diff --git a/query-service-impl/src/main/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverter.java b/query-service-impl/src/main/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverter.java
index d3dcd4d8..1d99641b 100644
--- a/query-service-impl/src/main/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverter.java
+++ b/query-service-impl/src/main/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverter.java
@@ -450,7 +450,9 @@ private String convertLiteralToString(LiteralConstant literal, Params.Builder pa
     String ret = null;
     switch (value.getValueType()) {
       case STRING_ARRAY:
-        ret = buildArrayValue(value.getStringArrayList(), paramsBuilder::addStringParam);
+        List<String> values =
+            value.getStringArrayList().size() > 0 ? value.getStringArrayList() : List.of("null");
+        ret = buildArrayValue(values, paramsBuilder::addStringParam);
         break;
       case BYTES_ARRAY:
         ret = buildArrayValue(value.getBytesArrayList(), paramsBuilder::addByteStringParam);
diff --git a/query-service-impl/src/test/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverterTest.java b/query-service-impl/src/test/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverterTest.java
index f2c53196..605e00e1 100644
--- a/query-service-impl/src/test/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverterTest.java
+++ b/query-service-impl/src/test/java/org/hypertrace/core/query/service/pinot/QueryRequestToPinotSQLConverterTest.java
@@ -520,6 +520,29 @@ public void testSQLiWithStringArrayFilter() {
         executionContext);
   }
 
+  @Test
+  public void testSQLiWithStringDefaultArrayFilter() {
+    Builder builder = QueryRequest.newBuilder();
+    builder.addSelection(createColumnExpression("Span.displaySpanName"));
+
+    Filter filter = createInFilter("Span.displaySpanName", List.of());
+    builder.setFilter(filter);
+
+    ViewDefinition viewDefinition = getDefaultViewDefinition();
+    defaultMockingForExecutionContext();
+
+    assertPQLQuery(
+        builder.build(),
+        "SELECT span_name FROM SpanEventView WHERE "
+            + viewDefinition.getTenantIdColumn()
+            + " = '"
+            + TENANT_ID
+            + "' "
+            + "AND span_name IN ('null')",
+        viewDefinition,
+        executionContext);
+  }
+
   @Test
   public void testSQLiWithBooleanArrayFilter() {
     Builder builder = QueryRequest.newBuilder();