public void setWindowFunctions(QuerySpecification node, List<FunctionCall> functions) {
    windowFunctions.put(NodeRef.of(node), ImmutableList.copyOf(functions));
  }
Analysis for predicates such as <code>x IN (subquery)</code> or <code>x = SOME (subquery)
</code>
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/analyzer/Analysis.java