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Class yii\db\mssql\PDO

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 ( integer $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 string\|false lastInsertId ( string\|null $sequence = null )
$sequence	string\|null	The sequence name. Defaults to null.
return	string\|false	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; }