Is there a way to alter an index on a table without dropping it and
recreating it?

I have a table containing 4 columns
(col1, col2, col3, col4)

and an index that currently uses 3 of them (not the primary key)
idx = (col1, col2, col3)

I want to change the index to
idx = (col2, col3)

I need to do this the fastest way possible.

I am using 3.23.34 on a 
        windows machine

Thanks
        Roger Karnouk

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