SELECT T1.document_date FROM Documents AS T1 JOIN Documents_with_Expenses AS T2 ON T1.document_id  =  T2.document_id WHERE T2.budget_type_code  =  'GV' INTERSECT SELECT T1.document_date FROM Documents AS T1 JOIN Documents_with_Expenses AS T2 ON T1.document_id  =  T2.document_id WHERE T2.budget_type_code  =  'SF'
What are the dates for the documents with both 'GV' type and 'SF' type expenses?
SELECT T1.document_date FROM Documents AS T1 JOIN Documents_with_Expenses AS T2 ON T1.document_id = T2.document_id WHERE T2.budget_type_code = 'GV ' INTERSECT SELECT T1.document_date FROM Documents AS T1 JOIN Documents_with_Expenses AS T2 ON T1.document_id = T2.document_id WHERE T2.budget_type_code = 'SF '
select t1 . document_date from documents as t1 join documents_with_expenses as t2 on t1 . document_id = t2 . document_id where t2 . budget_type_code = value intersect select t1 . document_date from documents as t1 join documents_with_expenses as t2 on t1 . document_id = t2 . document_id where t2 . budget_type_code = value
What are the dates for the documents with both 'GV ' type and 'SF ' type expenses ?