我想按日期和域計數記錄。 php查詢與phpmyadmin一起工作正常,但在PHP代碼它返回null。我想按照今天,明天的日期顯示。按日期和域加入表和計數。加入查詢不起作用返回null結果
wp_domain_prefix表
wp_projectid_1表
PHP查詢
<?php
$querys = "SELECT `wp_domain_prefix.domain`, count(`wp_projectid_1.record_id`)
FROM `wp_domain_prefix`, `wp_projectid_1` WHERE `wp_domain_prefix.domain` = `wp_projectid_1.domain` AND
`wp_projectid_1.datess` BETWEEN '2014-10-07' AND '2014-10-08'";
$record = mysql_query($querys);
echo $record[count('wp_projectid_1.record_id')];
?>
不工作,你的意思是 <?PHP $ querys =「SELECT'wp_domain_prefix.domain',計數('wp_projectid_1.record_id ')FROM'wp_domain_prefix','wp_projectid_1' WHERE'wp_domain_prefix.domain'='wp_projectid_1.domain'AND 'wp_projectid_1.datess' BETWEEN'2014-10-07'AND'2014-10-08'「; $ record = mysql_query($ querys); echo $ record [count('wp_projectid_1.record_id')]; ?> – 2014-10-08 06:03:14