Performance of Query Execution

Hi All,

I am curious to know about how execution will happen for the below scenario and which one would be faster.

Scenario: I have one table X having 50 columns and another table Y having 4 columns. Both table containssame no of records (1 millon). Let's say when I try to retrieve the data from the tables with below query.

"Select Col1,Col2,Col3,Col4 From Table X" or "SelectCol1,Col2,Col3,Col4 From Table Y"

Will there be any execution time difference?

Regards, Suraj Fegade (Microsoft Dynamics CRM)