elasticsearch/docs/reference/esql/processing-commands/dissect.asciidoc
Nik Everett 1256a49c3a
ESQL: Move description of commands in docs (#110714)
This copies the first line of the description of each command to just
under the syntax so that it's "in order", before the `Parameters`
section. That way if you are reading from top to bottom you see:
```
syntax
short description
parameter names and descriptions
long description
examples
```

I've also removed the `Description` section entirely if the description
was just one sentence. So in some cases that just isn't `long
description`.
2024-07-11 08:31:35 -04:00

62 lines
1.6 KiB
Text

[discrete]
[[esql-dissect]]
=== `DISSECT`
`DISSECT` enables you to <<esql-process-data-with-dissect-and-grok,extract
structured data out of a string>>.
**Syntax**
[source,esql]
----
DISSECT input "pattern" [APPEND_SEPARATOR="<separator>"]
----
*Parameters*
`input`::
The column that contains the string you want to structure. If the column has
multiple values, `DISSECT` will process each value.
`pattern`::
A <<esql-dissect-patterns,dissect pattern>>.
`<separator>`::
A string used as the separator between appended values, when using the <<esql-append-modifier,append modifier>>.
*Description*
`DISSECT` enables you to <<esql-process-data-with-dissect-and-grok,extract
structured data out of a string>>. `DISSECT` matches the string against a
delimiter-based pattern, and extracts the specified keys as columns.
Refer to <<esql-process-data-with-dissect>> for the syntax of dissect patterns.
*Examples*
// tag::examples[]
The following example parses a string that contains a timestamp, some text, and
an IP address:
[source.merge.styled,esql]
----
include::{esql-specs}/docs.csv-spec[tag=basicDissect]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/docs.csv-spec[tag=basicDissect-result]
|===
By default, `DISSECT` outputs keyword string columns. To convert to another
type, use <<esql-type-conversion-functions>>:
[source.merge.styled,esql]
----
include::{esql-specs}/docs.csv-spec[tag=dissectWithToDatetime]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/docs.csv-spec[tag=dissectWithToDatetime-result]
|===
// end::examples[]