SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (alias cnt) (children 1)
     ExpressionList
   Literal UInt64_0
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier cnt
     Literal UInt64_0
