CreateQuery t_read_in_order (children 3)
 Identifier t_read_in_order
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration date (children 1)
    DataType Date
   ColumnDeclaration i (children 1)
    DataType UInt64
   ColumnDeclaration v (children 1)
    DataType UInt64
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier date
    Identifier i
  Set
