> From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
> My guess is that the original SQL was
>     WHERE ... date_from = current_timestamp
> This should be
>     WHERE ... date_from = localtimestamp
> if timestamp without tz is the intended column datatype.
Thank you. The problem was exactly this:
    current_timestamp: TIMESTAMP with TZ
    my attribute "date_from TIMESTAMP "  - without TZ
After change to
    WHERE ... date_from = localtimestamp
the plan worked just well.
> (it really sucks that SQL specifies "timestamp" to default to "without time
zone" ...)
Tzones is one area I never delt with and IMMEDIATELY ran into problem,
implicit type conversion is an evil.