title: Using ALIAS for Table Name have any performance issues
body: <p>Let's say I have two tables</p>
  
  <pre><code>Table : Department 
  Columns 
  1) DeptID 
  2) DeptName
  
  Table : Employee 
  Columns 
  1) EmpID
  2) EmpName
  3) DeptID
  </code></pre>
  
  <p>When I apply join on these two tables, I have to use <code>Employee.DeptID = Department.DeptID</code></p>
  
  <p>Now I restructure my table design and now my table will look like below:</p>
  
  <pre><code>Table : Department 
  Columns 
  1) DeptID 
  2) DeptName
  
  Table : Employee 
  Columns 
  1) EmpID
  2) EmpName
  3) Emp_DeptID
  </code></pre>
  
  <p>Now with these column names I dont have to use ALIAS, I can simply use <code>DeptID = Emp_DeptID</code></p>
  
  <p>My question is, using ALIAS hampers query performance in anyway??</p>