I have created my Excel sheet a.xls using Perl where I have field as:
date name eid
13/jan/2010 asa 3175
When I will compile next time and if date will be more than previous date then it has to update like wise:
date name eid
13/jan/2010 asa 3175
14/jan/2010 stone 3180
If the date will be of previous row date as last row date is 14/jan/2010
and current date is also 14/jan/2010
then it should not insert any row it should update the previous record only.