mysql：检查数据库表中是否存在数组值

Question

我有一个PHP数组（0,1,2,3,4,5），我想在我的数据库表中查看哪些是不。

我该怎么做：

SELECT num FROM (0,1,2,3,4,5) AS num WHERE num NOT IN (SELECT id FROM sometable);

我正在询问正确的SQL synthax。

Answer 1

create table sometable (num int not null);
insert into sometable values (1),(1),(4);

解决方案：

create temporary table tmp (num int not null);
insert into tmp values (0),(1),(2),(3),(4),(5);
select t.num from tmp t left join sometable s on t.num=s.num where s.num is null;

或者

select t.num from tmp t where t.num not in (select num from sometable);

输出：

+-----+
| num |
+-----+
|   2 |
|   3 |
|   5 |
+-----+