Represents a prepared statement. Child implementations should either extend PDOStatement:

public StatementInterface::fetchField($index = 0)

public StatementInterface::fetchObject()

StatementInterface::fetchAll($mode = NULL, $column_index =

public StatementInterface::fetchAllAssoc($key, $fetch = NULL)

public StatementInterface::fetchAssoc()

public StatementInterface::fetchCol($index = 0)

public StatementInterface::fetchAllKeyed($key_index = 0, $value_index

public StatementInterface::execute($args = array(), $options

public StatementInterface::getQueryString()