pravic commented on code in PR #2024:
URL:
https://github.com/apache/datafusion-sqlparser-rs/pull/2024#discussion_r2332055186
##########
src/parser/mod.rs:
##########
@@ -12260,6 +12260,27 @@ impl<'a> Parser<'a> {
})
}
+ /// Parse a CTE or CSE.
+ pub fn parse_cte_or_cse(&mut self) -> Result<CteOrCse, ParserError> {
+ Ok(if dialect_of!(self is ClickHouseDialect) {
+ if let Some(cse) = self.maybe_parse(Parser::parse_cse)? {
+ CteOrCse::Cse(cse)
+ } else {
+ CteOrCse::Cte(self.parse_cte()?)
+ }
+ } else {
+ CteOrCse::Cte(self.parse_cte()?)
+ })
+ }
+
+ /// Parse a CSE (`<expr> AS <ident>`).
+ pub fn parse_cse(&mut self) -> Result<Cse, ParserError> {
+ let expr = self.parse_expr()?;
+ let _after_as = self.parse_keyword(Keyword::AS);
+ let ident = self.parse_identifier()?;
Review Comment:
I guess, here we need to _expect_ this keyword.
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