有人可以解释一下这段代码是什么意思吗?
DELIMITER $$
--
-- Procedures
--
CREATE DEFINER=`username`@`localhost` PROCEDURE `test_multi_sets`()
DETERMINISTIC
begin
select user() as first_col;
select user() as first_col, now() as second_col;
select user() as first_col, now() as second_col, now() as third_col;
end$$
DELIMITER ;
因为我的数据库只用这个导出,而且导入到另一台服务器似乎给我带来了麻烦。