odps support qualify identifier & alias

core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java

@@ -749,6 +749,7 @@ public class SQLExprParser extends SQLParser {
             case SHOW:
             case INOUT:
             case OUTER:
+            case QUALIFY:
                 sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
                 lexer.nextToken();
                 break;

core/src/main/java/com/alibaba/druid/sql/parser/SQLParser.java

@@ -283,6 +283,7 @@ public class SQLParser {
                 case REPEAT:
                 case USE:
                 case MOD:
+                case QUALIFY:
                 case OUT: {
                     String strVal = lexer.stringVal();
                     lexer.nextToken();

core/src/test/java/com/alibaba/druid/bvt/sql/odps/OdpsResourceTest.java

@@ -36,6 +36,10 @@ public class OdpsResourceTest extends TestCase {
         exec_test("bvt/parser/odps-9.txt");
     }
 
+    public void test_10() throws Exception {
+        exec_test("bvt/parser/odps-10.txt");
+    }
+
     public void exec_test(String resource) throws Exception {
         String input = TestUtil.getResource(resource);
         String[] items = input.split("---------------------------");

core/src/test/resources/bvt/parser/odps-10.txt

@@ -0,0 +1,6 @@
+select qualify.api_name
+from t_api qualify where qualify.api_name is not null;
+---------------------------
+SELECT qualify.api_name
+FROM t_api qualify
+WHERE qualify.api_name IS NOT NULL;