In module's admin grid I am using this code to get collection and group them by customer id

$collection = Mage::getModel('referafriend/statistics')->getCollection();

but here i have to use renderer and filter functions for customer info like name and email against each entity_id. i want to join customer model with my module's table. for this i have written this code

 $collection = Mage::getModel('customer/customer')->getCollection()
$collection->getSelect()->join(array('refer' => 'table_name'),'refer.entity_id = e.entity_id'

but it gives me this error

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'entity_id' in group statement is ambiguous

any help will be highly appreciated.

  • 1
    it should be ->group('e.entity_id'); – Amit Bera Oct 16 '14 at 11:12
  • You should add this as an answer with some detail on why you need the e. – Jonathan Hussey Oct 16 '14 at 11:24
  • Sorry for this silly mistake. @AmitBera thanks for your help and please add this as answer so that question could be closed. – Haris Oct 16 '14 at 11:38

You need to add table name in group by condition.As you did not added on conditions table name at table group('entity_id') so query did not find columns name


Logic is:

  • 1
    In addtion, if you need to group by multiple fields, the just add more -> group() clauses ->group('field1') ->group('field2'); – GregC Mar 24 '16 at 21:53

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