Is use statement superfluous in MySqlConnector?

[Dachande663]

When MySQL connects to MySQL via a PDO DSN, the dbname value is provided. However, on L27, Laravel executes a USE statement to select the datatbase again. This means all connections result in an extra statement been sent, which has a non-zero latency for any network-based architecture.

Is there a need for the USE statement? Removing it does not affect any tests as far as I can see.

framework/src/Illuminate/Database/Connectors/MySqlConnector.php

Line 27 in 03795ab

$connection->exec("use `{$config['database']}`;");

[coppolafab]

I think no. I've been using a modified MySqlConnector for years without issues.
See here #43020

You can bind a new class to "db.connector.mysql" and override some methods, "connect" in particular.