fix IT and doctest

Signed-off-by: xinyual <xinyual@amazon.com>

Author: xinyual

docs/user/ppl/cmd/patterns.rst

@@ -69,7 +69,7 @@ PPL query::
     |-----------------------+----------------|
     | amberduke@pyrami.com  | @.             |
     | hattiebond@netagy.com | @.             |
-    | null                  |                |
+    | null                  | null           |
     | daleadams@boink.com   | @.             |
     +-----------------------+----------------+
 

integ-test/src/test/java/org/opensearch/sql/calcite/standalone/CalcitePPLJoinIT.java

@@ -273,7 +273,7 @@ public void testComplexAntiJoin() {
         executeQuery(
             String.format(
                 "source = %s | where country = 'Canada' OR country = 'England' | left anti join"
-                    + " left=a, right=b ON a.name = b.name %s | sort a.age",
+                    + " left=a, right=b ON a.name = b.name %s | sort a.age | fields name, country, state, month, year, age",
                 TEST_INDEX_STATE_COUNTRY, TEST_INDEX_OCCUPATION));
     verifySchema(
         actual,