Yes, that's exactly correct.  For Rushmore to kick in, the left side of
your condition must match a tag's fields.  The tag name is irrelevant.

So in your example, TABLEA must have an index on FGITEM.  The tag name does
not matter.


Fred

On Fri, Jun 26, 2015 at 9:08 AM, Philip Borkholder <plbor...@netzero.net>
wrote:

> Hello all,
>
> I know that Rushmore tech comes into play when you JOIN tables using
> fields that have index tags in their respective tables.
>
> However, does the tag have to match the name of the actual field being
> indexed?
> Reason I ask, in an app I support, performance was slow when joining two
> tables together on one key field.
>
> Let's say the field is:
> FGITEM
> The index tag is just ITEM
>
> The Join statement had:
>
> SELECT tableA.*, tableB.descrip FROM tableA INNER JOIN tableB on
> tableA.FGITEM = tableB.ITEM
>
> Once I added a new index TAG to tableA
> FGITEM   tag FGITEM
>
> The query ran much faster.
>
> Does this make sense or am I misunderstanding it?
>
> Thank you,
> Philip Borkholder
> Vicksburg, MI
> ____________________________________________________________
> Old School Yearbook Pics
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[excessive quoting removed by server]

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