SQL works fine in Teradata SQL assistant getting error when trying to execute in Tableau custom SQL connection - response (1) by Qaisar Aftab Kiani

Try assigning alias names to the first column in your SELECT statement... SEL EXTRACT(MONTH FROM b.date_application_received) || '_' || EXTRACT(YEAR FROM b.date_application_received) as month_year, b.APPLICATION_STATUS, count(b.APPLICATION_ID) .... ....