CreateQuery part_info (children 3)
 Identifier part_info
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration t (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function MergeTree
  Function toDate (children 1)
   ExpressionList (children 1)
    Identifier t
  Identifier t