yoavcloud commented on code in PR #1678:
URL:
https://github.com/apache/datafusion-sqlparser-rs/pull/1678#discussion_r1929493962
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src/dialect/mod.rs:
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@@ -821,11 +821,24 @@ pub trait Dialect: Debug + Any {
false
}
+ /// Returns reserved keywords when looking to parse column
+ /// identifiers.
+ /// i.e. (unquoted) words that may not be used as column identifiers
+ /// for the dialect.
+ /// For example given: `SELECT <col> AS <alias> FROM T`. The returned
+ /// keywords are not allowed in `<col>` and `<alias>`
+ fn get_reserved_keywords_for_column_identifier(&self) -> &'static
[Keyword] {
Review Comment:
Theoretically, a dialect may have a different list of reserved keywords for
column identifiers and column aliases, and in some cases, the parser will need
to look ahead to make that decision accurately.
Perhaps we should adopt a unified approach to this check along the lines of
`Dialect::is_select_item_alias`?
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