>Hi everybody,
>
>I'll try to rephrase my previous post, since I got 0 answers. Suppose, I have two tables, which I want to join:
>Table1 with field code1 and index on code1 tag code1
>Table2 with field code2 and index on code2 tag code2
>
>select * from Table1 inner join table2 on code1=code2 ...
>It seems to me, that if tag names are different (code1 and code2), these indexes aren't used in optimization. Instead SQL creates temp index.
>
>Could somebody confirm this behavior? Why it's so?
>

Rushmore uses index expressions, not names, to decide what index to use.