> ## Documentation Index
> Fetch the complete documentation index at: https://docs.querycomment.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect SQL Server

> Choose the SQL Server deployment you want to connect to QueryComment.

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.

## Choose your deployment

<CardGroup cols={2}>
  <Card title="Self-hosted SQL Server" icon="server" href="/databases/sql-server/self-hosted">
    Connect SQL Server running on your own infrastructure.
  </Card>

  <Card title="Azure SQL" icon="cloud" href="/databases/sql-server/azure">
    Connect Azure SQL Database or Azure SQL Managed Instance.
  </Card>
</CardGroup>

After granting access, use the [production collector configuration](/databases/sql-server/collector).