fixes

Author: bpintea

x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/operator/lookup/QueryList.java

@@ -146,6 +146,7 @@ final Query getQuery(int position) {
         if (aliasFilter != null && aliasFilter != AliasFilter.EMPTY) {
             try {
                 builder.add(aliasFilter.getQueryBuilder().toQuery(searchExecutionContext), BooleanClause.Occur.FILTER);
+                builderHasClauses = true;
             } catch (IOException e) {
                 throw new UncheckedIOException("Error while building query for alias filter", e);
             }

x-pack/plugin/esql/src/internalClusterTest/java/org/elasticsearch/xpack/esql/action/LookupFromIndexIT.java

@@ -235,6 +235,7 @@ private void runLookup(DataType keyType, PopulateIndices populateIndices) throws
                 "lookup",
                 new FieldAttribute.FieldName("key"),
                 List.of(new Alias(Source.EMPTY, "l", new ReferenceAttribute(Source.EMPTY, "l", DataType.LONG))),
+                null,
                 Source.EMPTY
             );
             DriverContext driverContext = driverContext();