> Not always.  The case for having (col1,col2) might be very
> compelling.

True. But in our case, the table has like 8M rows, so and col1 is some kind of 
job identifier, so it's evenly distributed. Col2 on the other hand is a 
customer id, so it has much higher cardinality. Previous DBA missed it during 
creation, and it was never loud enough in the logs for me to notice it until 
recently. Looks like I need to do a column-ordering audit. :)

> If only someone else would offer to do it for me....

Don't look at me. My C is rustier than a 50-year-old bike chain. :)



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