title: Display Records exist in at least one table
body: <p>I have 3 tables (table1.table2 and table3),each table has an employee attendance with employee code</p>
  
  <p>Ex:</p>
  
  <pre><code>              Table 1    Table 2    Table 3
  Employee Code  1001       1001       no record
  Employee Code  no record  1002       no record
  Employee Code  1003       no record  1003
  </code></pre>
  
  <p>finally i need to display data below.</p>
  
  <pre><code>         Table 1 Table 2  Table 3         
  1001     Y       Y        N
  1002     N       Y        N
  1003     Y       N        Y
  </code></pre>
  
  <p>i.e i need to display employee those are present/absent on respective tables.</p>