Performance issue with selection of data on a table

Hi,

I am facing an issue with the performance. The selection of data from table is taking more than 20 sec to retrieve close to 300k records. Created a clustered index on col1 and col2 but no improvement.

Select Distinct Col1,Col2,Col3 + CHAR(13) + CHAR(10) Col3
From Table
Where Col3 IS NOT NULL
Order by Col1,Col2

Any suggestions would be really helpful!

Thanks,Eshwar.

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