title: Hbase shell: how to scan rows based on specific multiple column values
body: <p>New to Hbase, don't have hive or impala configured. :-(
  Now wanted to scan rows of a table based on multiple column values
  let say having Table A with 4 columns aa, ab, ac, ad. I wanted all rows of the table which satisfied the values condition of column ab &amp; ad. </p>
  
  <p>And other query is how to query on multiple tables assuming have external key are presents in the tables.  </p>