iffyio commented on code in PR #1541:
URL: 
https://github.com/apache/datafusion-sqlparser-rs/pull/1541#discussion_r1856850744


##########
src/parser/mod.rs:
##########
@@ -2935,12 +2935,23 @@ impl<'a> Parser<'a> {
             })
         } else if Token::LBracket == tok {
             if dialect_of!(self is PostgreSqlDialect | DuckDbDialect | 
GenericDialect) {
-                self.parse_subscript(expr)
+                let expr = self.parse_multi_dim_subscript(expr)?;
+                if self.dialect.support_period_map_access_key() {
+                    self.parse_map_access(expr, vec![])
+                } else {
+                    Ok(expr)
+                }

Review Comment:
   The first option to merge subscript into mapaccess sounds reasonable! I'm 
thinking we could skip the rename at least to start with to keep the breakage 
minimal and I'm imagining it shouldn't be as large of a change in that case, 
wdyt?



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