troubleshooting Question

T-SQL SQL Server 2000

Avatar of SQLM_M
SQLM_MFlag for India asked on
Microsoft SQL Server 2005Microsoft SQL Server 2008
9 Comments1 Solution315 ViewsLast Modified:
please suggest how to improve the performance for the below update statement.

General  substring(a.callednb, 1,11) need to provide other alternative method

update a
set a.trff_pfx = b.prefixcode,A.Destination=B.destcode   from #dest_asr  a , w_prefix B
where substring(a.callednb, 1,11) = b.prefixcode
and b.prefixlen = 11 and a.trff_pfx is null

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