CreateQuery t_merge_tree (children 3)
 Identifier t_merge_tree
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration time (children 1)
    DataType Date
   ColumnDeclaration id (children 1)
    DataType String
   ColumnDeclaration name (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier time
  Identifier id
