小编Aks*_*hay的帖子

这些查询及其执行方式之间是否存在差异？

SELECT   customername, country, creditLimit
FROM   customers
WHERE (country = 'USA' OR country = 'France') AND creditlimit > 100000;

SELECT    customername, country, creditLimit
FROM    customers
WHERE country = 'USA' OR country = 'France' AND creditlimit > 10000;