Albe Laurenz schrieb am 13.11.2015 um 11:23:
>> My questions is whether these “index_*” indexes could have been created by 
>> postgresql or whether I
>> have an errant developer using some kinda third-party tool?
> 
> These indexes were *not* created by PostgreSQL.
> We are not Oracle.

Well, Oracle does not create indexes on its own either - it has the same 
strategy as Postgres:
Indexes are only created automatically for primary keys and unique constraints.

Thomas



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