CreateQuery nullable_minmax_index (children 3)
 Identifier nullable_minmax_index
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration k (children 1)
    DataType int
   ColumnDeclaration v (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType int
  ExpressionList (children 1)
   Index (children 2)
    Identifier v
    Function minmax (children 1)
     ExpressionList
 Storage definition (children 3)
  Function MergeTree
  Identifier k
  Set
