I want to get the results of all the rows with a pending status and after that display the rest that dont have pending . I cant get the syntax right to order the data this way . I want all the pending value rows and then all the other non-pending rows.
$this->Paginator->settings = array(
// 'conditions' => array('request_status' => 'pending') ,
'order' => array('request_status' => 'pending','request_date'=> 'desc'),
'limit' => 5 );
'request_status' => 'pending' should be either 'request_status' => 'asc' or 'request_status' => 'desc' depending on preference. It doesn't belong in the order conditions as you have specified as its part of a WHERE clause and not an ORDER BY
EDIT:
IF its a standard display that you're looking to render, then use the model rather than pagination settings. I had difficulty with them before. So in the model you would define an order variable
public $order = array("request_status" => "ASC");
or
public $order = array("request_status" => "DESC");
In the controller for a view, it would be a case of calling the standard
$this->set('mydata' , $this->Paginator->paginate);
You can sort on multiple columns, and you can sort different columns in different directions. For example, to sort by type of request_date in descending order, then by request_status within request_type in descending order ('youngest' request_date first), use the following query:
mysql> SELECT * FROM pet
-> ORDER BY request_status, request_date DESC;
CakePHP:
'order' => array('request_status, request_date DESC');
The DESC keyword applies only to the column name immediately preceding it (request_date); it does not affect the request_status column sort order yet will group them. In other words, above sql query will group request_status fields ordered by their request_date fields.
Another useful link for paginator sorting it's this one.
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 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'));
I have a table where I'd like to get all id's that equal 26 first, then have the rest sorted in descending order, so something like:
row id
--- --
1 26
2 26
3 26
4 27
5 25
6 24
Would normally result in:
select id
from table
order by id=26 desc, id desc
How should I construct a find() in Cake? This is what I figure:
$this->Model->find('all', array(
'conditions' => array('Model.id' => 26),
'order' => array('Model.id' => 'DESC')
));
But how should I tell Cake to retrieve the rest of the id's and sort them in descending order after retrieving all id's that equal 26?
Try this.
$this->Model->find('all', array(
'order' => array('Model.id = 26 DESC' , 'Model.id DESC')
));
Assuming that your id field is your primaryKey as defined by the CakePHP conventions, the query you have will only ever return one result. Thus the ordering is not relevant here.
I would also suggest using find('first') to prevent you getting a single result indexed numerically.
$this->Model->find('first', array('conditions' => array('id' => $id)));
If you wanted to return this single record, and then all the other records, I would inverse this with a find('all').
$this->Model->find('all', array('conditions' => array('id !=' => $id)));
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)
));
I'm trying to use Group by in find method for my relational database I want to get the latest record with unique receiver_id out of result set filtered by user_id and below is my code:
$this->loadModel('Chat');
$lastChat = $this->Chat->find('all', array(
'conditions' => array(
'Chat.user_id' => $user_id['User']['id']
),
'fields' => array(
'Chat.id',
'Chat.chat',
'Chat.user_id',
'Chat.receiver_id',
'Chat.read',
'Chat.created'
),
'group' => array('Chat.receiver_id'),
'order' => array('Chat.created DESC')
));
However, this does not seem to work. I'm not sure why but I'm only getting one result...
How can I get multiple results with rules based on above.
Try the following:
$db = $this->Chat->getDataSource();
$chats = $db->query("SELECT * , (Chat.user_id + Chat.receiver_id) AS dist
FROM (
SELECT *
FROM chats t
WHERE ( t.user_id =$id OR t.receiver_id =$id )
ORDER BY t.id DESC
) Chat
GROUP BY dist
ORDER BY Chat.id DESC");