Notes on Installing PostgreSQL on All Platforms

If you are using PostgreSQL, you will need to increase the join collapse limit. Edit postgresql.conf and change the following line:

# join_collapse_limit = 8

to

join_collapse_limit = 10

If you do not do this step, you may see the following error when running complex queries: org.postgresql.util.PSQLException: ERROR: failed to build any 8-way joins

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