Dear Sir/Madam
I got an error when I execute the following select sentence. Would you please solve the problem for me? Thank you . Alan Fu. postgres=# \set VERBOSITY verbose postgres=# SELECT round(cast(coalesce(sum(ST_length(geography(geometry)))/1000,0) as NUMERIC),4)||'KM' field_value from had_link; ERROR: XX000: cannot update SecondarySnapshot during a parallel operation CONTEXT: SQL statement "SELECT proj4text FROM public.spatial_ref_sys WHERE srid = 4326 LIMIT 1" parallel worker LOCATION: GetLatestSnapshot, snapmgr.c:387
