It is important to also note that append searches are not processed like subsearches where the subsearch is processed first. Note that the secondary search must begin with a generating command. After the append, you can use the table command to display the results as needed. The results from the append command are usually appended to the bottom of the results from the primary search. Does not allow calculations or manipulations per source, so any further calculations or manipulations will need to be performed on all returned eventsĮxample: In the example below, the OR operator is used to combine fields from two different indexes and grouped by the customer_id, which is common to both data sources.Īppend is a streaming command used to add the results of a secondary search to the results of the primary search.
– Saves time since it does only a single search for events that match specified criteria and returns only the applicable events before any other manipulations.– Merges fields and event data from multiple data sources.The required events are identified earlier in the search before calculations and manipulations are applied. When used in this manner, Splunk runs a single search, looking for any events that match any of the specified criteria in the searches. Additional filtering can also be added to each data source, e.g., (index=ABC loc=Ohio) OR (index=XYZ loc=California). (sourcetype=foo OR sourcetype=bar OR sourcetype=xyz). However, the “OR” operator is also commonly used to combine data from separate sources, e.g. “foo OR bar.” This tells the program to find any event that contains either word. The most common use of the “OR” operator is to find multiple values in event data, e.g. I will be describing a few other commands or functions that can be applied when combining data from multiple sources in Splunk, including their benefits and limitations.
The most intuitive command to use when these situations arise is the “join” command, but it tends to consume a lot of resources – especially when joining large datasets.
#SPLUNK JOIN ONE TO MANY HOW TO#
How to Combine Multiple Data Sources in Splunk SPLĭepending on your use case or what you are looking to achieve with your Splunk Processing Language (SPL), you may need to query multiple data sources and merge the results.
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