SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Literal \'bf: LowCardinality(String) hit\'
    Function count (children 1)
     ExpressionList
    Function sum (children 1)
     ExpressionList (children 1)
      Function equals (alias cond) (children 1)
       ExpressionList (children 2)
        Identifier lc
        Literal \'lc4\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function file (children 1)
       ExpressionList (children 1)
        Identifier bf_03263.parquet
   Function indexHint (children 1)
    ExpressionList (children 1)
     Identifier cond
