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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
89 lines
2.8 KiB
Markdown
89 lines
2.8 KiB
Markdown
---
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mapped_pages:
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- https://www.elastic.co/guide/en/elasticsearch/reference/current/sql-syntax-reserved.html
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---
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# Reserved keywords [sql-syntax-reserved]
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Table with reserved keywords that need to be quoted. Also provide an example to make it more obvious.
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The following table lists all of the keywords that are reserved in Elasticsearch SQL, along with their status in the SQL standard. These reserved keywords must be quoted (using double quotes) in order to be used as an identifier, for example:
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```sql
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SELECT "AS" FROM index
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```
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| | | |
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| --- | --- | --- |
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| **Keyword** | **SQL:2016** | **SQL-92** |
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| `ALL` | reserved | reserved |
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| `AND` | reserved | reserved |
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| `ANY` | reserved | reserved |
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| `AS` | reserved | reserved |
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| `ASC` | reserved | reserved |
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| `BETWEEN` | reserved | reserved |
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| `BY` | reserved | reserved |
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| `CAST` | reserved | reserved |
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| `CATALOG` | reserved | reserved |
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| `CONVERT` | reserved | reserved |
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| `CURRENT_DATE` | reserved | reserved |
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| `CURRENT_TIMESTAMP` | reserved | reserved |
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| `CURRENT_TIME` | reserved | reserved |
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| `DAY` | reserved | reserved |
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| `DAYS` | | |
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| `DESC` | reserved | reserved |
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| `DESCRIBE` | reserved | reserved |
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| `DISTINCT` | reserved | reserved |
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| `ESCAPE` | reserved | reserved |
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| `EXISTS` | reserved | reserved |
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| `EXPLAIN` | reserved | reserved |
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| `EXTRACT` | reserved | reserved |
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| `FALSE` | reserved | reserved |
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| `FIRST` | reserved | reserved |
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| `FROM` | reserved | reserved |
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| `FULL` | reserved | reserved |
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| `GROUP` | reserved | reserved |
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| `HAVING` | reserved | reserved |
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| `HOUR` | reserved | reserved |
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| `HOURS` | | |
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| `IN` | reserved | reserved |
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| `INNER` | reserved | reserved |
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| `INTERVAL` | reserved | reserved |
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| `IS` | reserved | reserved |
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| `JOIN` | reserved | reserved |
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| `LEFT` | reserved | reserved |
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| `LIKE` | reserved | reserved |
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| `LIMIT` | reserved | reserved |
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| `MATCH` | reserved | reserved |
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| `MINUTE` | reserved | reserved |
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| `MINUTES` | | |
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| `MONTH` | reserved | reserved |
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| `NATURAL` | reserved | reserved |
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| `NOT` | reserved | reserved |
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| `NULL` | reserved | reserved |
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| `NULLS` | | |
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| `ON` | reserved | reserved |
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| `OR` | reserved | reserved |
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| `ORDER` | reserved | reserved |
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| `OUTER` | reserved | reserved |
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| `RIGHT` | reserved | reserved |
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| `RLIKE` | | |
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| `QUERY` | | |
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| `SECOND` | reserved | reserved |
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| `SECONDS` | | |
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| `SELECT` | reserved | reserved |
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| `SESSION` | | reserved |
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| `TABLE` | reserved | reserved |
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| `TABLES` | | |
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| `THEN` | reserved | reserved |
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| `TO` | reserved | reserved |
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| `TOP` | reserved | reserved |
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| `TRUE` | reserved | reserved |
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| `TYPE` | | |
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| `USING` | reserved | reserved |
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| `WHEN` | reserved | reserved |
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| `WHERE` | reserved | reserved |
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| `WITH` | reserved | reserved |
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| `YEAR` | reserved | reserved |
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| `YEARS` | | |
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