如何对我的代码进行一次查询
$sql = "SELECT id FROM countries WHERE country_code = LEFT($number,3)";
$sql = "SELECT id FROM countries WHERE country_code = LEFT($number,2)";
$sql = "SELECT id FROM countries WHERE country_code = LEFT($number,1)";
$sql = "SELECT id FROM countries WHERE country_code = 0";
最佳答案
$sql = "SELECT id
FROM countries
WHERE country_code = LEFT($number,3)
OR country_code = LEFT($number,2)
OR country_code = LEFT($number,1)
OR country_code = 0";
关于php - 如何对我的代码进行一次查询，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43316027/