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a8b2428dd1
* Restructure query-languages docs files for clarity (#124797) In a few previous PR's we restructured the ES|QL docs to make it possible to generate them dynamically. This PR just moves a few files around to make the query languages docs easier to work with, and a little more organized like the ES|QL docs. A bit part of this was setting up redirects to the new locations, so other repo's could correctly link to the elasticsearch docs. * After running tests, we revert a few features * Fix build.gradle and improved some generating code * After running tests * Update x-pack/plugin/esql/build.gradle
50 lines
1.6 KiB
Markdown
50 lines
1.6 KiB
Markdown
---
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mapped_pages:
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- https://www.elastic.co/guide/en/elasticsearch/reference/current/sql-syntax-show-columns.html
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---
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# SHOW COLUMNS [sql-syntax-show-columns]
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```sql
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SHOW COLUMNS
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[CATALOG identifier]? <1>
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[INCLUDE FROZEN]? <2>
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[FROM | IN]
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[table_identifier | <3>
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LIKE pattern] <4>
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```
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1. Catalog (cluster) identifier. Supports wildcards (`*`).
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2. Whether or not to include frozen indices.
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3. Single table (index or data stream) identifier or double-quoted multi-target pattern.
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4. SQL LIKE pattern matching table names.
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See [index patterns](/reference/query-languages/sql/sql-index-patterns.md) for more information about patterns.
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**Description**: List the columns in table and their data type (and other attributes).
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```sql
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SHOW COLUMNS IN emp;
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column | type | mapping
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--------------------+---------------+---------------
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birth_date |TIMESTAMP |datetime
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dep |STRUCT |nested
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dep.dep_id |VARCHAR |keyword
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dep.dep_name |VARCHAR |text
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dep.dep_name.keyword|VARCHAR |keyword
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dep.from_date |TIMESTAMP |datetime
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dep.to_date |TIMESTAMP |datetime
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emp_no |INTEGER |integer
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first_name |VARCHAR |text
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first_name.keyword |VARCHAR |keyword
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gender |VARCHAR |keyword
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hire_date |TIMESTAMP |datetime
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languages |TINYINT |byte
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last_name |VARCHAR |text
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last_name.keyword |VARCHAR |keyword
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name |VARCHAR |keyword
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salary |INTEGER |integer
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```
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