At 19:42 14/06/2006, you wrote:
On Jun 14, 2006, at 16:42 UTC, [EMAIL PROTECTED] wrote:
> Might go a lot faster if you put a "+" in fron of
> recID. Like this:
>
> SELECT * FROM table WHERE +recID IN (...) ORDER BY dateFld
What magic is this? I checked both lang_expr.html and
lang_select.html but can't find any such syntax -- perhaps I missed
it. What does it do?
The '+' mads the optimizer, so it will not use any optimization. In
these case, the optimization engine (at where.c) takes a bad
decission. It's not a feature, is a side effect of the optimizer design.
