On Thursday, July 11, 2024, FREYBURGER Simon (SNCF VOYAGEURS / DIRECTION GENERALE TGV / DM RMP YIELD MANAGEMENT) <simon.freyburger@sncf.fr> wrote:
Also, It might not be related, but I have suspiciously similar slow reads when I am inserting in database, could it be related ? I’m using a 3 steps process to insert my lines in the table :
COPY into a temporary table
DELETE FROM on the perimeter I will be inserting into
INSERT … INTO mytable SELECT … FROM temporarytable ON CONFLICT DO NOTHING
Is it possible to parallelize the scans during the modify step ?