framework/db/Command.php
protected function internalExecute($rawSql)
    {
        $attempt = 0;
        while (true) {
            try {
                if (
                    ++$attempt === 1
                    && $this->_isolationLevel !== false
                    && $this->db->getTransaction() === null
                ) {
                    $this->db->transaction(function () use ($rawSql) {
                        $this->internalExecute($rawSql);
                    }, $this->_isolationLevel);
                } else {
                    $this->pdoStatement->execute();
                }
                break;
            } catch (\Exception $e) {
                $rawSql = $rawSql ?: $this->getRawSql();
                $e = $this->db->getSchema()->convertException($e, $rawSql);
                if ($this->_retryHandler === null || !call_user_func($this->_retryHandler, $e, $attempt)) {
                    throw $e;
                }
            }
        }
    }
protected function internalExecute($rawSql)
    {
        $attempt = 0;
        while (true) {
            try {
                if (
                    ++$attempt === 1
                    && $this->_isolationLevel !== false
                    && $this->db->getTransaction() === null
                ) {
                    $this->db->transaction(function () use ($rawSql) {
                        $this->internalExecute($rawSql);
                    }, $this->_isolationLevel);
                } else {
                    $this->pdoStatement->execute();
                }
                break;
            } catch (\Exception $e) {
                $rawSql = $rawSql ?: $this->getRawSql();
                $e = $this->db->getSchema()->convertException($e, $rawSql);
                if ($this->_retryHandler === null || !call_user_func($this->_retryHandler, $e, $attempt)) {
                    throw $e;
                }
            }
        }
    }
protected function internalExecute ( $ rawSql ) { $ attempt = 0 ; while ( true ) { try { if ( ++ $ attempt === 1 && $ this -> _isolationLevel !== false && $ this -> db -> getTransaction ( ) === null ) { $ this -> db -> transaction ( function ( ) use ( $ rawSql ) { $ this -> internalExecute ( $ rawSql ) ; } , $ this -> _isolationLevel ) ; } else { $ this -> pdoStatement -> execute ( ) ; } break ; } catch ( \ Exception $ e ) { $ rawSql = $ rawSql ? : $ this -> getRawSql ( ) ; $ e = $ this -> db -> getSchema ( ) -> convertException ( $ e , $ rawSql ) ; if ( $ this -> _retryHandler === null || ! call_user_func ( $ this -> _retryHandler , $ e , $ attempt ) ) { throw $ e ; } } } }
Executes a prepared statement.

It's a wrapper around [[\PDOStatement::execute()]] to support transactions
and retry handlers.

@param string|null $rawSql the rawSql if it has been created.
@throws Exception if execution failed.
@since 2.0.14
Executes a prepared statement .