\i wm.sql

drop table if exists figures;
create table figures (name text, way geometry);
insert into figures (name, way) values ('fig3', ST_GeomFromText('LINESTRING(0 0, 12 0, 13 4, 20 2, 20 0, 32 0, 33 10, 38 16, 43 15, 44 10, 44 0, 60 0)'));

drop table if exists bends;
create table bends as (select * from detect_bends((select way from figures where name='fig3')));

--insert into figures (name, way) values ('Žeimena', (select st_linemerge(st_union(p.way)) from planet_osm_line p where p.name = 'Žeimena'))