pgx

Pure-OCaml PostgreSQL client library
IN THIS PACKAGE
Module Pgx . Value
type v

v is opaque because the exact contents depend on Postgres types, so you could have two v's with the same value but different internal data representation, for example if you did a SELECT 'a'::bytea vs SELECT 'a'::varchar, the internal representation will be different, but the actual data if you use to_binary or to_string will be the same.

val compare_v : v -> v -> int
val sexp_of_v : v -> Sexplib0.Sexp.t
type t = v option
include Ppx_compare_lib.Comparable.S with type t := t
val compare : t -> t -> int
val sexp_of_t : t -> Sexplib0.Sexp.t
exception Conversion_failure of string
val required : ( 'a -> 'b ) -> 'a option -> 'b
val opt : ( 'a -> t ) -> 'a option -> t
val null : t
val of_binary : string -> t
val to_binary_exn : t -> string
val to_binary : t -> string option
val of_bool : bool -> t
val to_bool_exn : t -> bool
val to_bool : t -> bool option
val of_float : float -> t
val to_float_exn : t -> float
val to_float : t -> float option
type hstore = (string * string option) list
val compare_hstore : hstore -> hstore -> int
val sexp_of_hstore : hstore -> Sexplib0.Sexp.t
val of_hstore : hstore -> t
val to_hstore_exn : t -> hstore
val to_hstore : t -> hstore option
type inet = Ipaddr.t * int
val compare_inet : inet -> inet -> int
val sexp_of_inet : inet -> Sexplib0.Sexp.t
val of_inet : inet -> t
val to_inet_exn : t -> inet
val to_inet : t -> inet option
val of_int : int -> t
val to_int_exn : t -> int
val to_int : t -> int option
val of_int32 : int32 -> t
val to_int32_exn : t -> int32
val to_int32 : t -> int32 option
val of_int64 : int64 -> t
val to_int64_exn : t -> int64
val to_int64 : t -> int64 option
val of_list : t list -> t
val to_list_exn : t -> t list
val to_list : t -> t list option
type point = float * float
val compare_point : point -> point -> int
val sexp_of_point : point -> Sexplib0.Sexp.t
val of_point : point -> t
val to_point_exn : t -> point
val to_point : t -> point option
val of_string : string -> t
val to_string_exn : t -> string
val to_string : t -> string option
val unit : t
val to_unit_exn : t -> unit
val to_unit : t -> unit option
type uuid = Uuidm.t
val compare_uuid : uuid -> uuid -> int
val sexp_of_uuid : uuid -> Sexplib0.Sexp.t
val of_uuid : uuid -> t
val to_uuid_exn : t -> uuid
val to_uuid : t -> uuid option
val convert_failure : ?hint:string -> string -> string -> _

convert_failure type_ str raises Convert_failure with a useful error message. Add ~hint if there's additional info you can give the user about the error.