Basics...
depends upon Cardinality of the that single column( col1), Col1 is not
the unique as primary key on three columns(composite key)
That's why, "it may"
Regs,
Vivek Agarwal.


> Why "may"? Do you know any exceptions?
>
>
>
>
> > It may...
> > Regs,
> > Vivek Agarwal
> >
>
>
>
>
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