Cached lookup functions in mapping data flow
APPLIES TO: 
Azure Data Factory
Azure Synapse Analytics
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Data flows are available both in Azure Data Factory and Azure Synapse Pipelines. This article applies to mapping data flows. If you are new to transformations, please refer to the introductory article Transform data using a mapping data flow.
The following articles provide details about cached lookup functions supported by Azure Data Factory and Azure Synapse Analytics in mapping data flows.
Cached lookup function list
The following functions are only available when using a cached lookup when you've included a cached sink.
| Cached lookup function | Task |
|---|---|
| lookup | Looks up the first row from the cached sink using the specified keys that match the keys from the cached sink. |
| mlookup | Looks up the all matching rows from the cached sink using the specified keys that match the keys from the cached sink. |
| output | Returns the first row of the results of the cache sink |
| outputs | Returns the entire output row set of the results of the cache sink |
Related content
- List of all aggregate functions.
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- Learn how to use Expression Builder.