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[英]how to count the number of rows returned by query in Codeigniter with Datamapper
[英]Codeigniter run mysql query and echo number of returned rows
<?=$this->db->count_all_results('users')?>
嗨,我被困在某事上。 如何运行如下所示的查询计数并回显所有返回的行? 我目前正在使用上述声明,但我需要这种改进。
<?php $aa = $this->db->query("SELECT * FROM users WHERE itemNumber = 1");
使用num_rows()方法
<?php
$aa = $this->db->query("SELECT * FROM users WHERE itemNumber = 1");
echo $aa->num_rows();
?>
$this->db->query("SELECT u.*, COUNT(u_all.*) FROM users u, users u_all WHERE u.itemNumber = 1");
$numRows = $this->db->query("SELECT count(*) FROM users WHERE itemNumber = 1");
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