mvzink opened a new pull request, #2172:
URL: https://github.com/apache/datafusion-sqlparser-rs/pull/2172
Adds support for MySQL-specific `SELECT` modifiers that appear after the
`SELECT` keyword. Grammar from the [docs]:
```sql
SELECT
[ALL | DISTINCT | DISTINCTROW ]
[HIGH_PRIORITY]
[STRAIGHT_JOIN]
[SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT]
[SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS]
select_expr [, select_expr] ...
```
Manual testing shows that these options can appear in any order relative to
each other, so for the sake of fidelity, we parse this separately from how we
parse distinct and other options for other dialects, in a new
`Parser::parse_select_modifiers` method.
`DISTINCTROW` is a legacy (but not deprecated) synonym for `DISTINCT`, so it
just gets canonicalized as `DISTINCT`.
[docs]: https://dev.mysql.com/doc/refman/8.4/en/select.html
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