Hello
After upgrading a Db from Pg13 (Centos) to Pg16(Ubuntu) some queries on
a simple, large table (200M rows) are very slow
id integer not null
status char(4) not null
status_tstamp timestamp
<... other columns ...>
If I create indexes on
* status, status_tstamp
* status_tstamp when status_timestamp is not null
Queries for a set date range for a given status are good and perform
similarly to Pg13
Queries for a set date range are VERY slow compared to Pg13. A few other
queries on tables with indexes like
CREATE INDEX table_col ON table (col) WHERE col IS NOT NULL;
also appear to be slow.
Any ideas, observations or comments would be appreciated
Simon
--
Simon Windsor
Eml:simon.wind...@cornfield.me.uk
Mob: 0755 197 9733
“There is nothing in the world that some man cannot make a little worse and
sell a little cheaper, and he who considers price only is that man's lawful
prey.”
