Heikki Linnakangas <hlinnakan...@vmware.com> writes:
> On 09/22/2014 07:47 AM, Rajeev rastogi wrote:
>> So my proposal is to skip the condition check on the first scan key 
>> condition for every tuple.

> The same happens in a single-column case. If you have a query like 
> "SELECT * FROM tbl2 where id2 > 'a'", once you've found the start 
> position of the scan, you know that all the rows that follow match too.

... unless you're doing a backwards scan.

                        regards, tom lane

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