Fix: recover xor

Author: xiaojun

core/src/test/java/org/apache/calcite/sql/test/SqlAdvisorTest.java

@@ -334,8 +334,8 @@ class SqlAdvisorTest extends SqlValidatorTestCase {
           "KEYWORD(SIMILAR)",
           "KEYWORD(SUBMULTISET)",
           "KEYWORD(SUCCEEDS)",
-          "KEYWORD(^)",
           "KEYWORD([)",
+          "KEYWORD(^)",
           "KEYWORD(||)");
 
   private static final List<String> WHERE_KEYWORDS =