public void setExpressionsList(List<Expression> expressionsList) {
    this.expressionsList = expressionsList;
  }
Check all expression in this list, ensure that the views created using them are legal. Check
follows above rules: 1. A legal view can NOT contain aggregation functions.

@return If all check passed, return true; else return false with failure message.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/view/ViewPaths.java