Where is the syntax error in this MySQL stored procedure?

问题

I want to set the output parameter name to the concatenated kund.Vorname and kund.Nachname. But I get a syntax error and I can't find it. I'd appreciate any help.

CREATE PROCEDURE GetName(IN kartennummer CHAR(16), OUT name VARCHAR(91))
BEGIN
SELECT @name = (CONCAT_WS(' ', kund.Vorname, kund.Nachname) FROM Kunden kund, Konten kont WHERE kund.KundenID = kont.KundenID AND kont.Kartennummer = kartennummer));
END;

回答1:

You are closing too many brackets on line 3

回答2:

First you're using name without a leading @ and in the Select Statement @name. That's not the same.

来源：https://stackoverflow.com/questions/61680826/where-is-the-syntax-error-in-this-mysql-stored-procedure