At my job I have to maintain many different databases (most of them are MySQL, Postgres). Also with different shemas and applications running on them. Unfortunally many tables don't have enough indexes, some of the databases don't have indexes at all, which is really a bad situation at the moment and pumping the load up.
So I'am looking for a solution to autogenerate the indexes, I thought about the following ideas:

1) directly interact with the DBI (most of the applications are written in perl, lucky i'am) and analyze the queries for joins, where, orders and generate the index for the columns.

2) doing the same as in 1, but just log all the queries on the database level and parse the log file.

well, I'am not sure but I think this could be a problem which is maybe common: often the database and the application people are not the same and the applications get changed all the time. so, probably somebody allready came up with a more flexible solution?

Some of my wishes:
-database independant (or at least portable)
-priority for indexes (like how often the potential index could be used)

Thank you for your time you needed to read this post and specially for your replys.

In reply to Autogenerate SQL Indexes? by knoebi

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