So inspecting the elements of the tuple, they are both str, so hence
unicode.
Are you saying that if I convert those values to bytes it could improve
performance?
> I'd not bother with the literal_binds and just use a literal value:
>
> pkf = [(col == literal_column("'%s'" % v)) for (col, v) in zip(cols, x)]
>
> but also I'd look to see what the nature of "v" is, if it's like a
> Unicode object or something, you might be getting bogged down on the
> decode/encode or something like that. Sending as bytes() perhaps
> might change that.
>
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