xitep commented on code in PR #2162:
URL:
https://github.com/apache/datafusion-sqlparser-rs/pull/2162#discussion_r2727019526
##########
src/parser/mod.rs:
##########
@@ -14005,6 +14015,59 @@ impl<'a> Parser<'a> {
})
}
+ /// Parses an optional optimizer hint at the current token position
+ ///
+ ///
[MySQL](https://dev.mysql.com/doc/refman/8.4/en/optimizer-hints.html#optimizer-hints-overview)
+ ///
[Oracle](https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/Comments.html#GUID-D316D545-89E2-4D54-977F-FC97815CD62E)
+ fn parse_optional_optimizer_hint(&mut self) ->
Result<Option<OptimizerHint>, ParserError> {
+ let supports_multiline = dialect_of!(self is MySqlDialect |
OracleDialect | GenericDialect);
+ let supports_singleline = dialect_of!(self is OracleDialect |
GenericDialect);
+ if !supports_multiline && !supports_singleline {
+ return Ok(None);
+ }
+ loop {
+ let t = self.peek_nth_token_no_skip_ref(0);
+ match &t.token {
+ // ~ only the very first comment
Review Comment:
i'll revise the comment; it's that only the first comment appearing right
after the SELECT, INSERT... keywords can be a valid hint.
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