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Customers with Every Account Type

Find customers who have at least one account of every possible type (checking, savings, investment, credit). Return customer_id, first_name, and last_name. Sort by last_name.

Schema

🔑idINT
first_nameTEXT
last_nameTEXT
emailTEXT
phoneTEXTNULL
date_of_birthTEXT
cityTEXT
stateTEXT
countryTEXT
created_atTIMESTAMP
postgresql

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