SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier h
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Literal Array_[UInt64_1] (alias a)
   Function in (children 1)
    ExpressionList (children 2)
     Identifier WatchID
     Subquery (children 1)
      SelectWithUnionQuery (children 1)
       ExpressionList (children 1)
        SelectQuery (children 1)
         ExpressionList (children 1)
          Function toUInt64 (children 1)
           ExpressionList (children 1)
            Literal UInt64_1
   Function and (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier EventDate
       Literal \'2020-06-10\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier CounterID
       Literal UInt64_16671268
