I have following tables:
comitees: Id, Name
comitee_member: Id, Cid, Mid, C_Month
Reference: Id, Mid, Cid, Month, Ref_Number
user_type: Id, User_Name, Ref_Number
notifications: Id, Sender_Name, Reciever_Name, Month
I want to send a notification:
Suppose Mr. A has comitee_member.C_Month=9/9/2015
. When Mr. B submits his reference number for reference.Month=9/9/2015
, Mr. A recieves a notification that shows the sender's name (Mr. B), comitees.Name
, and the reference.Month
when comitee
was submitted. This data must be stored in the Notifications
table.
I have this so far:
Select us.Id,
c.Name,
cm.C_Month,
u.User_Name AS Receiver,
us.User_Name AS Sender
FROM user_type u,
user_type us
INNER JOIN reference r ON us.Id = r.Mid
INNER JOIN comitee_member cm ON r.Month = cm.C_Month
INNER JOIN comitees c ON c.Id = r.Cid
WHERE us.Id = 3 (suppose)
I guess these relationships from your sql statement:
I miss some relationships. If this is right:
you can get your results with
Select uSender.Id,
c.Name,
cm.C_Month,
uReceiver.User_Name AS Receiver,
uSender.User_Name AS Sender
FROM user_type uSender
JOIN reference r ON uSender.Id = r.Mid
JOIN comitees c ON c.Id = r.Cid
JOIN comitee_member cm ON r.Month = cm.C_Month
JOIN user_type uReceiver ON uReceiver.Id = cm.Mid;
Optional you can add your where clause. Btw, I used the short form of INNER JOIN
, just JOIN
.
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