# Only

The Only script keyword is used as an aggregation function, or as part of the syntax in partial reload prefixes Add, Replace, and Merge.

[Only - script function](https://help.qlik.com/en-US/sense/May2025/Subsystems/Hub/Content/Sense_Hub/Scripting/AggregationFunctions/only.htm)

[Add](https://help.qlik.com/en-US/sense/May2025/Subsystems/Hub/Content/Sense_Hub/Scripting/ScriptPrefixes/Add.htm)

[Replace](https://help.qlik.com/en-US/sense/May2025/Subsystems/Hub/Content/Sense_Hub/Scripting/ScriptPrefixes/Replace.htm)

[Merge](https://help.qlik.com/en-US/sense/May2025/Subsystems/Hub/Content/Sense_Hub/Scripting/ScriptPrefixes/Merge.htm)