tmp2

Signed-off-by: junxiang Mu <1948535941@qq.com>

s3select/query/src/sql/dialect.rs

@@ -0,0 +1,18 @@
+use datafusion::sql::sqlparser::dialect::Dialect;
+
+#[derive(Debug, Default)]
+pub struct RustFsDialect;
+
+impl Dialect for RustFsDialect {
+    fn is_identifier_start(&self, ch: char) -> bool {
+        ch.is_alphabetic() || ch == '_' || ch == '#' || ch == '@'
+    }
+
+    fn is_identifier_part(&self, ch: char) -> bool {
+        ch.is_alphabetic() || ch.is_ascii_digit() || ch == '@' || ch == '$' || ch == '#' || ch == '_'
+    }
+
+    fn supports_group_by_expr(&self) -> bool {
+        true
+    }
+}