Get help fixing an SQL query

About the service

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I am troubleshooting and correcting a limited SQL query. You will receive a corrected query and a check against the expected result using representative sample data. Please prepare the database type and version, the query, an anonymized data sample, and the desired result. One consolidated adjustment within the agreed scope is included. Changes to the database structure and larger optimizations are offered separately. The starting price applies to a simple query; scope and delivery time are agreed before work begins. VAT is not included. Delivery via SIAX Technology AB.