SMJ, NL or HJ

From: <Rajesh.Rao_at_jpmchase.com>
Date: Fri, 03 May 2002 08:13:27 -0800
Message-ID: <F001.004576CC.20020503081327@fatcity.com>

Hello Gurus,

A SQL tuning question. Given three large tables with the same millions of rows, and all three are referenced in a query, without any filter, as under:

Select ..............................

from largetableA a, largeTableB b, largeTableC c where a.empnum = b.empnum
and a.empnum = c.empnum;

What would be the prefered way of joining these tables, Merge Join, Nested Loops or Hash Joins?

Thanks
Raj

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Author:
  INET: Rajesh.Rao_at_jpmchase.com

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