CreateQuery t (children 3)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration ts (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier id
    Identifier ts
  Set
