带有IF语句的SQL CONCAT

Question

我有这个:

SELECT CONCAT(forename,' ',IFNULL(initials, ''),' ',surname) AS name FROM users

如何更改它,以便如果initials字段为null,它也不包括后面的空格？

Answer 1

SELECT CONCAT(forename,' ',IFNULL(CONCAT(initials,' '), ''),surname) AS name FROM users