mysql语法未选择多行

mysql语法未选择多行,mysql,Mysql,我试图返回country\u language\u id列。当我指定单个country\u id时,它会工作,但当我尝试在多个country\u id上选择时,结果仍然是1 SELECT country_language_id FROM country_master where row_active=1 and country_id=2; 结果=1 SELECT country_language_id FROM country_master where row_active=1 and cou

我试图返回
country\u language\u id
列。当我指定单个
country\u id
时,它会工作,但当我尝试在多个
country\u id
上选择时,结果仍然是1

SELECT country_language_id FROM country_master where row_active=1 and country_id=2;
结果=1

SELECT country_language_id FROM country_master where row_active=1 and country_id=3;
结果=4

SELECT country_language_id FROM country_master where row_active=1 and country_id=2 and 3;
结果=1

…和(国家/地区id=2或国家/地区id=3)
。。。。。。(2,3)中的国家id应给出相同的结果
SELECT country_language_id FROM country_master where row_active=1 and country_id=3;