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csbaa non-selective SOQL
hello helpers
i am experiencing a strange error when try to run an soql query within a trigger.
the query try to retrieve a record set from Attachment object and look like
String variable ='something';
list<Attachment> att =[select id, Name from Attachment where Name =:variable ];
the attachment object contain more then150000 records.
the query throw an exception saying that is non selectiv.
but
when I execute the same query in developer console I there is no attacment having that name.
so my question is how could be non selectiv a query which would return zero records?
thanks in advance
csbaa
i am experiencing a strange error when try to run an soql query within a trigger.
the query try to retrieve a record set from Attachment object and look like
String variable ='something';
list<Attachment> att =[select id, Name from Attachment where Name =:variable ];
the attachment object contain more then150000 records.
the query throw an exception saying that is non selectiv.
but
when I execute the same query in developer console I there is no attacment having that name.
so my question is how could be non selectiv a query which would return zero records?
thanks in advance
csbaa
Try:
See: https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/sforce_api_objects_attachment.htm
Below is the reason mentioned for Non-Selective Query :
- When your object holds a large number of records (As in your case) and you query on that object by using a filter which is not an indexed field than you will get the error as you are recieving.
- In your case, your object is holding too many records and you are using a filter on Name field which is not considered to be indexed so you are recieving the Non-Selective query error.
Please have a look on the below link to know more about Non-Selective queries and how to overcome them :https://help.salesforce.com/apex/HTViewSolution?urlname=How-to-make-my-SOQL-query-selective&language=en_US (https://help.salesforce.com/apex/HTViewSolution?urlname=How-to-make-my-SOQL-query-selective&language=en_US)
Let me know if you need more clarification or information on this.
Thanks,
Abhishek Bansal.
as I know Name field is by default indexed for all SF objects
Regards
csaba
Standard name fields are indexed but your query can be non-selective even if your filter is indexed.
Please see the information on the link provided above.
May be it is useful to you.
Thanks,
Abhishek
The syntax you suggested is not accepted
when I chnage list<Attachment> att = [select Id,Name From Attachment where Name = :attName];
to
list<Attachment> att = [select Id,Name From Attachment where Name = :attName.Name]; I got a compile error lie below
Error: Compile Error: Initial term of field expression must be a concrete SObject: String at line 348 column 126