zend distinct

/*
10.4.3.10. Adding the DISTINCT Query Modifier

The distinct() method enables you to add the 

DISTINCT keyword to your SQL query.

Example 10.63. Example of the distinct() method
*/

<?php

// Build this query:
// SELECT DISTINCT p."product_name"
// FROM "products" AS p

 

$select=$db->select()
->distinct()
->from(array('p'=>'products'),'product_name');

UPDATE modifier to your SQL query 
*/

?>

/*
10.4.3.11. Adding the FOR UPDATE Query Modifier

The forUpdate() method enables you to add the FOR 

2：SELECT COUNT(DISTINCT(CIN_Number)) as NumberofCases, MMT_Number as NumberOfCase  FROM material

$select=$db->select() 
->from('material', 
array( 
'NumberOfCases'

 　　　　　　　　=>new Zend_Db_Expr('COUNT(DISTINCT CIN_Number)'), 
'MMT_Number' 
)) 
->group('MMT_Number');