How to run raw SQL Query with Zend Framework 2

问题:

Is there a way to execute a SQL String as a query in Zend Framework 2?

I have a string like that:

$sql = "SELECT * FROM testTable WHERE myColumn = 5" 

now I want to execute this string directly.

回答1:

use Zend\Db\Sql\Sql; use Zend\Db\Adapter\Adapter;  $dbAdapterConfig = array(     'driver'   => 'Mysqli',     'database' => 'dbname',     'username' => 'dbusername',     'password' => 'dbuserpassword' ); $dbAdapter = new Adapter($dbAdapterConfig);  $sql = new Sql($dbAdapter); $select = $sql->select(); $select->from('testTable'); $select->where(array('myColumn' => 5));  $statement = $sql->prepareStatementForSqlObject($select); $result = $statement->execute(); 

S. docu: Zend\Db → Zend\Db\Sql

回答2:

Just pass the sql string to your db adapter like this:

$resultSet = $adapter->query($sql, \Zend\Db\Adapter\Adapter::QUERY_MODE_EXECUTE); 

And if you want to pass parameters:

$sql = "SELECT * FROM testTable WHERE myColumn = ?"; $resultSet = $adapter->query($sql, array(5)); 

EDIT: Please note that the query method does not always returns a resultset. When its a resultset producing query(SELECT) it returns a \Zend\Db\ResultSet\ResultSet otherwise(INSERT, UPDATE, DELETE, ...) it will return a \Zend\Db\Adapter\Driver\ResultInterface.

And when you leave the second Parameter empty you will get a \Zend\Db\Adapter\Driver\StatementInterface which you can execute.

回答3:

If you are using tableGateway, you can run your raw SQL query using this statement,

$this->tableGateway->getAdapter()->driver->getConnection()->execute($sql); 

where $sql pertains to your raw query. This can be useful for queries that do not have native ZF2 counterpart like TRUNCATE / INSERT SELECT statements.

回答4:

If you have EntityManager $em on your hands, you can do something like this:

   $select = $em->getConnection()->executeQuery("         SELECT a.id, a.title, a.announcement, asvc.service_id, COUNT(*) AS cnt,             GROUP_CONCAT(asvc.service_id SEPARATOR \", \") AS svc_ids         FROM article AS a         JOIN articles_services AS asvc ON asvc.article_id = a.id         WHERE         asvc.service_id IN (             SELECT tsvc.service_id             FROM tender AS t             JOIN tenders_services AS tsvc ON tsvc.tender_id = t.id             WHERE t.id = :tenderId         )         GROUP BY a.id         ORDER BY cnt DESC, a.id DESC         LIMIT :articlesCount     ", [         'articlesCount' => 5,         'tenderId' => $tenderId,     ], [         'articlesCount' => \PDO::PARAM_INT,     ]);      $result = $select->fetchAll(); // <-- here are array of wanted rows 

I think this way to execute complex queries is best for Zend. But may be I'm not very smart in Zend still. Will glad to see if it helps to someone.

文章来源: How to run raw SQL Query with Zend Framework 2