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elasticsearch/docs/reference/query-languages/sql-syntax-show-columns.md
Liam Thompson b98606e712
[9.0] [docs] Migrate docs from AsciiDoc to Markdown (#123507) (#124124) 
* [docs] Migrate docs from AsciiDoc to Markdown (#123507)

* delete asciidoc files

* add migrated files

* fix errors

* Disable docs tests

* Clarify release notes page titles

* Revert "Clarify release notes page titles"

This reverts commit 8be688648d.

* Comment out edternal URI images

* Clean up query languages landing pages, link to conceptual docs

* Add .md to url

* Fixes inference processor nesting.

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Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Co-authored-by: Liam Thompson <leemthompo@gmail.com>
Co-authored-by: Martijn Laarman <Mpdreamz@gmail.com>
Co-authored-by: István Zoltán Szabó <szabosteve@gmail.com>
(cherry picked from commit b7e3a1e14b)

# Conflicts:
#	docs/build.gradle
#	docs/reference/migration/index.asciidoc
#	docs/reference/migration/migrate_9_0.asciidoc
#	docs/reference/release-notes.asciidoc
#	docs/reference/release-notes/9.0.0.asciidoc
#	docs/reference/release-notes/highlights.asciidoc

* Fix build file

* Really fix build file

---------

Co-authored-by: Colleen McGinnis <colleen.j.mcginnis@gmail.com>
2025-03-06 07:53:46 +01:00

1.6 KiB
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https://www.elastic.co/guide/en/elasticsearch/reference/current/sql-syntax-show-columns.html

SHOW COLUMNS [sql-syntax-show-columns]

SHOW COLUMNS
    [CATALOG identifier]? <1>
    [INCLUDE FROZEN]?     <2>
    [FROM | IN]
    [table_identifier |   <3>
     LIKE pattern]        <4>
  1. Catalog (cluster) identifier. Supports wildcards (*).
  2. Whether or not to include frozen indices.
  3. Single table (index or data stream) identifier or double-quoted multi-target pattern.
  4. SQL LIKE pattern matching table names.

See index patterns for more information about patterns.

Description: List the columns in table and their data type (and other attributes).

SHOW COLUMNS IN emp;

       column       |     type      |    mapping
--------------------+---------------+---------------
birth_date          |TIMESTAMP      |datetime
dep                 |STRUCT         |nested
dep.dep_id          |VARCHAR        |keyword
dep.dep_name        |VARCHAR        |text
dep.dep_name.keyword|VARCHAR        |keyword
dep.from_date       |TIMESTAMP      |datetime
dep.to_date         |TIMESTAMP      |datetime
emp_no              |INTEGER        |integer
first_name          |VARCHAR        |text
first_name.keyword  |VARCHAR        |keyword
gender              |VARCHAR        |keyword
hire_date           |TIMESTAMP      |datetime
languages           |TINYINT        |byte
last_name           |VARCHAR        |text
last_name.keyword   |VARCHAR        |keyword
name                |VARCHAR        |keyword
salary              |INTEGER        |integer