MySQL confuses me sometimes. Everyone says trig functions are slow, but slower still seems to be just retrieving lots of rows.
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@wellerstein trig functions are not slow relative to database queries
@bsdphk It just strikes me as counterintuitive that running an atan2 on every row of a table is quicker than just retrieving all those rows
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@wellerstein@bsdphk Minimising import/export is ideal for most database calcs; if some rows can be grouped before DB calc, even better.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@wellerstein Modern CPUs have fast trig in hardware.Thanks. Twitter will use this to make your timeline better. UndoUndo
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