"Daniel Grace" <dgr...@wingsnw.com> writes:
> This test case fails with the above error:

> CREATE TABLE foo (
>       t VARCHAR
> );

> INSERT INTO foo (t) VALUES ('a'), ('a'), ('b'), ('b'), ('c');

> SELECT STRING_AGG(DISTINCT t ORDER BY t) FROM foo;

I've applied a patch for this.  Thanks for the report!

                        regards, tom lane

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