Solving the weird problem that the query conditions affect the value of query fields in MySQL query

The phenomenon and background of the problem

A query result consisting of multiple tables , Judge the current data status according to several fields ：

When no conditions are added, one of them is “ Collected ”, See that the Department name is “ Business branch leaders ”：

When adding filter criteria , To search, the status is “ Collected ” When data , The data found is indeed the original “ Business branch leaders ”, But the state has become “ Not yet begun ”, Why is that ,why？ name group_id It still exists ！

Problem related code , Do not paste screenshots

Original code ：

select * from (        select         case when group_checked_je>=je then ' Completed '        when checked_cnt>0 then ' Completed '        when a11.group_id is null  then ' Not yet begun '        when a11.je_gets<je then ' Incomplete collection '        when a11.je_gets>=je then ' Collected '        end group_status,        case when  a11.group_id is not null then a11.group_id else concat(a11.cycle,a11.dept_id) end id,        a11.cycle,a11.dept_id,a11.parent_id,a11.dept_name,a11.dept_long_name,a11.group_id,        a11.manager,a11.do_time_begin,a11.do_time_end,a11.do_times,        a11.cnt_dept,        a11.cnt,        a11.je,        a11.cnt_gets,        a11.je_gets,        a11.left_full,        a11.left_poor,        a11.remain,        a11.group_checked_je,        eff_get_fp_cnt,all_get_fp_cnt,        a11.can_gets_cnt,        checked_cnt        from        (        select a10.cycle,a10.dept_id,a10.parent_id,a10.dept_name,a10.dept_long_name,a10.group_id,        a10.manager,a10.do_time_begin,a10.do_time_end,a10.do_times,        count(0) cnt_dept,        sum(case when a10.bxed0>0 then 1 else 0 end) cnt,        sum(a10.bxed0) je,        sum(case when a10.bxed0>0 and  a10.je_need=0 then 1 else 0 end) cnt_gets,        sum(user_je_eff)  je_gets,        sum(case when a10.bxed0>0 and a10.je_need >0 and a10.user_left_fp_je>= a10.je_need then 1 else 0 end) left_full,        sum(case when a10.bxed0>0 and a10.je_need >0 and a10.user_left_fp_je< a10.je_need then 1 else 0 end) left_poor,        sum(case when a10.je_need>0 then 1 else 0 end) remain,        sum(a10.user_checked_je) group_checked_je,        sum(a10.eff_get_fp_cnt) eff_get_fp_cnt,sum(a10.all_get_fp_cnt) all_get_fp_cnt,        sum(a10.checked_cnt) checked_cnt,        sum(a10.can_gets_cnt) can_gets_cnt        from        (        select a9.cycle,a9.dept_id,a9.parent_id,a9.dept_name,a9.dept_long_name,a9.user_id,a9.login_name,        a9.user_name, a9.bxed,a9.bxed0,a9.group_id,a9.manager,a9.do_time_begin,a9.do_time_end,a9.do_times,        a9.user_je_eff,        a9.user_je_exp,        a9.user_checked_je,        a9.eff_get_fp_cnt,        a9.all_get_fp_cnt,        a9.checked_cnt,        ifnull( sum(b9.jshjxx) ,0) user_left_fp_je,        case when sum(b9.jshjxx) =null then 0 else count(b9.id) end user_left_fp_cnt,        case when a9.bxed0<=0 then 0        when a9.bxed0>0 and a9.user_je_eff>= a9.bxed0 then 0        else a9.bxed0-a9.user_je_eff end je_need,        case when (case when a9.bxed0 <=0 then 0        when a9.bxed0>0 and a9.user_je_eff>= a9.bxed0 then 0        else a9.bxed0-a9.user_je_eff end)>0        and (ifnull( sum(b9.jshjxx) ,0))>0    then 1 else 0 end can_gets_cnt        from        (        select a8.cycle,a8.dept_id,a8.parent_id,a8.dept_name,a8.dept_long_name,a8.user_id,a8.login_name,        a8.user_name, a8.bxed,a8.group_id,a8.manager,a8.do_time_begin,a8.do_time_end,a8.do_times,a8.bxed0,        sum(case when a8.check_status <> '-1' then a8.jshjxx else 0 end) user_je_eff,        sum(case when a8.check_status = '-1' then a8.jshjxx else 0 end) user_je_exp,        sum(case when a8.check_status='1' then  a8.jshjxx else 0 end) user_checked_je,        sum(case when a8.check_status <> '-1' then 1 else 0 end) eff_get_fp_cnt,        sum(case when a8.check_status is not null then 1 else 0 end) all_get_fp_cnt,        sum(case when a8.check_status is not null and check_status='1' then 1 else 0 end) checked_cnt        from        (        select a7.cycle,a7.dept_id,a7.parent_id,a7.dept_name,a7.dept_long_name,a7.user_id,a7.login_name,        a7.user_name, a7.bxed,a7.group_id,a7.manager,a7.do_time_begin,a7.do_time_end,a7.do_times        ,a7.inv_id,a7.check_status,b7.jshjxx,a7.bxed0 from        (        select a6.cycle,a6.dept_id,a6.parent_id,a6.dept_name,a6.dept_long_name,a6.user_id,a6.login_name,        a6.user_name, a6.bxed,a6.group_id,a6.manager,a6.do_time_begin,a6.do_time_end,a6.do_times        ,b6.inv_id,b6.status check_status,a6.bxed0 from        (        select a5.cycle,a5.dept_id,a5.parent_id,a5.dept_name,a5.dept_long_name,a5.user_id,a5.login_name,        a5.user_name, a5.bxed,        case when b5.bxed0 is null then a5.bxed when b5.bxed0=0 then 0 else a5.bxed end bxed0,        a5.group_id,a5.manager,a5.do_time_begin,a5.do_time_end,a5.do_times        ,b5.id igu_id from        (        select a4.cycle,a4.dept_id,a4.parent_id,a4.dept_name,a4.dept_long_name,a4.user_id,a4.login_name,        a4.user_name, a4.bxed,b4.id group_id,b4.manager,b4.do_time_begin,b4.do_time_end,b4.do_times        from        (        select a3.cycle,a3.dept_id,a3.parent_id,a3.dept_name,a3.dept_long_name,a3.user_id,a3.login_name,a3.user_name,sum(a3.bxed) bxed from        (        select a2.cycle,a2.dept_id,a2.parent_id,a2.dept_name,a2.dept_long_name,a2.user_id,a2.login_name,a2.user_name,b2.bxed from        (        select a1.cycle,a1.dept_id,a1.parent_id,a1.dept_name,a1.dept_long_name,a1.user_id,a1.login_name,a1.user_name,b1.post_id from        (        select '2022-01' cycle,a.dept_id,a.parent_id,a.dept_name,a.leader dept_long_name,b.user_id,b.login_name,b.user_name        from sys_dept  a        left join sys_user as b        on a.dept_id=b.dept_id        where  a.status='0'        and b.status='0'        and a.del_flag='0'        and b.del_flag = '0'        and a.parent_id=101        ) a1 left join sys_user_post b1        on a1.user_id=b1.user_id        )a2  left join sys_post b2        on a2.post_id=b2.post_id        where b2.status='0'        ) a3        group by a3.cycle,a3.dept_id,a3.dept_name,a3.dept_long_name,a3.user_id,a3.login_name,a3.user_name        )a4 left join invoice_gets_group b4        on a4.cycle=b4.cycle        and a4.dept_id=b4.dept_id        ) a5 left join invoice_gets_user b5        on a5.group_id =b5.group_id        and a5.login_name =b5.login_name        )a6 left join invoice_gets_user_list b6        on a6.igu_id= b6.igu_id        )a7 left join invoice b7        on a7.inv_id=b7.id        )a8        group by a8.cycle,a8.dept_id,a8.parent_id,a8.dept_name,a8.dept_long_name,a8.user_id,a8.login_name,        a8.user_name, a8.bxed,a8.group_id,a8.manager,a8.do_time_begin,a8.do_time_end,a8.do_times,a8.bxed0        )a9 left join invoice b9        on a9.login_name=b9.user_name        and b9.status = '1'        and b9.kprq like concat(substr('2022-01',1,4),'%')        group by a9.cycle,a9.dept_id,a9.parent_id,a9.dept_name,a9.dept_long_name,a9.user_id,a9.login_name,        a9.user_name, a9.bxed,a9.bxed0,a9.group_id,a9.manager,a9.do_time_begin,a9.do_time_end,a9.do_times,        a9.user_je_eff,        a9.user_je_exp        )a10        group by a10.cycle,a10.dept_id,a10.parent_id,a10.dept_name,a10.dept_long_name,a10.group_id,        a10.manager,a10.do_time_begin,a10.do_time_end,a10.do_times        )a11) a12         where a12.group_status=' Collected '

Operation results and error reporting contents

My solution ideas and tried methods

What I want to achieve

I just want to know why the field value in the result changes after finding it ？

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Take the answer ：

I don't know why , But it can go to , Thank you for your old classmates HZG：

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