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Class yii\db\mssql\PDO

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Inheritance	yii\db\mssql\PDO » PDO
Available since version	2.0
Source Code	https://github.com/yiisoft/yii2/blob/master/framework/db/mssql/PDO.php

This is an extension of the default PDO class of MSSQL and DBLIB drivers.

It provides workarounds for improperly implemented functionalities of the MSSQL and DBLIB drivers.

Public Methods

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Method	Description	Defined By
beginTransaction()	Starts a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not natively support transactions.	yii\db\mssql\PDO
commit()	Commits a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not natively support transactions.	yii\db\mssql\PDO
getAttribute()	Retrieve a database connection attribute.	yii\db\mssql\PDO
lastInsertId()	Returns value of the last inserted ID.	yii\db\mssql\PDO
rollBack()	Rollbacks a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not natively support transactions.	yii\db\mssql\PDO

Method Details

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beginTransaction() public method

Starts a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not natively support transactions.

public boolean beginTransaction ( )
return	boolean	The result of a transaction start.

Source code

                #[\ReturnTypeWillChange]
public function beginTransaction()
{
    $this->exec('BEGIN TRANSACTION');
    return true;
}

commit() public method

Commits a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not natively support transactions.

public boolean commit ( )
return	boolean	The result of a transaction commit.

Source code

                #[\ReturnTypeWillChange]
public function commit()
{
    $this->exec('COMMIT TRANSACTION');
    return true;
}

getAttribute() public method

Retrieve a database connection attribute.

It is necessary to override PDO's method as some MSSQL PDO driver (e.g. dblib) does not support getting attributes.

public mixed getAttribute ( $attribute )
$attribute	integer	One of the PDO::ATTR_* constants.
return	mixed	A successful call returns the value of the requested PDO attribute. An unsuccessful call returns null.

Source code

                #[\ReturnTypeWillChange]
public function getAttribute($attribute)
{
    try {
        return parent::getAttribute($attribute);
    } catch (\PDOException $e) {
        switch ($attribute) {
            case self::ATTR_SERVER_VERSION:
                return $this->query("SELECT CAST(SERVERPROPERTY('productversion') AS VARCHAR)")->fetchColumn();
            default:
                throw $e;
        }
    }
}

lastInsertId() public method

Returns value of the last inserted ID.

public integer lastInsertId ( $sequence = null )
$sequence	string\|null	The sequence name. Defaults to null.
return	integer	Last inserted ID value.

Source code

                #[\ReturnTypeWillChange]
public function lastInsertId($sequence = null)
{
    return $this->query('SELECT CAST(COALESCE(SCOPE_IDENTITY(), @@IDENTITY) AS bigint)')->fetchColumn();
}

rollBack() public method

Rollbacks a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not natively support transactions.

public boolean rollBack ( )
return	boolean	The result of a transaction roll back.

Source code

                #[\ReturnTypeWillChange]
public function rollBack()
{
    $this->exec('ROLLBACK TRANSACTION');
    return true;
}