How can I convert the line string to multiline string in PostGIS?
I have converted geometry points to line string by this:
but by this command:
SELECT uuid_generate_v4() AS uuid, j."deviceId", st_astext(st_linemerge(st_union(j.shape))) AS multiLine FROM j group by date, j."deviceId" ;
I got this results:
It's result is again line string?