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consequence of lookup command with or without OUTPUT parameter

ankithreddy777
Contributor
‎08-01-2017 09:21 AM

What is the difference between with or without using OUTPUT parameter in lookup command.

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s2_splunk
Splunk Employee
Splunk Employee
‎08-01-2017 11:36 AM

From the documentation

Usage
When using the lookup command, if an OUTPUT or OUTPUTNEW clause is not specified, all of the fields in the lookup table that are not the match field are used as output fields. If the OUTPUT clause is specified, the output lookup fields overwrite existing fields. If the OUTPUTNEW clause is specified, the lookup is not performed for events in which the output fields already exist.

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somesoni2
Revered Legend
‎08-01-2017 09:53 AM

Without OUTPUT it'll return all the fields from the lookup table.

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