MYSQL选择字段的值是参数值的倍数

第一条消息

我遇到了一个我不知道如何解决的问题：

我选了这个

select
p.id as pId, -- 0
p.code,
p.name 

from work_order as wo

left join project as p on wo.project_fk = p.id

where date(wo.date1) >= :initialDate
and date(wo.date1) <= :initialDate

group by p.id

order by p.code asc

我得到了一个参数：state有3个可能的值“1”、“2”或“3”，表的字段state_fk有多个值。我希望该参数的值选择哪些值具有state_fk。下一个代码是错误的，但它可以让您了解我需要什么：

select
p.id as pId, -- 0
p.code,
p.name 

from work_order as wo

left join project as p on wo.project_fk = p.id

where date(wo.date1) >= :initialDate
and date(wo.date1) <= :initialDate
and ( (case :state = '1' then ('abc', 'qwe') end) in state_fk 
    or (case :state = '2' then ('cdw', 'zxc', 'ere') end) in state_fk
    or (case :state = '3' then ('swq', 'bge', 'qah') end) in state_fk )

group by p.id

order by p.code asc

---

如果有人告诉我如何正确操作，我将不胜感激。

没有表定义，我们很难进行测试。但像这样的方法应该有效：

select
p.id as pId, -- 0
p.code,
p.name 

from work_order as wo

left join project as p on wo.project_fk = p.id

where date(wo.date1) >= :initialDate
and date(wo.date1) <= :initialDate
and ( 
        (:state = '1' and state_fk in ('abc', 'qwe'))
        OR
        (:state = '2' and state_fk in ('cdw', 'zxc', 'ere'))
        OR
        (:state = '3' and state_fk in ('swq', 'bge', 'qah'))
    )

group by p.id

order by p.code asc

---

哦，我的上帝，这是如此可笑的简单；非常感谢！