wt_activerecord_index_spy
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A gem to spy queries running with Active Record and report missing indexes
> Could it be an idea to try to install a "representative dataset" for testing the gem? For example using a fuller list of Brazilian municipalities + a longer list...
It's very hard to figure out if a table needs a new index looking at the result of a PostgreSQL EXPLAIN query. PostgreSQL's EXPLAIN result is not deterministic and varies...
Currently, this gem generates a pretty ugly HTML table: It would be nice to add some style to that