Tuple decoding functions.
These functions extracts and decodes components from a returned tuple. The first argument is the index, starting from 0. The conversion performed are the inverse of the same named functions of PARAM, so the documentation is not repeated here.
Note! Calls to these functions are only valid during a callback from one of the query execution functions. Returning a partial call or embedding the call in a returned monad leads to undefined behaviour.
val length : t -> intval is_null : int -> t -> boolval bool : int -> t -> boolval int : int -> t -> intval int32 : int -> t -> int32val int64 : int -> t -> int64val float : int -> t -> floatval string : int -> t -> stringval bytes : int -> t -> bytesval date_string : int -> t -> stringval date_tuple : int -> t -> int * int * intval date_cl : int -> t -> CalendarLib.Date.tval utc_float : int -> t -> floatval utc_string : int -> t -> stringval utc_cl : int -> t -> CalendarLib.Calendar.t