With relationship and joins I'm trying get the latest post of each customer.
But I don't really get it to work. I get error:
Column already exists: 1060 Duplicate column name 'custID'
Based on my searching both here and Google it could have been for * but I have removed so all table columns is specified by name so I don't get why I get column already exists?
$db = $this->getDbTable();
// create sub query
$subSql = $db->select()
->setIntegrityCheck(false)
->from(array('s1' => 'sales'), array('s1.custID', 's1.saledate'))
->joinLeft(array('s2' => 'sales'), 's1.custID = s2.custID AND s1.saledate < s2.saledate', array('s2.custID', 's2.saledate'))
->where('s2.custID IS NULL')
->limit(1);
//main query
$sql = $db->select()
->setIntegrityCheck(false)
->from(array('customers' => 'customers'), array("customers.custID"))
->joinLeft(array('sale_tmp' => new Zend_Db_Expr('(' . $subSql . ')')), "customers.custID = sale_tmp.custID", array('sale_tmp.custID'));
//echo $sql->assemble();
//exit;
$resultSet = $db->fetchAll($sql);
return $resultSet;
Since two of your tables have the field custID, there is a conflict about how to populate the custID value in your joined table.
You need to provide a column-alias for one of them. The signature of the joinLeft() method is:
joinLeft($table, $condition, [$columns])
The third argument $columns can be a straight integer-indexed array of columns (as you are using) or it can be an associative array whose values are the columns, but whose keys are the column-aliases.
So perhaps try something like:
// create sub query
// add alias for the custID field
$subSql = $db->select()
->setIntegrityCheck(false)
->from(array('s1' => 'sales'), array('s1.custID', 's1.saledate'))
->joinLeft(array('s2' => 'sales'), 's1.custID = s2.custID AND s1.saledate < s2.saledate', array('sales_custID' => 's2.custID', 's2.saledate'))
->where('s2.custID IS NULL')
->limit(1);
// main query
// add alias for custID field
$sql = $db->select()
->setIntegrityCheck(false)
->from(array('customers' => 'customers'), array("customers.custID"))
->joinLeft(array('sale_tmp' => new Zend_Db_Expr('(' . $subSql . ')')), "customers.custID = sale_tmp.custID", array('temp_custID' => sale_tmp.custID'));
Related
I'm trying to fetch an Object from the database with the repository method findOneBy (id).
Basically, the line looks like this:
public function findAssignedTickets(User $user)
{
$userId = $user->getId();
$ticketMapping = new ResultSetMapping;
$ticketMapping->addEntityResult(Ticket::class, 't');
$ticketMapping->addFieldResult('t', 'id', 'id');
// Postgresql Native query, select all tickets where participants array includes the userId
$query = "SELECT *
FROM (
SELECT id, array_agg(e::text::int) arr
FROM ticket, json_array_elements(participants) e
GROUP BY 1
) s
WHERE
$userId = ANY(arr);
";
$results = $this->getEntityManager()->createNativeQuery($query, $ticketMapping)->getResult();
$results = array_map(function($item) {
return $item->getId();
}, $results); // Transform to array in integers
dump($results); // array:2 [0 => 83, 1 => 84] -> It's correct
$tickets = [];
foreach ($results as $ticketId) {
dump($this->findOneById($ticketId));
// $ticket = $this->findOneById($ticketId);
// $tickets[] = [
// 'identifier' => $ticket->getIdentifier(),
// 'title' => $ticket->getTitle(),
// 'author' => $ticket->getAuthor()->getUsername(),
// 'status' => $ticket->getStatus(),
// 'created' => $ticket->getCreatedAt()->format('c'),
// 'updated' => $ticket->getUpdatedAt()->format('c'),
// ]; // Ticket formatting to send in json
}
return $tickets;
}
which will output :
And I'm sure that the received id matches a row in the database, and that the database contains data, and all fields belong directly to the entity, except for author which represents a ManyToOne and I heard about the lazy displaying of Doctrine, but it shouldn't happen on other fields.
Why can't I retrieve data from the Object even with getters, and why are all the values set to null Except for id ?
EDIT : I was wondering if that had a connexion to the ResultSetMapping I used to fetch the tickets IDs in a totally separate request earlier, and when I added a addFieldResult('t', 'title', 'title'); it did the work, but not on the other fields, another mystery.
I'm getting an error with a query, my question is: can i chain joins?
My first join is to the primary table, but my second join is to the table joined to the primary table. This is the query:
$query = $this->getDbTable()->select()
->from(array('ca' => 'contracts_allotment'),
array('id',
'contracts_rooms_id' => new Zend_Db_Expr("CONCAT(room_type_desc, '-', room_characteristics_desc)")
))
->join(array('cr' => 'contracts_rooms'),
'ca.contract_rooms_id = cr.id',
array())
->join(array('rt' => 'room_types'),
'cr.room_id = rt.id',
array('room_type_desc'))
->join(array('rc' => 'room_characteristics'),
'cr.char_id = rc.id',
array('room_characteristics_desc'))
->where('contract_id = ?', $contractId);
var_dump($this->getDbTable()->fetchAll($query));die;
I'm getting:
Select query cannot join with another table"
The error comes from Zend/Db/Table/Select::assemble()
Here you have some inside assemble():
// Check each column to ensure it only references the primary table
if ($column) {
if (!isset($from[$table]) || $from[$table]['tableName'] != $primary) {
var_dump($from[$table]['tableName'], $primary);die;
require_once 'Zend/Db/Table/Select/Exception.php';
throw new Zend_Db_Table_Select_Exception('Select query cannot join with another table');
}
}
The var_dump() prints:
string(10) "room_types" string(19) "contracts_allotment"
Any idea?
Don't forget to lock the tables when doing joins:
$query = $this->getDbTable()->select()
->setIntegrityCheck(false)
->from(array('ca' => 'contracts_allotment'),
array('id',
'contracts_rooms_id' => new Zend_Db_Expr("CONCAT(room_type_desc, '-', room_characteristics_desc)")
))
->join(array('cr' => 'contracts_rooms'),
'ca.contract_rooms_id = cr.id',
array())
->join(array('rt' => 'room_types'),
'cr.room_id = rt.id',
array('room_type_desc'))
->join(array('rc' => 'room_characteristics'),
'cr.char_id = rc.id',
array('room_characteristics_desc'))
->where('contract_id = ?', $contractId);
->setIntegrityCheck(false) should at least get you a new error.
I've got a problem. I'm trying to left join two tables with Zend Framework using $select object. Unfortunatly my tables has common field 'name' and when I'm joining one with the other the results I get is that name field from table overwrites the name field from the other.
My code is something like that:
$select->joinLeft ( array ('users' => 'users' ), $this->_name . '.employee_id = users.user_id', array ('*' ) );
How I can join tables and avoid this issue?
Use table aliases as you would in any normal sql query!
With Zend_Db aliases are written like this:
$select = $db->select()
->from(array('p' => 'products'),
array('product_id', 'product_name'))
->join(array('l' => 'line_items'),
'p.product_id = l.product_id',
array() ); // empty list of columns
The non-zend query would look like this:
SELECT p.product_id, p.product_name
FROM products AS p
JOIN line_items AS l ON p.product_id = l.product_id;
I guess it's bit late but to get all fields from two tables you must alias all the fields
$select = $db->select()
->from(array('u' => 'users'),
array('u.id'=>'u.id','u.employee_id'=>'u.employee_id','u.name'=>'u.name'))
->joinLeft(array('e' => 'employees'),
'e.id = u.employee_id',
array('e.id'=>'e.id','e.name'=>'e.name') );
And your array would look like:
array(
0=>array(
'u.id'=>'1',
'u.employee_id'=>'1',
'u.name'=>'John Doe',
'e.id'=>'1',
'e.name'=>'Worker'
),
1=>array(
...
));
I am trying to replicate this query using zend framework:
SELECT
activitytype.description,
activity.datecompleted
FROM
clientactivity
INNER JOIN activity
ON activity.activityID = clientactivity.activityid
INNER JOIN activitytype
ON activitytype.activitytypeid = activity.activitytypeid
WHERE
clientactivity.clientid = 100
This is what I have so far:
$select = $dbTable->select(Zend_Db_Table::SELECT_WITH_FROM_PART);
$select->setIntegrityCheck(false);
$select->where('clientactivity.clientid = ?', $clientID);
$select->join('activity', 'activity.activityid = clientactivity.activityid');
$select->join('activitytype', 'activitytype.activitytypeid = activity.activitytypeid');
$select->columns(array('activitytype.description', 'activity.datecompleted'));
I seem to be having problems with the columns option, it doens't seem to be limiting the columns and I am ending up with
clientactivity.* etc in the column list in the query.
What am I doing wrong?
Thanks,
Martin
Try instead of the $select->columns();
$select->from('activitytype.description', 'activity.datecompleted');
Reference - http://framework.zend.com/manual/en/zend.db.select.html
UPDATE:
This example makes us of a generic database handler:
$db = Zend_Db::factory('Pdo_Mysql', array(
'host' => '127.0.0.1',
'username' => 'yourusername',
'password' => 'somepassword',
'dbname' => 'yourdbname'
));
$select = $db->select(Zend_Db_Table::SELECT_WITH_FROM_PART);
$select->from('tableName','fieldName')
->join('joinTable', 'joinTable.keyId = tableName.keyId',array())
->where('tableName.userId = ?', $userId);
$resultSet = $db->fetchAll($select);
The key piece is the blank array at the end of the join statements that specifies no records to be returned from the joined table.
I'm trying to do a group by using Zend framework. Here's my code:
$table = new TableClass();
$select = $table->select();
$select->from ("table", array("date", "column1" => "sum(column1)"));
$select->group ( array ("date") );
$results = $table->fetchAll ($select);
$result = $results[0];
$date = $result->date;
$column1 = $result->column1;
TableClass extends 'Zend_Db_Table_Abstract'.
I can see the query by looking at the mysql query log. The query is well formed - column1 is named in the query and the results look correct if I run the query in mysql workbench.
I cannot access the data in 'column1' - I always get this exception:
Uncaught exception 'Zend_Db_Table_Row_Exception' with message 'Specified column "column1" is not in the row'
I can however access the date column without issue.
I tried:
accessing the columns by array index:
$result[0]
but you get an exception (can't access the columns by index).
not using a column alias:
$select->from ("table", array("date", "sum(column1)"));
$column1 = $result["sum(column1)"];
but you get an exception (no such column "sum(column1)").
throwing in a Zend_Db_Expr:
"column1" => new Zend_Db_Expr ( "sum(column1)" )
but this doesn't help.
Some other examples I have seen suggest the use of the column names without aggregate functions, ie. "column1" instead of "sum(column1)" but that doesn't seem to me to be the answer - the query doesn't have any aggregate functions in it so mysql won't know what to do with it.
Any help appreciated.
Firstly, a quick tip for working with Zend_Db_Select (and by extension Zend_Db_Table_Select), you can view the generated SQL by invoking the toString method. It is vital to verify that your code generates the correct query before working with a result set:
$select = $table->select();
$select->from ("table", array("date", "column1" => "sum(column1)"));
$select->group ( array ("date") );
$sql = (string) $select; //Retrieve SQL as a string
Or simply
die($select); //print SQL
I wrote the following test script using your example and have no problems:
class Table extends Zend_Db_Table_Abstract
{
protected $_primary = 'id';
protected $_name = 'table';
}
$db = Zend_Db::factory('Pdo_Mysql', array(
'dbname' => 'test',
'username' => 'root',
'password' => '',
'host' => 'localhost'
));
$table = new Table($db);
$select = $table->select();
$select->from ($table, array("date", "column1" => new Zend_Db_Expr("sum(column1)")));
$select->group ( array ("date") );
$sql = (string) $select;
echo $sql;
$results = $table->fetchAll ($select);
$result = $results[0];
$date = $result->date;
$column1 = $result->column1;
echo '<br>' . $date . ': ' . $column1;
Use Zend_Debug::dump($result); to inspect data inside the Zend_Db_Table_Row if necessary.
In my case the SQL generated is as follows:
SELECT `table`.`date`, sum(column1) AS `column1` FROM `table` GROUP BY `date`