Use CASE() and TERM() to match phrases
If you want to search for a specific term or phrase in your Splunk index, use the CASE() or TERM() directives to do an exact match of the entire term.
- Syntax: CASE(<term>)
- Description: Search for case-sensitive matches for terms and field values.
- Syntax: TERM(<term>)
- Description: Match whatever is inside the parentheses as a single term in the index, even if it contains characters that are usually recognized as minor breakers, such as periods or underscores.
TERM() directives are similar to the
PREFIX() directive used with the
tstats command because they match strings in your raw data. For more information about the
PREFIX() directive, see tstats in the Search Reference.
When to use CASE
By default, searches are case-insensitive. For example, if you search for
Error, any case of that term is returned, such as
ERROR. You can use the CASE directive to perform case-sensitive matches for terms and field values. For example, if you search for
CASE(error), your search returns results containing only the specified case of the term, which is
The following search only matches events that contain localhost in uppercase in the
When to use TERM
The TERM directive is useful for more efficiently searching for a term that:
- Contains minor breakers, such as periods or underscores
- Is bound by major breakers, such as spaces or commas
- Does not contain major breakers
When data is indexed, characters such as periods and underscores are recognized as minor breakers between terms. Use the TERM directive to ignore the minor breakers and match whatever is inside the parentheses as a single term. For example, the IP address
127.0.0.1 contains the period ( . ) minor breaker. If you search for the IP address 127.0.0.1, Splunk software searches for
127 AND 0 AND 1 and returns events that contain those numbers anywhere in the event. If you specify
TERM(127.0.0.1), the search treats the IP address as a single term, instead of individual numbers, and returns all events that contain the IP address 127.0.0.1.
The TERM directive only works for terms that are bounded by major breakers, but the term you are searching for cannot contain major breakers. For example, you cannot use TERM to search for
Maria Dubois because there is a space between the names. This is illustrated in the examples below.
When you use the TERM directive, the Splunk software expects to see the term you specify as a token in the lexicon in the .tsidx file. For more information about how Splunk software breaks events up into searchable segments, see About segmentation in Getting Data In.
See Use the TERM directive to match terms that contain minor breakers.
TERM(127.0.0.1) works for raw data that looks like this:
127.0.0.1 - admin
admin are bounded by major breakers, in this case spaces.
However, searching for
TERM(127.0.0.1) fails for data that looks like this:
ip=127.0.0.1 - user=admin
This is because the equal symbol ( = ) is a minor breaker, not a major breaker. Additionally, the IP address portion of the event is indexed as:
ip=127.0.0.1. You are looking for
127.0.0.1, which is not an indexed term.
If your data looks like this:
ip 127.0.0.1 - user admin
TERM(user admin) fails to return results. The space is a major breaker and the phrase "user admin" is not indexed as a single term. In this situation, use quotation marks to search for a string that contains a space, for example
- Related information
- Event segmentation and searching
Event segmentation and searching
SPL and regular expressions
This documentation applies to the following versions of Splunk® Enterprise: 6.5.7, 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.0.7, 7.0.8, 7.0.9, 7.0.10, 7.0.11, 7.0.13, 7.1.0, 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.5, 7.1.6, 7.1.7, 7.1.8, 7.1.9, 7.1.10, 7.2.0, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.8, 7.2.9, 7.2.10, 7.3.0, 7.3.1, 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.6, 7.3.7, 7.3.8, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.0.6, 8.0.7, 8.0.8, 8.0.9, 8.0.10, 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.1.7, 8.1.8, 8.1.9, 8.1.10, 8.1.11, 8.1.12, 8.1.13, 8.2.0, 8.2.1, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.2.6, 8.2.7, 8.2.8, 8.2.9, 8.2.10, 9.0.0, 9.0.1, 9.0.2, 9.0.3, 9.0.4, 7.3.9, 8.0.0, 8.0.1
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