Is there a way to join four data tables depend on date in order to view all patient details? Below are my tables with columns:
registration
(re_id,firstname,lastname,phone)
patientnotes
(paid,notes,re_id,tarehe)
laboratory
(labid,investigations,re_id,tarehe)
result
(rid,result,re_id,tarehe)
Yes, you can join as many tables as you want. It looks like the common id between all your tables is the re_id, so use that to join across all records into a single row, and select the columns you want in the resulting table.
SELECT *
FROM registration
INNER JOIN patientnotes ON patientnotes.re_id = registration.re_id
INNER JOIN laboratory ON laboratory.re_id = registration.re_id
INNER JOIN result ON result.re_id = registration.re_id
Related
I believe I have formed this question title correctly because I wasn't sure how to form it. As an example, I have summarized my query below.
I have an order table which saves order details like customer id, address and product ids and quantity ordered for each order in a row. So multiple inventory/product ids are saved in a single row.
so my query looks like: this is a summarized query for an easier explanation I have omitted various other fields.
SELECT customer.name,customer.address,tbl_order.order_date,tbl_order.product1_id,tbl_order.product2_id,inventory.product1_name,inventory.product2_name
FROM tbl_order
INNER JOIN customer ON tbl_order.customer_id = customer.id
INNER JOIN inventory on tbl_order.product1_id = inventory.id
INNER JOIN inventory on tbl_order.product2_id = inventory.id
where YEAR(tbl_order.order_date)='$year'
So my question is how to get the inventory details from the inventory table based on each product id from tbl_order. I am running a while loop to show all data for a year
while($row=mysqli_fetch_assoc($sql1))
I can divide this query into 2 and run the inventory query individually but then how to combine the while loop, as sometimes there could also be empty query when some products are not in order table (depending on order to order, not all products are ordered) so this doesn't work
while($row=mysqli_fetch_assoc($sql1)) and ($row1=mysqli_fetch_assoc($inv1)) and ($row2=mysqli_fetch_assoc($inv2))
and so one for 10 products
First, of all you have bad DB design and I kindly advice to normalize your DB.
Second, if you can not re-design the DB you can use multiple joins with aliases like:
SELECT
customer.name, customer.address, tbl_order.order_date,
tbl_order.product1_id, inv1.product1_name,
tbl_order.product2_id, inv2.product2_name
FROM tbl_order
INNER JOIN customer ON tbl_order.customer_id = customer.id
INNER JOIN inventory AS inv1 ON tbl_order.product1_id = inv1.id
INNER JOIN inventory AS inv2 ON tbl_order.product2_id = inv2.id
WHERE YEAR(tbl_order.order_date)='$year'
I am newish to SQL and Join statements and I am way out of my league at the moment
I currently have 6 Database Tables that are all linked to the main 7th table based on the main tables ID, however all the information in the other 6 tables are looped and so have several displayed results to the one main tables ID.
Is it possible to join them all into one Join Statement so I can have a results so that everyones information from the main table also shows their information from the 6 other linked tables
So basically when they all have the informationed joined I want to be able to Display all information on a webpage
so I was wondering do I need to do multiple JOIN statements or just one Longer one?
I have Included some Images below that explain it visually. See examples 1 and 2
The columns that are highlighted in yellow are looped to have many results:
2. This is the example of how the information is looped into the
database where there are many Race_id sharing to the same inf_id:
Im not so sure how it will look once it has been joined since some of the information is looped into many Id's and not sure if that means it need to duplicate the column or the rows?? any help would be greatly appreciated.
You could use left join eg for the first tables influencer, social, activities
select i.*, s.follower, s.Social_Medial_URL, a.activity, a.result
from influencer i
left join social s on s.inf_id = i.id
left join activities a on a.inf_id = i.id
you can procede yourself adding the left join for the others tables using the same rules
select i.*
, s.follower_count
, s.social_media_url
, a.compete_activity
, a.compete_results
from influencers i
left join inf_other_social s on s.inf_id = i.id
left join inf_compete_activity a on a.inf_id = i.id
LIMIT 0, 25
I think you are confused about primary key and foreign key. the picture you have given is clearly elaborate everything. as per your db diagram the query might be like this...
select * from
Influencer i
Left Join Social s on i.inf_id = s.inf_id
Left Join Owned_Equip o on i.inf_id=o.inf_id
Left Join Ages_Interacted a on i.inf_id = a.inf_id
Left Join Activities ac on i.inf_id = ac.inf_id
Left Join Awards aw on i.inf_id = aw.inf_id
Left Join History h on i.inf_id = h.inf_id
By using this above query you can get all the information of Influencer and related to him (Social,Owned_Equip,Activities,Award etc) whether they exists or not. If you using only "Join" not "Left Join" then you can only find those records which is common for a single influencer to it's related entities/tables which might you say. as an example: say Influencer (id = 1 , suppose name is dan) after inner join we can get only records related to dan ( his social,owned equipments,activites,awards and so on if those tables contains record related to dan record)
Im having a bit of difficulty with getting user information from one place to another.
There are 3 tables dbo.gr_usersource and dbo.gr_task and dbo.gr_user
In the dbo.gr_task table a column is filled with values that match entries in dbo.gr_usersource table that has another value that corresponds to the value in the dbo.gr_user table. You could call it a reference table between dbo.gr_task and dbo.gr_user tables.
My query looks like this;
select
dbo.gr_task.task_number
, dbo.gr_task.task_name
, dbo.gr_task.task_description
from dbo.gr_task
left join dbo.gr_user AS Handler
on dbo.gr_usersource.usersource_user = Handler.user_id
and dbo.gr_task.task_handler = dbo.gr.usersource.usersource.id
The last step would be to get the column user_name from table user when the join is working.
You have missed mediator table in your join so use as per below-
SELECT dbo.gr_task.task_number,dbo.gr_task.task_name, dbo.gr_task.task_description
FROM dbo.gr_task AS gt
LEFT JOIN dbo.gr_usersource gus ON gt.task_handler=gus.usersource.id
LEFT JOIN dbo.gr_user AS gu ON gus.usersource_user=gu.user_id;
Note: If you want only matching rows in all 3 tables then you should use normal join instead of left join.
This may work for you.
Note that there are no columns from your joined tables in your select list so left joins would have no impact on your result set.
Inner joins will filter your results set even if you bring back no columns, i.e., enforce the join condition to match rows in both tables.
SELECT
t.task_number
, t.task_name
, t.task_description
FROM dbo.gr_task t
INNER JOIN dbo.gr_usersource us
ON us.usersource.id = t.task_handler
INNER JOIN dbo.gr_user u
ON u.user_id = us.usersource_user
It's been so long since I did any Mysql queries I forgot how to do basic joins. I have two tables:
Orders_ and
Members
I need to create one view which displays all the orders with the associated Email and Member_Id.
http://i.imgur.com/7ttXtrk.png <-- Tables
The query, based on your image, should look like so:
SELECT Orders.*, Members.*
FROM Orders
INNER JOIN Members ON Orders.coordinateList_Id = Members.Members_Member`
I would refer to the MySQL reference
SELECT *
FROM Orders
INNER JOIN Members
ON Orders.coordinateList_Id = Members.Members_Member
I have the following query:
SELECT
dashboard_data.headline,
dashboard_data.message,
dashboard_messages.image_id
FROM dashboard_data
INNER JOIN dashboard_messages
ON dashboard_message_id = dashboard_messages.id
So I am using an INNER JOIN and grabbing the image_id. So now, I want to take that image_id and turn it into images.filename from the images table.
How can I add that in to my query?
You can simply add another join like this:
SELECT dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename
FROM dashboard_data
INNER JOIN dashboard_messages
ON dashboard_message_id = dashboard_messages.id
INNER JOIN images
ON dashboard_messages.image_id = images.image_id
However be aware that, because it is an INNER JOIN, if you have a message without an image, the entire row will be skipped. If this is a possibility, you may want to do a LEFT OUTER JOIN which will return all your dashboard messages and an image_filename only if one exists (otherwise you'll get a null)
SELECT dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename
FROM dashboard_data
INNER JOIN dashboard_messages
ON dashboard_message_id = dashboard_messages.id
LEFT OUTER JOIN images
ON dashboard_messages.image_id = images.image_id
Just add another join:
SELECT dashboard_data.headline,
dashboard_data.message,
dashboard_messages.image_id,
images.filename
FROM dashboard_data
INNER JOIN dashboard_messages
ON dashboard_message_id = dashboard_messages.id
INNER JOIN images
ON dashboard_messages.image_id = images.image_id
I shared my experience of using two LEFT JOINS in a single SQL query.
I have 3 tables:
Table 1) Patient consists columns PatientID, PatientName
Table 2) Appointment consists columns AppointmentID, AppointmentDateTime, PatientID, DoctorID
Table 3) Doctor consists columns DoctorID, DoctorName
Query:
SELECT Patient.patientname, AppointmentDateTime, Doctor.doctorname
FROM Appointment
LEFT JOIN Doctor ON Appointment.doctorid = Doctor.doctorId //have doctorId column common
LEFT JOIN Patient ON Appointment.PatientId = Patient.PatientId //have patientid column common
WHERE Doctor.Doctorname LIKE 'varun%' // setting doctor name by using LIKE
AND Appointment.AppointmentDateTime BETWEEN '1/16/2001' AND '9/9/2014' //comparison b/w dates
ORDER BY AppointmentDateTime ASC; // getting data as ascending order
I wrote the solution to get date format like "mm/dd/yy" (under my name "VARUN TEJ REDDY")
Multi joins in SQL work by progressively creating derived tables one after the other.
See this link explaining the process:
https://www.interfacett.com/blogs/multiple-joins-work-just-like-single-joins/