CreateQuery t (children 3)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UUID
   ColumnDeclaration d (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function MergeTree
  Function toDate (children 1)
   ExpressionList (children 1)
    Identifier d
  Identifier id
