Re: PL/pgSQL: « arr[j].a := v » works fine in PG Version 14.4, fails to compile in Version 11.2. Which version brought the fix?

["David G. Johnston" <david.g.johnston@xxxxxxxxx>]

On Mon, Jul 25, 2022 at 10:34 AM Bryn Llewellyn <bryn@xxxxxxxxxxxx> wrote:

I copied my testcase at the end. It runs OK and produces the output that I expect using PG Version 14.4. But using Version 11.9 (and earlier 11 sub-versions), it fails to compile with this error:

syntax error at or near "."

lhs[j].a := rhs[j].a;

      ^

If I comment out the "Ideal approach" loop, then it runs fine in PG 11 and produces the same output as the "Ideal approach" does in PG 14,

I looked at the Release Notes for each of Versions 14, 13, and 12:

From the change to this page I'd say v14:

https://www.postgresql.org/docs/14/plpgsql-statements.html

The release note for v14 say:

PL/PgSQL: 

Improve PL/pgSQL's _expression_ and assignment parsing (Tom Lane)
This change allows assignment to array slices and nested record fields.

David J.