SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier bftest
   Function hasAll (children 1)
    ExpressionList (children 2)
     Identifier y
     Function array (children 1)
      ExpressionList (children 2)
       Function toDecimal32 (children 1)
        ExpressionList (children 2)
         Literal UInt64_123
         Literal UInt64_3
       Literal UInt64_2
 Identifier Null
