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Hi,
Trying to convert a 13 digit JSON date column to date/time. In Edit Query I change my JSON column,["Column1.Date - Copy"] to whole number.
I get 1.45731E+12 (1 example). I create a custom column and use this formula -> = ([#"Column1.Date - Copy"]/1000+7200)/84600+25569. I get 42794.95745.
When I change the column format to Date/Time I get 28/02/2017 10:58am. This should be 07/03/2016.
Any ideas what I'm doing wrong?
As long as you're fine with precision of days you can use the Date.AddDays function, for instance as shown below.
= Table.AddColumn(#"Previous step", "New column name", each Date.AddDays(#date(1970,1,1),Int32.From(Number.FromText(Text.BetweenDelimiters([JsonDateColumn],"/Date(",")/"))/24/3600/1000)))
In case anyone else needs a simpler solution, this is what worked for me.
#"Add Column" = Table.AddColumn(#",Previous Step Name", "<new column name>", each (#datetime(1970, 1, 1, 0, 0, 0 ) + #duration(0, 0, 0, [<field to change>]+36000/1000))),
Let's try this way
The step to execute to do the transformation
= Table.TransformColumns(#"<previous step name>",{{"<column name to update>", DateFromJson}})
The code of the Power Query custom function (create a new Query and post this code as it is)
let DateFromJson = (date as any) as any =>
let
input = if date is null then "/Date(00000000000000)/"else date,
Stripped = if Text.StartsWith(input, "/Date(") and Text.EndsWith(input, ")/") then Text.Range(input, 6, Text.Length(input) - 😎 else error "Not a date",
Position = Text.PositionOfAny(Stripped, {"+", "-"}, 1),
Parts = if Position < 0 then { Stripped, "0" } else { Text.Range(Stripped, 0, Position), Text.Range(Stripped, Position) },
NumberParts = { Number.FromText(Parts{0}), Number.FromText(Parts{1}) },
Result = Date.FromText("1/1/1970") + #duration(0, 0, 0, (NumberParts{0} + 36000 * NumberParts{1}) / 1000),
output = if Date.Year(Result) = 1970 then null else Result
in
output
in DateFromJson
This post from Curt should help you with the conversion:
Hi,
Thanks for the reply. I have zero knowledge of PQFL. In Curt's code what do I need to change to
make it applicable to me? Is the let Json.Date the column that contains the JSON date in my table?
Thanks
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