I'm new to cakephp2 and I wanted to ask you a little favor.I'm currently learning cakephp2 but I'm having some hard time trying to understand how to use where and groupby clause in cakephp2.
I am tring to convert this sql query below to cakphp2 but how will I do it using find() ?
select params,count(params) from pv_logs
where dt = '2014/9/25' and is_crawler = 0
group by params order by count(params) desc limit 100 ;
This is how I did it in cakephp2 format but do you see something wrong with this ?
$pvcount = $this->PvLog->find('all', array(
'fields' => array('dt','params','count(params)'),
'conditions'=>array('PvLog.dt'=>'2014/9/25','PvLog.is_crawler'=>0),
'group'=>array('PvLog.params'),
'order'=>array('PvLog.count(params)'),
'limit' => 100,
));
Try Below
$this->PvLog->virtualFields['params_count']='count(params)';
$pvcount = $this->PvLog->find('all', array(
'fields' => array('dt','params','params_count'),
'conditions'=>array('PvLog.dt'=>'2014-09-25','PvLog.is_crawler'=>0),
'group'=>array('PvLog.params'),
'order'=>array('params_count'=>'asc'),
'limit' => 100,
));
Related
I am using subquery for id field.
$db = $this->AccountRequest->getDataSource();
$subQuery = $db->buildStatement(
array(
'fields' => array('MAX(id)'),
'table' => $db->fullTableName($this->AccountRequest),
'alias' => 'MaxRecord',
'limit' => null,
'offset' => null,
'order' => null,
'group' => array("user_id")
),
$this->AccountRequest
);
$searching_parameters = array(
#"AccountRequest.id IN " => "(SELECT MAX( id ) FROM `account_requests` GROUP BY user_id)"
"AccountRequest.id IN " => "(".$subQuery.")"
);
$this->Paginator->settings = array(
#'fields' => array('AccountRequest.*'),
'conditions' => $searching_parameters,
'limit' => $limit,
'page' => $page_number,
#'group' => array("AccountRequest.user_id"),
'order' => array(
'AccountRequest.id' => 'DESC'
)
);
$data = $this->Paginator->paginate('AccountRequest');
This structure is producing a query is:
SELECT
`AccountRequest`.`id`,
`AccountRequest`.`user_id`,
`AccountRequest`.`email`,
`AccountRequest`.`emailchange`,
`AccountRequest`.`email_previously_changed`,
`AccountRequest`.`first_name`,
`AccountRequest`.`first_namechange`,
`AccountRequest`.`f_name_previously_changed`,
`AccountRequest`.`last_name`,
`AccountRequest`.`last_namechange`,
`AccountRequest`.`l_name_previously_changed`,
`AccountRequest`.`reason`,
`AccountRequest`.`status`,
`AccountRequest`.`created`,
`AccountRequest`.`modified`
FROM
`syonserv_meetauto`.`account_requests` AS `AccountRequest`
WHERE
`AccountRequest`.`id` IN '(SELECT MAX(id) FROM `syonserv_meetauto`.`account_requests` AS `MaxRecord` WHERE 1 = 1 GROUP BY user_id)'
ORDER BY
`AccountRequest`.`id` DESC
LIMIT 25
In the subquery, its add an extra single quote so it's producing an error.
So, How can I remove these single quotes from this subquery?
Thanks
What are you trying to achieve with the sub query?
The MAX(id) just means it will pull the id with the largest value AKA the most recent insert. The sub query is completely redundant when you can just ORDER BY id DESC.
using MAX() will return only one record, if this is what you want to achieve you can replicate by adding LIMIT 1
If the sub query is just an example and is meant to be from another table I would just run the query that gets the most recent id before running the main query. Getting the last inserted id in a separate query is very quick and I cant see much of a performance loss. I think it will result in cleaner code that`s easier to follow to.
edit 1: From the comments it sounds like all your trying to get is a particular users latest account_requests.
You dont need the sub query at all. My query below will get the most recent account record for the user id you choose.
$this->Paginator->settings = array(
'fields' => array('AccountRequest.*'),
'conditions' => array(
'AccountRequest.user_id' => $userID // you need to set the $userID
)
'page' => $page_number,
'order' => array(
'AccountRequest.id DESC' //shows most recent first
),
'limit' => 1 // set however many you want the maximum to be
);
The other thing you cold be meaning is to get multiple entries from multiple users and display them in order of user first and then the order of recent to old for that user. MYSQL lets you order by more than one field, in that case try:
$this->Paginator->settings = array(
'conditions' => array(
'AccountRequest.user_id' => $userID // you need to set the $userID
)
'page' => $page_number,
'order' => array(
'AccountRequest.user_id', //order by the users first
'AccountRequest.id DESC' //then order there requests by recent to old
)
);
If the example data you have added into the question is irrelevant and you are only concerned about how to do nested subqueries it has already been answered here
CakePHP nesting two select queries
However I still think based on the data in the question you can avoid using a nested query.
I am working on a ecommerce with platform cakephp and using google charts for reports.My requirement is to get all records as per all 12 months, so I have used following code for a single month
Query
SELECT COUNT(*) AS count FROM orderproductmasters AS Orderproductmaster
LEFT JOIN ordermasters AS Ordermaster ON
(Orderproductmaster.ordermaster_id = Ordermaster.id) LEFT JOIN productmasters AS Productmaster ON
(Orderproductmaster.productmaster_id = Productmaster.id)
WHERE Ordermaster.orderstatusmaster_id = 1 AND Month(Orderproductmaster.created) = 8
Code
$this->Orderproductmaster->find('count',
array('conditions'=>array('Ordermaster.orderstatusmaster_id'=>1,'
Month(Orderproductmaster.created)'=>8)));
Since, I need records as per Jan, feb,march and all 12 months...,so for 12 months I am using following code
for($i=1;$i<13;$i++)
{
$orderproductmasters[$i] = $this->Orderproductmaster->find('count',
array('conditions'=>array('Ordermaster.orderstatusmaster_id'=>1,
'Month(Orderproductmaster.created)'=>$i)));
}
So question might be silly, but is it possible to get all months record without using for loop i.e, within a single query.
Thanks in advance
I think , your need can be fulfilled by using cursors in stored procedure. And then using stored procedure to cake-php.
Example on db side is here
$options = array();
$options['fields'] = array('COUNT(Orderproductmaster.id)');
$options['conditions'] = array('Ordermaster.orderstatusmaster_id = 1',
'Month(Orderproductmaster.created) BETWEEN 1 AND 12');
$options['joins'] = array(
array(
'table' => 'ordermasters',
'alias' => 'Ordermaster',
'type' => 'left',
'conditions' => array(
'Orderproductmaster.ordermaster_id = Ordermaster.id'
)
),
array(
'table' => 'productmasters',
'alias' => 'Productmaster',
'type' => 'left',
'conditions' => array(
'Orderproductmaster.productmaster_id = Productmaster.id'
)
)
);
$options['group'] => array('Month(Orderproductmaster.created)');
$this->Orderproductmaster->find('all',$options);
What About something like:
$this->Orderproductmaster->find('count',
array(
'fields'=>'DISTINCT(Month(Orderproductmaster.created)),
'conditions'=>array('Ordermaster.orderstatusmaster_id'=>1,'
Month(Orderproductmaster.created)'=>8)));
Hi i am using CakePHP version - 2.5.5.
I have a table name chat_ategory_mages I want to get Average number of Frequency Order by Descending. Know about the Frequency please check - How to get Average hits between current date to posted date in MySQL?
chat_ategory_mages
id chat_category_id hits created
------------------------------------------------
1 5 10 2014-11-07 11:07:57
2 5 8 2014-11-10 05:10:20
3 5 70 2014-10-04 08:04:22
Code
$order=array('Frequency' => 'DESC');
$fields=array(
'ChatCategoryImage.id',
'ChatCategoryImage.chat_category_id',
'ChatCategoryImage.created',
'ChatCategoryImage.hits',
'hits/(DATEDIFF(NOW(),created)) AS Frequency',
);
QUERY-1
$rndQry=$this->ChatCategoryImage->find('all',array('conditions'=>array('ChatCategoryImage.chat_category_id'=>$cetegory_id), 'fields'=>$fields, 'order'=>$order, 'limit'=>10));
pr($rndQry); //WORKING FINE
QUERY-2
//THIS IS NOT WORKING
$this->Paginator->settings = array(
'conditions'=>array('ChatCategoryImage.chat_category_id'=>$cetegory_id),
'fields'=>$fields,
'limit' => 10,
'order' => $order,
);
$getCategoryImages = $this->Paginator->paginate('ChatCategoryImage');
pr($getCategoryImages); //NOT WORKING
Above table if i write simple cakephp query the order is working fine but when i am using cakephp pagination it is not working. If i am using $order=array('hits' => 'DESC'); this its woring perfect. Showing result 70,10,8 consistently but when i am adding Frequency it the result not coming the descending order.
Mysql Query
QUERY-1 :
SELECT ChatCategoryImage.id, ChatCategoryImage.chat_category_id, ChatCategoryImage.hits, ChatCategoryImage.created, hits/(DATEDIFF(NOW(),created)) AS Frequency, FROM myshowcam.chat_category_images AS ChatCategoryImage WHERE ChatCategoryImage.chat_category_id = 5 ORDER BY Frequency DESC LIMIT 10
QUERY-2 :
SELECT ChatCategoryImage.id, ChatCategoryImage.chat_category_id, ChatCategoryImage.hits, ChatCategoryImage.created, hits/(DATEDIFF(NOW(),created)) AS Frequency, FROM myshowcam.chat_category_images AS ChatCategoryImage WHERE ChatCategoryImage.chat_category_id = 5 LIMIT 10
What is the problem and why its not coming ORDER BY Frequency in the second query?
Thanks
chinu
You can use virtualFields
$this->ChatCategoryImage->virtualFields = array('Frequency' => 'hits/(DATEDIFF(NOW(),created))');
changing the way of order
$order = array('Frequency' => 'desc');
This happened to me to. You have to add to the paginate function the third parameter $whitelist. For example.
$this->Paginator->settings = array(
'conditions'=>array('ChatCategoryImage.chat_category_id'=>$cetegory_id),
'fields'=>$fields,
'limit' => 10,
'order' => $order,
);
$scope = array();
$whitelist = array('ChatCategoryImage.id', ...); //The fields you want to allow ordering.
$getCategoryImages = $this->Paginator->paginate('ChatCategoryImage', $scope, $whitelist);
pr($getCategoryImages);
I do not know why this is happening. I tried to see the code inside the paginate function but i could not figure it out.
Your code was lil wrong
$this->paginate = array(
'conditions' => array('ChatCategoryImage.chat_category_id'=>$cetegory_id),
'limit' => 10, 'order' => 'Frequency' => 'DESC');
$getAllCourses = $this->paginate('ChatCategoryImage');
I can't display Agreements with agreement_number less than 7 and order it by agreement_number DESC.
I have read Pagination CakePHP Cook Book and can't find where my code is wrong. It display only less than 7, but always ASC. I have found similar question here, [that works],(CakePHP paginate and order by) and do not know why. Agreement.agreement_number is int(4).
$this->Agreement->recursive = 0;
$agreements = $this->Paginator->paginate('Agreement', array(
'Agreement.agreement_number <' => '7'
), array(
'Agreement.agreement_number' => 'desc'
)
);
$this->set('agreements', $agreements);
}
Exact cake version is 2.5.2.
... Where did you read that that was the correct syntax?
The paginate function's third parameter is for sorting (and I mean, within the table... with those down and up arrows).
List of allowed fields for ordering. This allows you to prevent
ordering on non-indexed, or undesirable columns.
You have the exact link used for documentation of the API, but you don't seem to be following it (like, from here and here)
$this->Paginator->settings = array(
'Agreement' => array(
'order' => array('Agreement.agreement_number' => 'desc')
)
);
$agreements = $this->Paginator->paginate('Agreement', array(
'Agreement.agreement_number <' => '7'));
In my CakePHP model I'm trying to get some data from my table.
I tried using DISTINCT but it seems like using DISTINCT doesn't change the query results.
I can see many rows that has the same nick
with 'DISTINCT Mytable.nick'
$this->Mytable->find('all',
array(
'fields'=> array(
'DISTINCT Mytable.nick',
'Mytable.age', 'Mytable.location',
),
'conditions' => array('Mytable.id >=' => 1, 'Mytable.id <=' => 100),
'order' => array('Mytable.id DESC')
));
with 'group Mytable.nick'
$this->Mytable->find('all',
array(
'fields'=> array(
'Mytable.nick',
'Mytable.age', 'Mytable.location',
),
'conditions' => array('Mytable.id >=' => 1, 'Mytable.id <=' => 100),
'group' => 'Mytable.nick',
'order' => array('Mytable.id DESC')
));
with 'Mytable.nick'
$this->Mytable->find('all',
array(
'fields'=> array(
'Mytable.nick',
'Mytable.age', 'Mytable.location',
),
'conditions' => array('Mytable.id >=' => 1, 'Mytable.id <=' => 100),
'order' => array('Mytable.id DESC')
));
Edit: It seems like even CakePHP 2.1 can't use DISTINCT option. When I tried "GROUP BY" it solved my issue. But as you can see from my query I need to order results with Mytable.id descended. When I use GROUP BY, when Mysql finds relevant row, it doesn't take others. For example.
id=1, nick=mike, age=38, location=uk
id=2, nick=albert, age=60, location=usa
id=3, nick=ash, age=42, location=uk
id=4, nick=albert, age=60, location=new_zelland
When I use group Mytable.nick, I don't see 4th row in my results, I see 2nd row. Because when mysql saw "albert" second time, it doesn't put it into my results. But I need latest "albert" result. Is it not possible?
Edit2: It seems like order by/group by conflict is a common problem. I found some tips in this question. But it gives solution for native Mysql queries. I need a solution for CakePHP type queries.
Not clear on why you want to group by nick and order by id. Do you intend to use an aggregate function like COUNT() to see how many occurrences of the same nick there are? In short you overall goal still is not clear to me. Might be worth being aware of the HAVING MySQL keyword.
Updated: Ok, that makes more sense. So you need to use a sub select on the condition or perhaps express that as a join. I'll try and show an example using the sub select in the WHERE clause.
/* select last occurrence for each nick (if you need one for each location )*/
SELECT nick, age, location
FROM myTable t1
WHERE id =
(SELECT MAX(id)
FROM myTable t1
WHERE t1.nick = t2.nick);
Would think something like this would work:
$this->Mytable->find('all',
array(
'fields'=> array(
'Mytable.nick',
'Mytable.age', 'Mytable.location',
),
'conditions' => array('Mytable.id =' => '(SELECT MAX(id) FROM myTable t2 WHERE myTable.nick = t2.nick)', 'Mytable.id <=' => 100)
));