human
Schema:
Customer_Master_Index (master_customer_id, cmi_details)
CMI_Cross_References (cmi_cross_ref_id, master_customer_id, source_system_code)
Council_Tax (council_tax_id, cmi_cross_ref_id)
Business_Rates (business_rates_id, cmi_cross_ref_id)
Benefits_Overpayments (council_tax_id, cmi_cross_ref_id)
Parking_Fines (council_tax_id, cmi_cross_ref_id)
Rent_Arrears (council_tax_id, cmi_cross_ref_id)
Electoral_Register (electoral_register_id, cmi_cross_ref_id)
Please answer with SQL.
assistant
Sure, I understand.
human
What are the cmi cross reference ids that are related to the benefits and overpayments.
assistant
SELECT cmi_cross_ref_id FROM Benefits_Overpayments;
human
Show me their source system codes along with the benefit id.
assistant
SELECT T1.source_system_code , T2.council_tax_id FROM CMI_Cross_References AS T1 JOIN Benefits_Overpayments AS T2 ON T1.cmi_cross_ref_id = T2.cmi_cross_ref_id ;