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QueryComment reads completed statement statistics from the SQL Server plan cache. It uses sys.dm_exec_query_stats, sys.dm_exec_sql_text, and, outside Azure SQL Database, sys.dm_exec_plan_attributes. QueryComment does not require Query Store.

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Self-hosted SQL Server

Connect SQL Server running on your own infrastructure.

Azure SQL

Connect Azure SQL Database or Azure SQL Managed Instance.
After granting access, use the production collector configuration.