将此存储过程从 T-SQL 转换为 MySQL 语法？ [关闭]

Question

我在执行中看到这个错误我在 SQL Server 中编写并希望将其转换为 mysql

1 您的 SQL 语法有错误；检查手册 对应于您的 MySQL 服务器版本，以便使用正确的语法 靠近'db_cursor FETCH NEXT FROM db_cursor INTO CityName,CountryName WHILE @@FETC' 在第 11 行 C:\Users\Dt4IT\Desktop\SQL.sql 2 1

delimiter #
Create Procedure ss()

begin
DECLARE CityName VARCHAR(100); -- filename for backup  
DECLARE CountryName VARCHAR(100);

DECLARE db_cursor CURSOR FOR  
SELECT CityName,(Select Country from d_country where CountryID = d_country.CountryID) 
FROM d_cities;

OPEN db_cursor   
FETCH NEXT FROM db_cursor INTO CityName,CountryName 
WHILE @@FETCH_STATUS = 0   
BEGIN 
    Insert into ip_relations
    Select city_name,country_name,ip_from,ip_to from ip2location_db11 where 
    city_name = CityName and country_name = CountryName
FETCH NEXT FROM db_cursor INTO CityName,CountryName 
END   

CLOSE db_cursor   
DEALLOCATE db_cursor
end#
  delimiter ;

Answer 1

您应该使用@ 作为这些局部变量的前缀：

DECLARE @CityName VARCHAR(100), @CountryName VARCHAR(100);

...

FETCH NEXT FROM db_cursor INTO @CityName,@CountryName

...