RE: Add different Time Zone set up

Dude — Fri, 11 Dec 2020 06:30:19 GMT

There are two ways to update the time zone for already existing data.

1. From Appian Process while writing to DB or updating in DB

2. From Database stored procedure

If you use Appian to store the timezone date, use local( datetime, [timezone] ) or gmt( datetime, [timezone] ). It depends on wether you want to Subtracts a time zone offset from a given Date and Time or not.

If you want to store the timezone date using database functions, use the stored procedure to update the new column.

For database reference. https://docs.oracle.com/cd/E11882_01/server.112/e10729/ch4datetime.htm#NLSPG238

For your scenario, second option is relevant because you are planning to add new column.

RE: Add different Time Zone set up

Chris — Thu, 10 Dec 2020 17:13:38 GMT

Can you expand on your use case a little - are you giving the user a datetime range to enter say, yesterday @ 10 AM to today @ 10 AM, then filtering records where a dateime field lands in that range for the selected timezone? Or otherwise?

I'm not sure yet that additional fields in a SQL view would be the answer, but further thinking will depend on the use case. In SQL you can always apply the DATEADD() function to shift a field's timezone, but it might be more appropriate to apply the shift in Appian something like:

a!queryFilter(
  field: "dateTimeField",
  operator: "between",
  value: {
    ri!startDateTime+ri!timezoneOffset,
    ri!endDateTime+ri!timezoneOffset
  }
)