Concatenates the values of a list of fields into a single value in a new field.

ParameterTypeRequiredDefaultDescription
asstringoptional[a]_concat The output name of the field to set.
field[b]Array of stringsrequired  Fields to concatenate.

[a] Optional parameters use their default value unless explicitly set

[b] The argument name field can be omitted.

Omitted Argument Names

The argument name for field can be omitted; the following forms of this function are equivalent:

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concat("value")

and:

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concat(field="value")

For example:

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concat([aidValue, cidValue], as=checkMe2)

The function is not capable of combining arbitrary strings, or concatenating strings and fields together. The following will not work:

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concat([field1,"/",field2], as=combined)

Instead, you can use the format() function:

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format("%s/%s",field=[field1,field2],as=combined)

concat() Examples

This example will concatenate the values of the fields f1 and f2 from each event into the field combined:

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concat([f1, f2], as="combined")