From: mcstockX@Xenquery   
      
   "TK"  wrote in message   
   news:ow4gc.161675$SQE.28760@news01.bloor.is.net.cable.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   
      
   -{ mcs   
      
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