Generally, we should use JOIN clause for joining tables unless the DBMS is a legacy DB like Oracle 8.
Also, I found there were some unused tables in the FROM clause in Postgres schema_queries that probably made the query slow. df13f55
why not use JOIN statement for joining tables?
remove unused table from FROM clause
pg_namespace has not been used since this commit 29b0707
why not use JOIN statement for joining tables? (vol. 2)
No longer require database name for MySQL to allow cross database sel…
Signed-off-by: Jeremy Kemper <firstname.lastname@example.org>