在MySQL中，调用参数类型为VARCHAR的存储例程country_hos的正确语法是( )
CALL country_hos('Europe');
USE country_hos('Europe');
SELECT country_hos('Europe');
None of the mentioned
青云测评
青云测评
在MySQL中，调用参数类型为VARCHAR的存储例程country_hos的正确语法是( )
CALL country_hos('Europe');
USE country_hos('Europe');
SELECT country_hos('Europe');
None of the mentioned
