+You can use [Azure SQL Database](https://azure.microsoft.com/services/sql-database/) as an output for data that's relational in nature or for applications that depend on content being hosted in a relational database. Azure Stream Analytics jobs write to an existing table in SQL Database. The table schema must exactly match the fields and their types in your job's output. The Azure portal experience for Stream Analytics allows you to [test your streaming query and also detect if there are any mismatches between the schema](sql-db-table.md) of the results produced by your job and the schema of the target table in your SQL database. To learn about ways to improve write throughput, see the [Stream Analytics with Azure SQL Database as output](stream-analytics-sql-output-perf.md) article. While you can also specify [Azure Synapse Analytics SQL pool](https://azure.microsoft.com/documentation/services/sql-data-warehouse/) as an output via the SQL Database output option, it is recommended to use the dedicated [Azure Synapse Analytics output connector](azure-synapse-analytics-output.md) for best performance.
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