title	titleSuffix	description	author	ms.author	ms.service	ms.subservice	ms.custom	ms.topic	ms.date
Map functions in the mapping data flow	Azure Data Factory & Azure Synapse	Learn about map functions in mapping data flow.	kromerm	makromer	data-factory	data-flows	synapse	conceptual	02/02/2022

Map functions in mapping data flow

The following articles provide details about map functions supported by Azure Data Factory and Azure Synapse Analytics in mapping data flows.

Map function list

Map functions perform operations on map data types

Map function	Task
associate	Creates a map of key/values. All the keys & values should be of the same type. If no items are specified, it's defaulted to a map of string to string type. Same as a `[ -> ]` creation operator. Keys and values should alternate with each other.
keyValues	Creates a map of key/values. The first parameter is an array of keys and second is the array of values. Both arrays should have equal length.
mapAssociation	Transforms a map by associating the keys to new values. Returns an array. It takes a mapping function where you can address the item as #key and current value as #value.
reassociate	Transforms a map by associating the keys to new values. It takes a mapping function where you can address the item as #key and current value as #value.