Posts by dnat • 13 points

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  Q: SQL query with 3 tables, summation in 2 and aggregation

  Hello. I’m using the Firebird 2.5 database and I have 3 tables: Customers (client/patient registration); Consultation (consultations that customers have conducted); Payments (informs the amounts…

  sql

  asked 2 years, 10 months ago dnat 13