2009/7/20 Robert James <srobertja...@gmail.com>

>
> Hi. I notice that when I do a WHERE x, Postgres uses an index, and when I
> do WHERE y, it does so as well, but when I do WHERE x OR y, it doesn't. Why
> is this so?


It's not clever enough.

And how can I shut this off?


Use UNION/UNION ALL if possible in your case.

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