diff --git a/core/src/main/java/org/opensearch/sql/planner/physical/ProjectOperator.java b/core/src/main/java/org/opensearch/sql/planner/physical/ProjectOperator.java
index 496e4e6ddb..57cba826ee 100644
--- a/core/src/main/java/org/opensearch/sql/planner/physical/ProjectOperator.java
+++ b/core/src/main/java/org/opensearch/sql/planner/physical/ProjectOperator.java
@@ -8,6 +8,8 @@
 
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableMap.Builder;
+
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
@@ -19,6 +21,7 @@
 import org.opensearch.sql.data.model.ExprTupleValue;
 import org.opensearch.sql.data.model.ExprValue;
 import org.opensearch.sql.data.model.ExprValueUtils;
+import org.opensearch.sql.data.type.ExprCoreType;
 import org.opensearch.sql.executor.ExecutionEngine;
 import org.opensearch.sql.expression.NamedExpression;
 import org.opensearch.sql.expression.parse.ParseExpression;
@@ -56,6 +59,7 @@ public boolean hasNext() {
   public ExprValue next() {
     ExprValue inputValue = input.next();
     ImmutableMap.Builder<String, ExprValue> mapBuilder = new Builder<>();
+    ExprValue result = ExprValueUtils.collectionValue(new ArrayList<>());
 
     // ParseExpression will always override NamedExpression when identifier conflicts
     // TODO needs a better implementation, see https://github.com/opensearch-project/sql/issues/458
@@ -65,7 +69,16 @@ public ExprValue next() {
           .filter(parseExpr -> parseExpr.getNameOrAlias().equals(expr.getNameOrAlias()))
           .findFirst();
       if (optionalParseExpression.isEmpty()) {
-        mapBuilder.put(expr.getNameOrAlias(), exprValue);
+        if (exprValue.type().equals(ExprCoreType.ARRAY)) {
+          for (ExprValue exprVal : exprValue.collectionValue()) {
+            mapBuilder.put(expr.getNameOrAlias(), exprVal);
+            result.collectionValue().add(ExprTupleValue.fromExprValueMap(mapBuilder.build()));
+            mapBuilder = new Builder<>();
+          }
+        }
+        else {
+          mapBuilder.put(expr.getNameOrAlias(), exprValue);
+        }
         continue;
       }
 
@@ -85,6 +98,8 @@ public ExprValue next() {
         mapBuilder.put(parseExpression.getNameOrAlias(), parsedValue);
       }
     }
+    if (result.collectionValue().size() > 0)
+      return result;
     return ExprTupleValue.fromExprValueMap(mapBuilder.build());
   }
 
diff --git a/opensearch/src/main/java/org/opensearch/sql/opensearch/executor/OpenSearchExecutionEngine.java b/opensearch/src/main/java/org/opensearch/sql/opensearch/executor/OpenSearchExecutionEngine.java
index 9a136a3bec..5dc10234e0 100644
--- a/opensearch/src/main/java/org/opensearch/sql/opensearch/executor/OpenSearchExecutionEngine.java
+++ b/opensearch/src/main/java/org/opensearch/sql/opensearch/executor/OpenSearchExecutionEngine.java
@@ -12,6 +12,7 @@
 import lombok.RequiredArgsConstructor;
 import org.opensearch.sql.common.response.ResponseListener;
 import org.opensearch.sql.data.model.ExprValue;
+import org.opensearch.sql.data.type.ExprCoreType;
 import org.opensearch.sql.executor.ExecutionContext;
 import org.opensearch.sql.executor.ExecutionEngine;
 import org.opensearch.sql.executor.Explain;
@@ -46,7 +47,13 @@ public void execute(PhysicalPlan physicalPlan, ExecutionContext context,
             plan.open();
 
             while (plan.hasNext()) {
-              result.add(plan.next());
+              ExprValue nextPlan = plan.next();
+
+              if (nextPlan.type().equals(ExprCoreType.ARRAY))
+                for (ExprValue value: nextPlan.collectionValue())
+                  result.add(value);
+              else
+                result.add(nextPlan);
             }
 
             QueryResponse response = new QueryResponse(physicalPlan.schema(), result);