CreateQuery f1 (children 3)
 Identifier f1
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration c0 (children 1)
    DataType Float64
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  StorageOrderByElement (children 1)
   Identifier c0
  Set
