Merge pull request #175022 from kromerm/string2

Update data-flow-transformation-overview.md

Author: PRMerger-2

articles/data-factory/data-flow-transformation-overview.md

@@ -8,7 +8,7 @@ ms.service: data-factory
 ms.subservice: data-flows
 ms.custom: synapse
 ms.topic: conceptual
-ms.date: 09/09/2021
+ms.date: 10/07/2021
 ---
 
 # Mapping data flow transformation overview
@@ -38,6 +38,7 @@ Below is a list of the transformations currently supported in mapping data flow.
 | [Sink](data-flow-sink.md) | - | A final destination for your data |
 | [Sort](data-flow-sort.md) | Row modifier | Sort incoming rows on the current data stream |
 | [Source](data-flow-source.md) | - | A data source for the data flow |
+| [Stringify](data-flow-stringify.md) | - | Turn complex types into plain strings |
 | [Surrogate key](data-flow-surrogate-key.md) | Schema modifier | Add an incrementing non-business arbitrary key value |
 | [Union](data-flow-union.md) | Multiple inputs/outputs | Combine multiple data streams vertically |
 | [Unpivot](data-flow-unpivot.md) | Schema modifier | Pivot columns into row values |