![]() The SQL where and the SPL where/search generally do the same thing, the only difference should be the syntax. you can see examples in the links I supplied. The difference between where and search, in my opinion, is that search is best for field to value comparisons and where is better for field to field comparisons (or evaluating a field and comparing it to a value). Where can be used to eliminate fields that don't match certain criteria, as can the search command. The inner search always runs first, and it’s important. Subsearches contain an inner search, who’s results are then used as input to filter the results of an outer search. Simply put, a subsearch is a way to use the result of one search as the input to another. To elaborate, i'll answer your second part: A subsearch in Splunk is a unique way to stitch together results from your data. OR can also be used in where and search statements. You can also use OR in eval statements, such as |eval newhost=if(host = x OR host = y,"xy",host) would create a field called newhost with values xy when the host is either x or y, otherwise the value would be any other host value. In host = x OR host = y you will retrieve data from both y and x hosts. In addition, you dont need to use the table command in intermediate part of the search. Anyway, the lookup command is like a join command so, rebuild your search inverting the terms. There is also this doc that can help you understand a bit of the linguistics if you put a search in subsearch, you have the limit of 50,000 results, so expanding the time range you dont have additional results. One I'd recommend is Power of SPL, the recording isn't up but the slides are. conf2017 that could help you learn some basic SPL You can also combine a search result set to itself using the selfjoin command. One or more of the fields must be common to each result set. If you use a wildcard for the value, NOT fieldA=* returns events where fieldA is null or undefined, and fieldA!=* never returns any events.There were some great sessions at. The join command is used to combine the results of a sub search with the results of the main search. The following search returns events where fieldA exists and does not have the value "value2". The following search returns everything except fieldA="value2", including all other fields. This example uses the sample data from the Search Tutorial. Append the top purchaser for each type of product. Count the number of different customers who purchased items. ![]() Searching with the boolean "NOT" comparison operator is not the same as using the "!=" comparison. This search demonstrates how to use the append command in a way that is similar to using the addcoltotals command to add the column totals. | search sourcetype=access_combined_wcookie action IN (addtocart, purchase) 5. In the events from an access.log file, search the action field for the values addtocart or purchase. This example shows how to use the IN operator to specify a list of field-value pair matchings. | search host=webserver* status IN(4*, 5*) 4. ![]() If you are using reports, also referred to as 'saved searches,' in the Splunk Dashboard Studio see, Use reports and saved. See Create and edit reports in the Reporting Manual. When you create a search that you would like to run again, you can save the search as a report. The fake record will eliminate the case 3 so I will only need to filter the result. In the Search app, the choices are listed under the Save As drop-down. | search host=webserver* (status=4* OR status=5*)Īn alternative is to use the IN operator, because you are specifying two field-value pairs on the same field. the original search returns records the original search does not return anything because the result is filtered the original search does not return anything because the source is empty I need to distinguish cases 2 and 3, which the join is for. This example searches for events from all of the web servers that have an HTTP client and server error status. This example shows field-value pair matching with wildcards. | search (code=10 OR code=29 OR code=43) host!="localhost" xqp>5Īn alternative is to use the IN operator, because you are specifying multiple field-value pairs on the same field. Since Splunk stores all data in indices, it can use the index on the join attribute to combine the left and right-hand data. It can also join a search result set with itself using the selfjoin command. This example searches for events with code values of either 10, 29, or 43 and any host that is not "localhost", and an xqp value that is greater than 5. Splunk supports inner (default), outer, and left joins using the join command. ![]() This example shows field-value pair matching with boolean and comparison operators. This example shows field-value pair matching for specific values of source IP (src) and destination IP (dst). To learn more about the search command, see How the search command works. The following are examples for using the SPL2 search command.
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