2016-09-28 0:29 GMT+13:00 Vitaly Burovoy <vitaly.buro...@gmail.com>: > On 9/26/16, Patrick B <patrickbake...@gmail.com> wrote: > > 2016-09-27 16:22 GMT+13:00 Patrick B <patrickbake...@gmail.com>: > > I'm doing this now: > > > > sel AS ( > >> SELECT i.id AS c_id > >> FROM (select id, row_number() OVER (ORDER BY id) AS rn FROM ins_table_1) > >> i > >> JOIN rows s USING (rn) > >> ) > >> UPDATE table_2 SET c_id = > >> ( > >> SELECT c_id > >> FROM sel > >> ORDER BY c_id > >> ) > >> WHERE clientid = 124312; > > > > > > But I get *ERROR: more than one row returned by a subquery used as an > > expression* > > > > To update rows of one table by rows from another table you should use > UPDATE ... SET ... FROM ... WHERE ... > clause described in the docs[1] (see example around the sentence "A > similar result could be accomplished with a join:" and note below). > > [1] https://www.postgresql.org/docs/devel/static/sql-update.html > -- > Best regards, > Vitaly Burovoy >
clientid is the same for all the rows.... Your example doesn't work. And isn't much different than mine. Patrick
