On Wed, May 13, 2020 at 12:14 PM PG Bug reporting form <
noreply(at)postgresql(dot)org> wrote:
> The following bug has been logged on the website:
>
> Bug reference: 16435
> Logged by: prashant
> Email address: prashant_rokad(at)yahoo(dot)com
> PostgreSQL version: 12.2
> Operating system: Windows
> Description:
>
> Hi,
>
> we are upgrading postgresql from 9.2 to 12.2 and observed that
> "regexp_split_to_table" functions is giving different output in 12.2 than
> 9.2.
>
This was intentional. You will need to rewrite your query - probably by
moving the call to regexp_split_to_table to the FROM clause and leveraging
the LATERAL feature.
David J.