Balvie <ener(at)ibb(dot)nl> writes:
> UPDATE b1_naam
> SET telnr = t.telnr
> FROM b1_telco as t
> WHERE
> b1_naam.relcode = b1_telco.relcode AND
^^^^^^^^ should be t
> b1_naam.naam like 'Bakke%';
Less-obsolete versions of Postgres would have warned you about this,
or even reported it as an error.
regards, tom lane