Selecting rows that corresponds from other table - php

Question

I have a product table that stores all products. Also I have a production table that stores productions.
I am using CodeIgniter and datamapper ORM.
Here is tables:
CREATE TABLE IF NOT EXISTS `products` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`kod_stok` varchar(15) COLLATE utf8_unicode_ci DEFAULT NULL,
`kod_lokal` varchar(10) COLLATE utf8_unicode_ci DEFAULT NULL,
`kod_firma` varchar(20) COLLATE utf8_unicode_ci NOT NULL,
`firma` varchar(15) COLLATE utf8_unicode_ci DEFAULT NULL,
`fabrika` varchar(10) COLLATE utf8_unicode_ci NOT NULL,
`proje` varchar(20) COLLATE utf8_unicode_ci NOT NULL,
`tanim` mediumtext COLLATE utf8_unicode_ci,
`saatlik_uretim` int(11) NOT NULL,
`status` tinyint(4) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `kod_lokal` (`kod_lokal`),
KEY `kod_firma` (`kod_firma`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci ;
CREATE TABLE IF NOT EXISTS `productions` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`fabrika` varchar(15) COLLATE utf8_unicode_ci DEFAULT NULL,
`board_no` int(11) NOT NULL,
`date` int(11) DEFAULT NULL, // Unix Timestamp
`operator_id` int(11) DEFAULT NULL,
`product_id` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `product` (`product_id`),
KEY `date` (`date`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci ;
I am trying to get count of production of given day. But not all products, producting everyday. I need to exlude the products that has 0 count.
$p = new Product();
$p->include_related_count('production');
$p->get();
And I want to add a date interval to production.
Basicly, I want to get all product's production count within a given day.
How can I do that?
Thank you for any advices.

Answer 1

Not sure about codeigniter details, but the following SQL query will generate a production list per day.
To get today's production:
$query = $this->db->query("
SELECT
a.count(*) as produced
, a.product_id
, b.kod_stok as productname
FROM productions a
INNER JOIN products b ON (a.product_id = b.id)
WHERE FROM_UNIXTIME(a.date) = CURDATE()
GROUP BY TO_DAYS(FROM_UNIXTIME(a.date)), a.product_id
");
To get last 7 days production
$query = $this->db->query("
SELECT
a.count(*) as produced
, a.product_id
, b.kod_stok as productname
FROM productions a
INNER JOIN products b ON (a.product_id = b.id)
WHERE FROM_UNIXTIME(a.date)
BETWEEN DATE_SUB(CURDATE(),INTERVAL 7 DAY) AND CURDATE()
GROUP BY TO_DAYS(FROM_UNIXTIME(a.date)), a.product_id
");