Hi, 
 
  I have a code snippet here as in the following:
 
//Switch statements between the four options 
switch($string) {
case "":
$string= "NOT book.author='All'";
break;
default:
$string= $string . "AND NOT book.author='All'";
break;
}
  This code does work, but I am wondering if it is possible in the switch 
statement clauses for me to do something like case does not equal to a certain 
author name if I don't want $string with that content to be processed. or, do I 
always use default in this case? 
 
Thanks in advance. 
 
Alice  
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