首页 | 新闻 | 交流 | 问吧 | 文档 | 手册 | 下载 | 博客

zend distinct

作者:  时间: 2011-05-31

/*
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');

?>

/*
10.4.3.11. Adding the FOR UPDATE Query Modifier

The forUpdate() method enables you to add the FOR UPDATE modifier to your SQL query
*/

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');