SQL - Converting 24-hour (“military”) time (2145) to “AM/PM time” (9:45 pm)

Question

I have 2 fields I\'m working with that are stored as smallint military structured times.
Edit I\'m running on IBM Informix Dynamic Server Version 10.00.FC9

Answer 1

Ah, a fellow Jenzabar user (Jonathan, don't be too cruel about the schemas. They are literally decades old). Surprised you didn't ask this on the CX-Tech list. I'd've sent you an RCS-ready stored procedure for CX.

-sw

{
 Revision Information (Automatically maintained by 'make' - DON'T CHANGE)
 -------------------------------------------------------------------------
 $Header$
 -------------------------------------------------------------------------
}
procedure       se_get_inttime
privilege       owner
description     "Get time from an integer field and return as datetime"
inputs          param_time integer      "Integer formatted time"
returns         datetime hour to minute "Time in datetime format"
notes           "Get time from an integer field and return as datetime"

begin procedure

DEFINE tm_str VARCHAR(255);
DEFINE h INTEGER;
DEFINE m INTEGER;

IF (param_time < 0 OR param_time > 2359) THEN
RAISE EXCEPTION -746, 0, "Invalid time format. Should be: 0 - 2359";
END IF

LET tm_str = LPAD(param_time, 4, 0);

LET h = SUBSTR(tm_str, 1, 2);

IF (h < 0 OR h > 23) THEN
RAISE EXCEPTION -746, 0, "Invalid time format. Should be: 0 - 2359";
END IF

LET m = SUBSTR(tm_str, 3, 4);

IF (m < 0 OR m > 59) THEN
RAISE EXCEPTION -746, 0, "Invalid time format. Should be: 0 - 2359";
END IF

RETURN TO_DATE(h || ':' || m , '%R');

end procedure

grant
    execute to (group public)