11th June 2020
Magento 2 Direct SQL Queries in Zend Format
Eecrets Magento
Sometimes due to some project requirements, we need to directly communicate with Magento2 Database and we have to write SQL queries for that. This post will help you to write direct SQL Queries in Zend Format.
public function __construct(
\Magento\Framework\App\ResourceConnection $resourceConnection
) {
$this->resourceConnection = $resourceConnection;
}
$connection = $this->resourceConnection->getConnection();
$tableName = $this->resourceConnection->getTableName('customer_history');
$tableName2 = $this->resourceConnection->getTableName('order_history');
OR
Using Object Manager Directly:
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$resource = $objectManager->get('Magento\Framework\App\ResourceConnection');
$connection = $resource->getConnection();
$tableName =$resource->getTableName('customer_history');
$tableName2 =$resource->getTableName('order_history');
Select Queries:
Syntax:
$select = $connection->select()
->from(
['p' => $tableName])
->where('p.column_name=?', $value)
->where('p.column_name2 >=?', $value)
->order('p.column_name3 DESC')
->limit($pagesize, $offset);
$data = $connection->fetchAll($select);
Example:
$select = $connection->select()
->from(
['p' => $tableName])
->where('p.customer_id=?', 5)
->where('p.status =?', 1)
->order('p.createdat DESC')
->limit(10, 0);
To get only selected columns from Table:
$select = $connection->select()
->from( ['p' => $tableName],['p.order_id', 'p.status'])
->where('p.customer_id=?', 5)
->where('p.status =?', 1)
->order('p.createdat DESC')
->limit(10, 0);
$data = $connection->fetchAll($select);
Perform Select Query with JOIN
$select = $connection->select()
->from(
['p' => $tableName], ['p.customer_id', 'p.status', 'p.order_id','o.ordertotal']
)
->join(
['o' => $tableName2], 'main_table.order_id = order.id', ['']
)
->where('p.order_id = (?)', '455');
$data = $connection->fetchAll($query);
Insert Query:
Syntax:
$data = ["column_name"=>$value,"column_name2"=>$value2,'column_name3'=>$value3]; $connection->insert($tableName, $data);
Example :
$data = ["customer_id"=>'22',"status"=>1,'order_id'=>'455']; $lastInsertedID= $connection->insert($tableName, $data);
Update Query:
Syntax:
$data = ["column_name3"=>$value3]; $where = ['column_name = ?' => $value, 'column_name2 = ?' => $value2]; $updatedRows=$connection->update($tableName, $data, $where);
Example:
$data = ["status"=>1]; $where = ['customer_id = ?' => '22', 'order_id = ?' => '455']; $updatedRows=$connection->update($tableName, $data, $where);
Delete Queries
Syntax:
$connection->delete( $tableName, ['column_name = ?' => $value, 'column_name2 = ?' => '0'] );
Example :
$connection->delete( $tableName, ['customer_id = ?' => '22', 'status = ?' => '0'] );
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