Add Snowflake difference section

Author: Clare Zheng (Shanghai Wicresoft Co Ltd)

articles/data-factory/connector-snowflake.md

@@ -8,7 +8,7 @@ ms.service: data-factory
 ms.subservice: data-movement
 ms.topic: conceptual
 ms.custom: synapse
-ms.date: 02/06/2024
+ms.date: 04/11/2024
 ---
 
 # Copy and transform data in Snowflake using Azure Data Factory or Azure Synapse Analytics
@@ -635,7 +635,18 @@ For more information about the properties, see [Lookup activity](control-flow-lo
 
 ## Upgrade the Snowflake linked service
 
-To upgrade the Snowflake linked service, create a new Snowflake linked service and configure it by referring to [Linked service properties](#linked-service-properties).
+To upgrade the Snowflake linked service, create a new Snowflake linked service and configure it by referring to [Linked service properties](#linked-service-properties). 
+
+## Differences between Snowflake and Snowflake (legacy)
+
+The Snowflake connector offers new functionalities and is compatible with most features of Snowflake (legacy) connector. The table below shows the feature differences between Snowflake and Snowflake (legacy).  
+
+| Snowflake  | Snowflake (legacy) | 
+| :----------- | :------- |
+| Support Basic and Key pair authentication. | Support Basic authentication. | 
+| Script parameters are not supported in Script activity currently. To achieve the same functionality as using Snowflake (legacy), utilize dynamic expressions for script parameters. For more information, see [Expressions and functions in Azure Data Factory and Azure Synapse Analytics](control-flow-expression-language-functions.md). | Support script parameters in Script activity. | 
+| Multiple SQL statements execution in Script activity is not supported currently. To execute multiple SQL statements, divide the query into several script blocks. | Support multiple SQL statements execution in Script activity. | 
+| Support BigDecimal in Lookup activity. The NUMBER type, as defined in Snowflake, will be displayed as a string in Lookup activity. | BigDecimal is not supported in Lookup activity.  | 
 
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