Fields parsing with quotes or slash failed in create global binding

[zimulala]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   If possible, provide a recipe for reproducing the error.

tidb> show create table t;
+-------+-----------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                                      |
+-------+-----------------------------------------------------------------------------------------------------------------------------------+
| t     | CREATE TABLE `t` (
  `a` varchar(512) DEFAULT NULL,
  KEY `idx` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin |
+-------+-----------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

CREATE GLOBAL BINDING FOR  select * from t where a BETWEEN "a" and "b" USING select * from t use index(idx) where a BETWEEN "a" and "c";

2. What did you expect to see?
   The statement executed successfully.

3. What did you see instead?

tidb>  CREATE GLOBAL BINDING FOR  select * from t where a BETWEEN "a" and "b" USING select * from t use index(idx) where a BETWEEN "a" and "c";
ERROR 1105 (HY000): line 1 column 48 near "\"a\" and \"c\""

4. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?
   tag: v3.0.2