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Please tell the execution time difference in sql server 2005
select table1.* from table1 inner join table2 on table1.id=table2.id
And
select t1.* from table t1, table t2 Where t1.id=t2.id
I’d expect the SQL Server query optimiser to evaluate these in exactly the same way so you should see no difference at all in execution.
You can confirm of course by checking out the execution plans that can be generated within Management Studio.