[[sql-spec-reserved]]
=== Reserved Keywords

Table with reserved keywords that need to be quoted. Also provide an example to make it more obvious.

The following table lists all of the keywords that are reserved in Presto,
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:

[source, sql]
----
SELECT "AS" FROM index
----

[cols="^,^,^",options="header"]

|===

|Keyword                      |SQL:2016      |SQL-92


|`ALL`                        |reserved      |reserved
|`AND`                        |reserved      |reserved
|`ANY`                        |reserved      |reserved
|`AS`                         |reserved      |reserved
|`ASC`                        |reserved      |reserved
|`BETWEEN`                    |reserved      |reserved
|`BY`                         |reserved      |reserved
|`CAST`                       |reserved      |reserved
|`COLUMN`                     |reserved      |reserved
|`CROSS`                      |reserved      |reserved
|`DESC`                       |reserved      |reserved
|`DESCRIBE`                   |reserved      |reserved
|`DISTINCT`                   |reserved      |reserved
|`EXISTS`                     |reserved      |reserved
|`EXPLAIN`                    |reserved      |reserved
|`EXTRACT`                    |reserved      |reserved
|`FALSE`                      |reserved      |reserved
|`FOR`                        |reserved      |reserved
|`FROM`                       |reserved      |reserved
|`FULL`                       |reserved      |reserved
|`GROUP`                      |reserved      |reserved
|`GROUPING`                   |reserved      |reserved
|`HAVING`                     |reserved      |reserved
|`IN`                         |reserved      |reserved
|`INNER`                      |reserved      |reserved
|`INTEGER`                    |reserved      |reserved
|`INTO`                       |reserved      |reserved
|`IS`                         |reserved      |reserved
|`JOIN`                       |reserved      |reserved
|`LAST`                       |reserved      |reserved
|`LEFT`                       |reserved      |reserved
|`LIKE`                       |reserved      |reserved
|`LIMIT`                      |reserved      |reserved
|`MATCH`                      |reserved      |reserved
|`NATURAL`                    |reserved      |reserved
|`NO`                         |reserved      |reserved
|`NOT`                        |reserved      |reserved
|`NULL`                       |reserved      |reserved
|`ON`                         |reserved      |reserved
|`OPTION`                     |reserved      |reserved
|`OR`                         |reserved      |reserved
|`ORDER`                      |reserved      |reserved
|`OUTER`                      |reserved      |reserved
|`RIGHT`                      |reserved      |reserved
|`SELECT`                     |reserved      |reserved
|`SESSION`                    |              |reserved
|`SET`                        |reserved      |reserved
|`TABLE`                      |reserved      |reserved
|`THEN`                       |reserved      |reserved
|`TO`                         |reserved      |reserved
|`TRUE`                       |reserved      |reserved
|`USING`                      |reserved      |reserved
|`WHEN`                       |reserved      |reserved
|`WHERE`                      |reserved      |reserved
|`WITH`                       |reserved      |reserved

|===