Re: JSON / ASP.NET AJAX Dates support in PostgreSQL

On 4/13/23 09:44, Sebastien Flaesch wrote:
> Hello,
>
> Is there an easy way to convert JSON data containing ASP.NET AJAX Dates
> into PostgreSQL timestamp?
>
> I have this kind of JSON data:
>
> {
>     "PurchaseOrder" : "4500000000",
>     "CreationDate" : "\/Date(1672358400000)\/",
>     "LastChangeDateTime" : "\/Date(1672692813062+0100)\/"
> }
>
> Warning: Note the backslash before the slashes!
> According to JSON spec this is valid JSON and used by AJAX Date format.
>
>
> When loading that data in Firefox, the JSON visualizer shows AJAX Date
> values as
>
> "/Date(1672358400000)/"
>
> and
>
> "/Date(1672692813062+0100)/"
>
> (without the backslash)
>
> My understanding is that backslash + slash = slash in JSON strings.

This looks like "milliseconds since the Unix epoch:

$ date -d @1672692813.062
Mon 02 Jan 2023 02:53:33 PM CST

Thus:
select to_timestamp(cast(1672692813062 as bigint))::timestamp;

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