Don't panic on weird infix garbage

Co-authored-by: Nikhil Benesch <nikhil.benesch@gmail.com>

src/sqlparser.rs

@@ -441,7 +441,7 @@ impl Parser {
                     } else if self.parse_keyword("BETWEEN") {
                         self.parse_between(expr, negated)
                     } else {
-                        panic!()
+                        self.expected("IN or BETWEEN after NOT", self.peek_token())
                     }
                 }
                 // Can only happen if `get_precedence` got out of sync with this function

tests/sqlparser_common.rs

@@ -209,6 +209,15 @@ fn parse_not() {
     //TODO: add assertions
 }
 
+#[test]
+fn parse_invalid_infix_not() {
+    let res = parse_sql_statements("SELECT c FROM t WHERE c NOT (");
+    assert_eq!(
+        ParserError::ParserError("Expected IN or BETWEEN after NOT, found: (".to_string()),
+        res.unwrap_err(),
+    );
+}
+
 #[test]
 fn parse_collate() {
     let sql = "SELECT name COLLATE \"de_DE\" FROM customer";