chore: Provide more meaningful SQLGlot error

superset/sql_parse.py

@@ -752,11 +752,21 @@ def _extract_tables_from_sql(self) -> set[Table]:
             statements = parse(self.stripped(), dialect=self._dialect)
         except SqlglotError as ex:
             logger.warning("Unable to parse SQL (%s): %s", self._dialect, self.sql)
-            dialect = self._dialect or "generic"
+
+            if isinstance(ex, ParseError):
+                error = ex.errors[0]
+                suffix = "Check the {dialect}manual for the right syntax to use near '{highlight}' at line {line}".format(
+                    dialect=self._dialect.capitalize() + " " if self._dialect else "",
+                    highlight=error["highlight"],
+                    line=f"{error['line']}:{error['col']}",
+                )
+            else:
+                suffix = ex.args[0]
+
             raise SupersetSecurityException(
                 SupersetError(
                     error_type=SupersetErrorType.QUERY_SECURITY_ACCESS_ERROR,
-                    message=__(f"Unable to parse SQL ({dialect}): {self.sql}"),
+                    message=__(f"You have an error in your SQL syntax. {suffix}"),
                     level=ErrorLevel.ERROR,
                 )
             ) from ex