CreateQuery sites (children 3)
 Identifier sites
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration Domain (children 1)
    DataType UInt8
   ColumnDeclaration Users.UserID (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt64
   ColumnDeclaration Users.Dates (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType Date
 Storage definition (children 3)
  Function MergeTree
  Identifier Domain
  Set
