Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> writes:
> On Wed, 2024-02-21 at 19:13 +0000, PG Bug reporting form wrote:
>> However as of v16, this same statement causes the error: 'invalid input
>> syntax for type double precision: "Volume"'.
> That's not a bug. PostgreSQL just chose a different execution plan
> that happened to evaluate the SELECT list elements before filtering out
> the rows.
I'm not sure if it's a bug or not. I think we do promise that WHERE
filtering happens before SELECT list evaluation, and this query looks
like it ought to meet that condition. But without a self-contained
example it's hard to be entirely sure what's happening.
regards, tom lane