State cursors not supported

Explicitly stating Azure SQL Data Warehouse does not support cursors.
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cc: @XiaoyuMSFT
GitHub Issue: https://github.com/MicrosoftDocs/azure-docs/issues/50382

Author: MartinJaffer-MSFT

articles/sql-data-warehouse/sql-data-warehouse-develop-loops.md

@@ -14,7 +14,7 @@ ms.custom: seo-lt-2019
 ---
 
 # Using T-SQL loops in SQL Data Warehouse
-Tips for using T-SQL loops and replacing cursors in Azure SQL Data Warehouse for developing solutions.
+Tips for using T-SQL loops and replacing cursors in Azure SQL Data Warehouse for developing solutions, as Azure SQL Data Warehouse does not support cursors.
 
 ## Purpose of WHILE loops