Caché ObjectScript Reference - InterSystems Documentation

Math and Time Functions$ZDATEHValidates and converts a date.$ZDATEH(date,dformat,monthlist,yearopt,startwin,endwin,mindate,maxdate,erropt)$ZDH(date,dformat,monthlist,yearopt,startwin,endwin,mindate,maxdate,erropt)ParametersdatedformatmonthlistyearoptstartwinendwinmindatemaxdateerroptAn expression that evaluates to a date string. $ZDATEH converts thisdate string to $HOROLOG format. This can be either an explicit date(specified in various formats) or the string “T” or “t”, representing thecurrent date.The “T” or “t” string can optionally include a signed integeroffset. For example “T-7” meaning seven days prior to the currentdate.Optional — Format option for the date, specified as an integer code.Optional — A string or the name of a variable that contains the monthnames you supplied.Optional — A code that specifies whether to represent years as twoorfour-digit valuesOptional — The start of the sliding window during which dates mustbe represented with two-digit years.Optional — The end of the sliding window during which dates arerepresented with two-digit years.Optional — The lower limit of the range of valid dates.Optional — The upper limit of the range of valid dates.Optional — This parameter suppresses error messages associatedwith invalid or out of range date values.DescriptionThe $ZDATEH function validates a specified date and converts it from any of the formatssupported by the $ZDATE function to $HOROLOG format. The exact action $ZDATEHperforms depends on the parameters you use.Simple $ZDATEH Format$ZDATEH(date) converts a date in the form MM/DD/[YY]YY to the first integer in the$HOROLOG format. (The $HOROLOG format consists of two integers: the first integer334 Caché ObjectScript Reference