सही परिणाम नहीं लौटाने से जुड़ता है। मैं क्या गलत कर रहा हूं?

गणना, योग, आदि जैसे कार्यों का उपयोग करते समय, आपको परिणामों के समूहन को नियंत्रित करने के लिए समूह दर खंड जोड़ना होगा:

select 
    concat(u.first_name, ' ', u.last_name) as name, 
    u.skill, 
    ut.name as team_name,
    (count(if(a.tech_id = u.user_id AND a.qc_id = 0 AND a.status = 2,1,0))) AS assigned_scopes,
    (count(if(a.tech_id = u.user_id  AND a.qc_id > 0 AND a.status = 3,1,0))) AS assigned_qa,
    (count(if(a.assignment_id=o.assignment_id and a.tech_id = u.user_id  AND a.status = 2 AND a.qc_id = 0 and o.class_id= 3,1,0))) AS assigned_canvass,
from am_ts_order o 
left join am_ts_assignment a
    ON a.assignment_id=o.assignment_id
left join am_user u
    ON a.tech_id=u.user_id
left join user_team ut
    ON u.user_team_id = ut.user_team_id
where u.user_role_id = 15
    and u.user_team_id = ut.user_team_id
order by u.first_name asc
group by a.tech_id

अद्यतन करें:

यह क्वेरी IF स्थितियों को यह जांचने के लिए बदल देती है कि क्या कुछ बाईं ओर शामिल तालिकाओं में एक मिलान पंक्ति पाई गई थी:

select 
    concat(u.first_name, ' ', u.last_name) as name, 
    u.skill, 
    ut.name as team_name,
    count(if(
        (NOT a.tech_id IS NULL) AND 
        (NOT u.user_id IS NULL) AND 
        a.qc_id = 0 AND 
        a.status = 2,1,0)) AS assigned_scopes,
    count(if(
        (NOT a.tech_id IS NULL) AND 
        a.qc_id > 0 AND 
        a.status = 3,1,0)) AS assigned_qa,
    count(if(
        (NOT a.assignment_id IS NULL) AND
        a.assignment_id = o.assignment_id AND 
        a.tech_id = u.user_id AND 
        a.status = 2 AND 
        a.qc_id = 0 AND 
        o.class_id= 3,1,0)) AS assigned_canvass,
from am_ts_order o 
left join am_ts_assignment a
    ON a.assignment_id=o.assignment_id
left join am_user u
    ON a.tech_id=u.user_id
left join user_team ut
    ON u.user_team_id = ut.user_team_id
where u.user_role_id = 15
    and u.user_team_id = ut.user_team_id
order by u.first_name asc
group by a.tech_id