mysql左加入多列

我正在爲我的工作構建數據庫，並且無法確定如何構建此查詢。mysql左加入多列

有關我的問題的表是：

工作

Surgical_Planning - 有工作作爲外鍵，存在一些工作，不爲別人

Medical_Model - 有工作作爲外鍵，與作業1對1的關係

這是一個工作查詢，我沒有關於手術計劃的任何信息

SELECT 
    job, 
    physician_idphysician as Physician, 
    patient_idpatient as Patient, 
    status, 
    DATE_FORMAT(scan_date, '%M %e, %Y, %l:%i%p') as Scan_Date, 
    DATE_FORMAT(timestamp, '%M %e, %Y, %l:%i%p') as Recieved, 
    DATE_FORMAT(date_required, '%M %e, %Y, %l:%i%p') as Date_Required 
    FROM 
    job, patient_has_physician as phys, Scan, Medical_Model as med 
    WHERE 
    Scan.job_job = job AND phys.job_job = job 
    AND med.job_job = job AND job.type = 'medical

我想我想做一個左連接，這樣它將按順序顯示每個作業，包含上面查詢中的所有信息，但是當有作業的Surgical_Planning時＃我希望有一列也是如此。這是我嘗試不工作

SELECT 
    job, 
    physician_idphysician as Physician, 
    patient_idpatient as Patient, 
    status, 
    DATE_FORMAT(scan_date, '%M %e, %Y, %l:%i%p') as Scan_Date, 
    DATE_FORMAT(timestamp, '%M %e, %Y, %l:%i%p') as Recieved, 
    DATE_FORMAT(date_required, '%M %e, %Y, %l:%i%p') as Date_Required 
    FROM 
    job, patient_has_physician as phys, Scan, Medical_Model as med 

    LEFT JOIN Surgical_Planning ON job.job = Surgical_Planning.job_job 
    AND Scan.job_job = job AND phys.job_job = job 
    AND med.job_job = job AND job.type = 'medical'

我能得到這個基本LEFT JOIN工作，我想要的方式，但如果我想添加更多的列像上面這是行不通的。

SELECT job, planning_id 
    FROM job 
    LEFT JOIN Surgical_Planning ON job = Surgical_Planning.job_job

可以使用子查詢嗎？我可以弄清楚這些更基本的查詢，但真正遇到這些更復雜的連接和子查詢問題。任何建議表示讚賞。

編輯---工作表模式

- 表mmrl。 job

DROP TABLE IF EXISTS mmrl。 job;

CREATE TABLE IF NOT EXISTS mmrl。job（

job INT（11）NOT NULL AUTO_INCREMENT，

type VARCHAR（45）NULL，

status VARCHAR（45）NULL DEFAULT NULL，

timestamp TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP，

PRIMARY KEY（job））

ENGINE = InnoDB

DEFAULT CHARACTER SET = latin1;

來源

2012-03-02 user1245706

變化

LEFT JOIN Surgical_Planning ON job.job = Surgical_Planning.job_job 
AND Scan.job_job = job AND phys.job_job = job 
AND med.job_job = job AND job.type = 'medical'

到

LEFT JOIN Surgical_Planning ON job.job = Surgical_Planning.job_job 
WHERE Scan.job_job = job AND phys.job_job = job 
AND med.job_job = job AND job.type = 'medical'

編輯：

左側發生一起對錶實際LEFT JOIN語法的左側。將作業移至列表的末尾並重試。

FROM patient_has_physician as phys, Scan, Medical_Model as med, job

來源

2012-03-02 18:24:00 Julien

mysql左加入多列

回答

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