – wfrankhuizen
    Mar 19 at 11:52















1















I know a thing or two about SQL Queries, but in this case i can't figure out what to do. So in this case we have a Contact_Salesforce DE where all contacts are in. We have another DE named Placement__c_Salesforce. The relationship between the two is one to many. The Placement DE is where the orders of the contacts are in. I want to make a SQL query which only adds a contact to a new DE when this contact did his first order and NOT get contacts in who already did a few orders.



This is the code as far as i have it:



select contact.id as Id
, contact.email as Email
, contact.firstname as FirstName

from contact_salesforce contact

left join placement__c_salesforce placement
on placement.candidate__c = contact.id

where ?????


Hope someone can help me.



Cheers










share|improve this question






















  • You can also create a new field in Contact object of type "rollup summary" where you can COUNT the number of orders. Then use this field in your SQL query.

    – zeljazouli
    Mar 19 at 11:45











  • I know but adding fields to an object is not needed if it's solvable via a SQL query.

    – wfrankhuizen
    Mar 19 at 11:52













1












1








1








I know a thing or two about SQL Queries, but in this case i can't figure out what to do. So in this case we have a Contact_Salesforce DE where all contacts are in. We have another DE named Placement__c_Salesforce. The relationship between the two is one to many. The Placement DE is where the orders of the contacts are in. I want to make a SQL query which only adds a contact to a new DE when this contact did his first order and NOT get contacts in who already did a few orders.



This is the code as far as i have it:



select contact.id as Id
, contact.email as Email
, contact.firstname as FirstName

from contact_salesforce contact

left join placement__c_salesforce placement
on placement.candidate__c = contact.id

where ?????


Hope someone can help me.



Cheers










share|improve this question














I know a thing or two about SQL Queries, but in this case i can't figure out what to do. So in this case we have a Contact_Salesforce DE where all contacts are in. We have another DE named Placement__c_Salesforce. The relationship between the two is one to many. The Placement DE is where the orders of the contacts are in. I want to make a SQL query which only adds a contact to a new DE when this contact did his first order and NOT get contacts in who already did a few orders.



This is the code as far as i have it:



select contact.id as Id
, contact.email as Email
, contact.firstname as FirstName

from contact_salesforce contact

left join placement__c_salesforce placement
on placement.candidate__c = contact.id

where ?????


Hope someone can help me.



Cheers







marketing-cloud sql






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 19 at 10:28









wfrankhuizenwfrankhuizen

808




808












  • You can also create a new field in Contact object of type "rollup summary" where you can COUNT the number of orders. Then use this field in your SQL query.

    – zeljazouli
    Mar 19 at 11:45











  • I know but adding fields to an object is not needed if it's solvable via a SQL query.

    – wfrankhuizen
    Mar 19 at 11:52

















  • You can also create a new field in Contact object of type "rollup summary" where you can COUNT the number of orders. Then use this field in your SQL query.

    – zeljazouli
    Mar 19 at 11:45











  • I know but adding fields to an object is not needed if it's solvable via a SQL query.

    – wfrankhuizen
    Mar 19 at 11:52
















You can also create a new field in Contact object of type "rollup summary" where you can COUNT the number of orders. Then use this field in your SQL query.

– zeljazouli
Mar 19 at 11:45





You can also create a new field in Contact object of type "rollup summary" where you can COUNT the number of orders. Then use this field in your SQL query.

– zeljazouli
Mar 19 at 11:45













I know but adding fields to an object is not needed if it's solvable via a SQL query.

– wfrankhuizen
Mar 19 at 11:52





I know but adding fields to an object is not needed if it's solvable via a SQL query.

– wfrankhuizen
Mar 19 at 11:52










1 Answer
1






active

oldest

votes


















3














You could try using the SQL HAVING clause.
Assuming I've understood your objective; this should work as your WHERE clause:



WHERE contact.id in (
select candidate__c
from [placement__c_salesforce]
group by candidate__c
having count(1)=1
)


In short, this will only return records where contact.id is only found ONCE in [placement__c_salesforce]






share|improve this answer

























  • Yes that is exactly what i wanted. Your solution did the job. Thanks :)

    – wfrankhuizen
    Mar 19 at 11:38











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









3














You could try using the SQL HAVING clause.
Assuming I've understood your objective; this should work as your WHERE clause:



WHERE contact.id in (
select candidate__c
from [placement__c_salesforce]
group by candidate__c
having count(1)=1
)


In short, this will only return records where contact.id is only found ONCE in [placement__c_salesforce]






share|improve this answer

























  • Yes that is exactly what i wanted. Your solution did the job. Thanks :)

    – wfrankhuizen
    Mar 19 at 11:38















3














You could try using the SQL HAVING clause.
Assuming I've understood your objective; this should work as your WHERE clause:



WHERE contact.id in (
select candidate__c
from [placement__c_salesforce]
group by candidate__c
having count(1)=1
)


In short, this will only return records where contact.id is only found ONCE in [placement__c_salesforce]






share|improve this answer

























  • Yes that is exactly what i wanted. Your solution did the job. Thanks :)

    – wfrankhuizen
    Mar 19 at 11:38













3












3








3







You could try using the SQL HAVING clause.
Assuming I've understood your objective; this should work as your WHERE clause:



WHERE contact.id in (
select candidate__c
from [placement__c_salesforce]
group by candidate__c
having count(1)=1
)


In short, this will only return records where contact.id is only found ONCE in [placement__c_salesforce]






share|improve this answer















You could try using the SQL HAVING clause.
Assuming I've understood your objective; this should work as your WHERE clause:



WHERE contact.id in (
select candidate__c
from [placement__c_salesforce]
group by candidate__c
having count(1)=1
)


In short, this will only return records where contact.id is only found ONCE in [placement__c_salesforce]







share|improve this answer














share|improve this answer



share|improve this answer








edited Mar 19 at 11:31









Adam Spriggs

17.7k42147




17.7k42147










answered Mar 19 at 10:49









Cameron RobertCameron Robert

929312




929312












  • Yes that is exactly what i wanted. Your solution did the job. Thanks :)

    – wfrankhuizen
    Mar 19 at 11:38

















  • Yes that is exactly what i wanted. Your solution did the job. Thanks :)

    – wfrankhuizen
    Mar 19 at 11:38
















Yes that is exactly what i wanted. Your solution did the job. Thanks :)

– wfrankhuizen
Mar 19 at 11:38





Yes that is exactly what i wanted. Your solution did the job. Thanks :)

– wfrankhuizen
Mar 19 at 11:38

















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