table structure:
----------------
col1 col2
----- -----
01-mar-2012 11:12:46 01-mar-2012 11:12:10
01-mar-2012 11:12:46 01-mar-2012 11:11:23
Write a query to display the result as shown below:
col1 col2
----- -----
01-mar-2012 11:12:46 01-mar-2012 11:12:10
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