Can anybody think of an example where "select count(*) from..." is
different from "select count(columnA) from...." in terms of performance?
For example, what if columnA is indexed?
"TK" <ab****************@rogers.com> wrote in message
news:ow********************@news01.bloor.is.net.ca ble.rogers.com...
| Can anybody think of an example where "select count(*) from..." is
| different from "select count(columnA) from...." in terms of performance?
| For example, what if columnA is indexed?
|
| Thanks in advance.
| -tk
google COUNT(*) -- there's been many postings on this
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