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[DOCS] EQL: Add lookup support to : operator #65262

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Nov 24, 2020
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[DOCS] EQL: Add lookup support to : operator #65262

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[DOCS] EQL: Add lookup support to `:` operator
jrodewig Nov 19, 2020
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Change to active voice
jrodewig Nov 19, 2020
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22 changes: 18 additions & 4 deletions docs/reference/eql/syntax.asciidoc
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Original file line number Diff line number Diff line change
Expand Up @@ -133,7 +133,8 @@ are not supported.
`:` (equal, case-insensitive)::
Returns `true` if strings to the left and right of the operator are equal.
Otherwise returns `false`. Matching is case-insensitive and can only be used to
compare strings. <<eql-syntax-wildcards,Wildcards>> are supported.
compare strings. Supports <<eql-syntax-wildcards,wildcards>> and
<<eql-syntax-lookup-operators,list lookups>>.

[IMPORTANT]
====
Expand Down Expand Up @@ -222,6 +223,7 @@ Returns `true` if the condition to the right is `false`.
----
user.name in ("Administrator", "SYSTEM", "NETWORK SERVICE")
user.name not in ("Administrator", "SYSTEM", "NETWORK SERVICE")
user.name : ("administrator", "system", "network service")
----

`in` (case-sensitive)::
Expand All @@ -232,6 +234,10 @@ matching is case-sensitive.
Returns `true` if the value is not contained in the provided list. For strings,
matching is case-sensitive.

`:` (case-insensitive)::
Returns `true` if the value is contained in the provided list. Can only be used
to compare strings.

[discrete]
[[eql-syntax-math-operators]]
===== Math operators
Expand Down Expand Up @@ -381,9 +387,17 @@ match specific patterns:

[source,eql]
----
field : "example*wildcard"
field : "*example-wildcard"
field : "example-wildcard*"
field : "f*o"
field : "*foo"
field : "foo*"
----

The `:` operator also supports wildcards in <<eql-syntax-lookup-operators,list
lookups>>:

[source,eql]
----
field : ("f*o", "*bar", "baz*", "qux")
----

[discrete]
Expand Down