Mysql收集數據與在哪裏條件

Question

我正在開發招聘門戶網站的應用程序..

員工正在註冊與他們的資格。

員工註冊成功後，

在兩個條件下添加資格的工作。

即AND，OR情況。

假設一個工作具有兩個AND條件的資格。

Engineering | Btech | Mechanical Engineering | regular | 80 % 
Diploma | CAD | Computer Applications | Distance | 70% 

---

Engineering | Btech | Mechanical Engineering | regular | 80 % 
Diploma | | | | 70% 

進入工作資格，我收集，作爲一個數組等之後。

$a = ["27","26"]; // dummy data 
    $b = ["62"]; // dummy data 
    $c = ["59"]; // dummy data 

我想從我的員工資歷表收集員工ID數據符合上述條件。

我試過在哪裏查詢像下面。

SELECT * FROM `otc_employee_qualifications` 
WHERE `emp_qualifctn_type` IN ('26','27') 
AND `qualification_value` IN ('59','32') 
AND `emp_qualifctn_branch` IN ('156') 
AND `emp_qualifctn_stream` IN ('2') 
AND `qualification_mark` >= 27 
GROUP BY `employee_id` 

Answer 1

嘗試使用AND代替where加入兩個條件。

SELECT * FROM `otc_employee_qualifications` 
WHERE `emp_qualifctn_type` IN ('26','27') 
AND `qualification_value` IN ('59','32') 
AND `emp_qualifctn_branch` IN ('156') 
AND `emp_qualifctn_stream` IN ('2') 
AND `qualification_mark` >= 27 
GROUP BY `employee_id` 

Answer 2

使用後，其中

SELECT * FROM `otc_employee_qualifications` 
WHERE `emp_qualifctn_type` IN ('26','27') 
AND `qualification_value` IN ('59','32') 
AND `emp_qualifctn_branch` IN ('156') 
AND `emp_qualifctn_stream` IN ('2') 
AND `qualification_mark` >= 27 
GROUP BY `employee_id` 

Answer 3

使用AND和更改條件

SELECT * FROM `otc_employee_qualifications` 
WHERE `emp_qualifctn_type` IN ('26','27') 
AND `qualification_value` IN ('59','32') 
AND `emp_qualifctn_branch` IN ('156') 
AND `emp_qualifctn_stream` IN ('2') 
AND `qualification_mark` >= 27 
GROUP BY `employee_id` 

Answer 4

嘗試AND而不是WHERE除了WHERE的第一次。
SELECT * FROM otc_employee_qualifications WHERE emp_qualifctn_type IN ('26','27') AND qualification_value IN ('59','32') AND emp_qualifctn_branch IN ('156') AND emp_qualifctn_stream IN ('2') AND qualification_mark >= 27 GROUP BY employee_id