I have four tables FDQueries (Firebird 3.0) COUNTRIES, REGIONS, DEPARTMENTS, AND CITIES and a fifth temporay FDQuery where to display CITIES table with related data from others tables as following :
SELECT C.NAMEXXX AS NAMEXXX, D.NAMEXXX as NAMEXXX, R.NAMEXXX AS NAMEXXX, T.NAMEXXX AS NAMEXXX
FROM GEOCITI C
LEFT JOIN GEODEPT D ON D.PKINDEX = C.FKDEPAR
LEFT JOIN GEOREGI R ON R.PKINDEX=D.FKREGIO
LEFT JOIN GEOCOUN T ON T.PKINDEX=R.FKCOUNT
The join is working perfectly and showing what i want :
Now this done, i want the user to edit the CITIES table directly from the Grid showing the joined table (Temporary) My question is how to do this the right way to update with a simple post only original CITIES Table
Thanks and sorry for my first question formulation
You can use following query to update table using join -
UPDATE CITIES
SET CITYPOPULATION = YOUR_UPDATED_VALUE
FROM CITIES C
JOIN DEPARTMENTS D ON C.departmentname = D.NAME
JOIN COUNTRIES CT ON D.countryname = CT.name;
You can read this article for further update.
Related
I have four tables where I am trying to left join the 2nd-4th to the one on the left in this picture. From left to right:
1st table (jobs) is a table of jobs
2nd table (applications_jobs) is a bridge table to link jobs and application IDs
3rd table (applications) is applications
4th table (candidates) is candidates based on those applications
I want to get some columns from 1st table (jobs) and 4th table (candidates). I want to get job name (name) and status (status) columns from jobs table. I want to get first name (first_name) and last name (last_name) from candidates table.
Here's what I've tried:
SELECT
name, status, first_name, last_name
FROM
jobs, candidates
left join
applications_jobs aj on jobs.job_id = id
left join
applications a on aj.job_id = a.id
left join
candidates c on a.candidate_id = c.id
but get a error:
ERROR: invalid reference to FROM-clause entry for table "applications_jobs"
HINT: There is an entry for table "applications_jobs", but it cannot be referenced
from this part of the query.
any ideas?
The items you are selecting should be identified by the table they are coming from when you are performing joins, though it is not always necessary if the tables don't share column names. By writing it out, it would help to prevent the confusion you're having with the FROM clause.
The FROM clause can only be from a single table. In this case, it would be your 'jobs' table. Also, to properly reference your columns in your query, the first join should be application_jobs aj ON aj.job_id = jobs.id, and your second join should be applications a ON aj.application_id = a.id.
SELECT
"jobs".name, "jobs".status, "c".first_name, "c".last_name
FROM
jobs
left join
applications_jobs aj on aj.job_id = jobs.id
left join
applications a on aj.application_id = a.id
left join
candidates c on a.candidate_id = c.id
If you are still getting NULLs for the first and last names, Then you don't have candidates that have applications for that specific job. If you want to omit results that would otherwise be NULL, you can do an INNER JOIN on candidates so that it only returns records that exist on both sides of the equation.
I understand similar question have been posted, however my issue isn't an error rather the lack of the desired result. I'm trying to join 3 tables each with 10,000 observations and combine them in the one table, however when i use inner join the observations reduce to little over 4000. I understand that INNER JOIN is essentially an intersection but I'm expecting 10,000 observations and based on my code I don't see how that is occurring. Here is my code:
SELECT *
FROM Characteristics
INNER JOIN Prices ON Prices.pid = Characteristics.pid
INNER JOIN Locations ON Locations.tid = Characteristics.tid
;
CHARACTERISTICS
||Property_Id|| ||Beds|| ||Baths|| ||Type_ID||
PRICES
||Price|| ||Year|| ||Property_ID||
LOCATIONS
||Type_ID|| ||X coord|| ||Y coord||
Those are representative of the tables I didn't include numbers because of formatting issues but as you can imagine the number contained in Property_id and Type_id are the same for all columns regardless of table, what i would like is one table with each of the respective columns containing 10,000 rows, i've checked for NA values on R and they're all of the same length.
If you want to keep all characteristics -- even when there are no matches in the other tables -- then use left join:
SELECT *
FROM Characteristics c LEFT JOIN
Prices p
ON p.pid = c.pid LEFT JOIN
Locations l
ON l.tid = c.tid;
I'm having an issue where I'm getting some incorrect values in my output. I am binding the below highlighted table column with the circled column down the bottom. The service_id on the highlighted column is what is unique, but I need to bind the booking_id to retrieve the info (if that makes sense. What I end up getting is the top table where I get repeats, or the price is wrong. I should be getting only 5 lines in the top table.
Here's my code. I suspect I might be doing the join wrong?
SELECT bad.agent as Agents,
dog.SUPPLIER as SUPPLIER,
bad.status as TheStatus,
country.analysis_master1 as Country,
ftb.booking_actual_retail as BookingActualRetail,
ftb.Booking_Actual_Cost as BookingCost,
ftb.Booking_Actual_Retail_inc as BookingRetailINC,
fts.Service_Id,
fts.Service_Actual_Retail_inc as ServiceActualCostInc,
Product.SERVICE,
Product.SL_STATUS as SLSTATUS,
cat.name as Product2,
bad.LAST_SERVICE_DATE as Servicedate,
bad.LW_DATE as LWDATE,
ftb.Entered_Date as DATEENTERED,
ftb.Booking_Pax as PEOPLE,
ftb.Booking_Children as KIDS,
bad.TRAVELDATE as TRAVELDATE,
bad.FULL_REFERENCE
from BHD bad
inner join FTB on bad.FULL_REFERENCE = ftb.booking_reference
inner join FTS on FTB.Booking_Id = fts.Booking_Id
inner join DRM Country on bad.agent = country.code
inner join BSL Product on bad.BHD_ID = Product.BHD_ID
inner join SRV cat on Product.SERVICE = cat.CODE
inner join OPT dog on Product.OPT_ID = dog.OPT_ID
where bad.STATUS = 'IV' AND bad.FULL_REFERENCE = 'LTIT129488'
UPDATE:
Ok, so it looks like this join here causes the multiple outputs:
inner join FTS on FTB.Booking_Id = fts.Booking_Id
I have included the two tables, their headers, and sample data
You have somewhere put the join for the service or supplier in the wrong way.. Please check this line again.
inner join SRV cat on Product.SERVICE = cat.CODE
UPDATED SOLUTION :
As per your updated screenshots, I found the issue...
you have joined like this.
inner join FTB on bad.FULL_REFERENCE = ftb.booking_reference
In this join, your one table has single record against booking reference while another have multiple records against booking refrence. Thats why you are getting the multiple records in the output.
Remove this join and your problem will be solved. If you really want the data from this table then you can select in other way like using outer apply etc.
I am working in Oracle APEX.I am Making report from following four tables Patient History Junction and Disease but unable to make it.
I want to SELECT
Pat_Name,Pat_Age` from Patient Table
.
Treated_By,Sys_Date from History Table
and
Dis_Name from Disease Table
.There is a Junction Table between History and Disease. Below is the diagram of the above scenario.
You need to JOIN each of the tables, similar to this:
select p.pat_name,
p.pat_age,
h.treated_by,
h.sys_date,
d.dis_name
from patient p
inner join history h
on p.pat_id = h.pat_id
and p.app_id = h.app_id
left join junction j
on p.pat_id = j.pat_id
left join disease d
on j.dis_id = d.dis_id
If you need help learning join syntax, check this helpful visual explanation of joins.
Notice that I used an INNER JOIN between patient and history and joined the tables on both keys in patient. This type of join will return all matching records in both tables.
I used a LEFT JOIN on the other two tables which will return all of the patient/history data even if there is not a matching record in the other two tables. Depending on your need, you might be able to use an INNER JOIN on those tables.
I'm using an Access Database that is designed relationally. I have a list of patient IDs in an Excel spreadsheet that I imported and made into a table in Access named importedPatients. There is a related table named Counties that is a one to many relationship for the main Patients table. How can I use the patientIDs present in the importedPatients table to quickly query out information in the related Counties table? Is there an idiomatic way to tackle this?
This diagram can give you an idea:
and here is SQL generated by the Designer:
SELECT importedPatients.ImportedPatientID, Patients.PatientName, Counties.County
FROM (Counties INNER JOIN Patients ON Counties.CountyID = Patients.CountyID)
INNER JOIN importedPatients ON Patients.PatientID = importedPatients.ImportedPatientID
This will give you county information for each record in importedPatients:
SELECT counties.*
FROM counties INNER JOIN (importedpatients INNER JOIN patients ON
importedpatients.patientid = patients.patientID) ON
counties.countyid = patients.countyid