I've got a problem with MySQL select statement.
I have a table with different Department and statuses, there are 4 statuses for every department, but for each month there are not always every single status but I would like to show it in the analytics graph that there is '0'.
I have a problem with select statement that it shows only existing statuses ( of course :D ).
Is it possible to create temporary table with all of the Departments , Statuses and amount of statuses as 0, then update it by values from other select?
Select statement and screen how it looks in perfect situation, and how it looks in bad situation :
SELECT utd.Departament,uts.statusDef as statusoforder,Count(uts.statusDef) as Ilosc_Statusow
FROM ur_tasks_details utd
INNER JOIN ur_tasks_status uts on utd.StatusOfOrder = uts.statusNR
WHERE month = 'Sierpien'
GROUP BY uts.statusDef,utd.Departament
Perfect scenario, now bad scenario :
I've tried with "union" statements but i don't know if there is a possibility to take only "the highest value" for every department.
example :
I've also heard about
With CTE tables, but I don't really get how to use it. Would love to get some tips on it!
Thanks for your help.
Use a cross join to generate the rows you want. Then use a left join and aggregation to bring in the data:
select d.Departament, uts.statusDef as statusoforder,
Count(uts.statusDef) as Ilosc_Statusow
from (select distinct utd.Departament
from ur_tasks_details utd
) d cross join
ur_tasks_status uts left join
ur_tasks_details utd
on utd.Departament = d.Departament and
utd.StatusOfOrder = uts.statusNR and
utd.month = 'Sierpien'
group by uts.statusDef, d.Departament;
The first subquery should be your source of all the departments.
I also suspect that month is in the details table, so that should be part of the on clause.
Related
I want to check 2 databases to see if the money-payments are the same as the total. That is possible, but I get a very long table:
select
transaction_id
,total_low+total_high a
, sum(money_received) b
from
archive_transaction inner join archive_transaction_payment
on archive_transaction.id=archive_transaction_payment.transaction_id
group by transaction_id;
Actually I only want the transactions where the total is wrong!!
So now I want to add a!=b and that gives an invalid query. How to proceed?
Table archive_transaction has 1 row per transaction, but archive_transaction_payment can have multiple payments for one transaction. This makes it complicated for me.
select
transaction_id
,total_low+total_high a
, sum(money_received) b
from archive_transaction inner join archive_transaction_payment
on archive_transaction.id=archive_transaction_payment.transaction_id
where
a!=b
group by transaction_id;
Joins are still problematic for me, but I found an answer without join to find faults in the database.
SELECT id
FROM archive_transaction a
WHERE total_low + total_high != (SELECT Sum(money_received)
FROM archive_transaction_payment b
WHERE a.id = b.transaction_id);
Now I get a short list of problems in my database. Thanks for helping me out.
I need to write a query that joins several tables and totals several columns in different tables & can't seem to figure out how to do it:
here are the tables:
The result I am trying to get is a result with the contract budgets for a particular budget name added: i.e. [this does not work but gives an idea]
select c.contract_budget_f1, c.contract_budget_f2, cb.budget_type_id, c.id, sum(cb.budget_f1) as bf1, sum(cb.budget_f2) as bf2
from `flow_contract` c
left join `flow_contract_budget` cb on cb.contract_id = c.id
where c.program_id = '69'
group by cb.budget_type_id
with the whole result set looking like:
[budget_type_id]
[contract_budget_f1]
[contract_budget_f2]
[bf1]
[bf2]
where it will return 3 rows with the budgets for each budget type added
How can I do this, is it even possible?
Here are links to the tables - sorry, didn't realize you couldn't click on them...
http://media.bigblockstudios.ca/stack/program-name.gif
http://media.bigblockstudios.ca/stack/contract-budget.gif
http://media.bigblockstudios.ca/stack/contracts.gif
UPDATE
I got it working like this:
select c.id, c.program_id, c.contract_budget_f1, c.contract_budget_f2, cb.budget_f1, cb.budget_f2, cb.budget_type_id, c.id,
sum(cb.budget_f1) as bf1, sum(cb.budget_f2) as bf2
from `flow_contract` c
left join `flow_contract_budget` cb on cb.contract_id = c.id
where c.program_id = '".$formfields['program_id']."'
group by cb.budget_type_id
order by cb.budget_type_id
I think what you want is:
group by cb.budget_type_id, cb.contract_id
Or the other way around. Could you make an sql fiddle?
Short Answer: subquery
Try this:
Start with a subquery.
Write a query that produces the column values that you want to sum. This is now the subquery.
Write an outter query that sums the desired columns in the inner query.
After you get it working, review it to see if you can optimize out the subquery and just have one query.
I am using the following JOIN statement:
SELECT *
FROM students2014
JOIN notes2014 ON (students2014.Student = notes2014.NoteStudent)
WHERE students2014.Consultant='$Consultant'
ORDER BY students2014.LastName
to retrieve a list of students (students2014) and corresponding notes for each student stored in (notes2014).
Each student has multiple notes within the notes2014 table and each note has an ID that corresponds with each student's unique ID. The above statement is returning a the list of students but duplicating every student that has more than one note. I only want to display the latest note for each student (which is determined by the highest note ID).
Is this possible?
You need another join based on the MAX noteId you got from your select.
Something like this should do it (not tested; next time I'd recommed you to paste a link to http://sqlfiddle.com/ with your table structure and some sample data.
SELECT *
FROM students s
LEFT JOIN (
SELECT MAX(NoteId) max_id, NoteStudent
FROM notes
GROUP BY NoteStudent
) aux ON aux.NoteStudent = s.Student
LEFT JOIN notes n2 ON aux.max_id = n2.NoteId
If I may say so, the fact that a table is called students2014 is a big code smell. You'd be much better off with a students table and a year field, for many reasons (just a couple: you won't need to change your DB structure every year, querying across years is much, much easier, etc, etc). Perhaps you "inherited" this, but I thought I'd mention it.
GROUP the query by studentId and select the MAX of the noteId
Try :
SELECT
students2014.Student,
IFNULL(MAX(NoteId),0)
FROM students2014
LEFT JOIN notes2014 ON (students2014.Student = notes2014.NoteStudent)
WHERE students2014.Consultant='$Consultant'
GROUP BY students2014.Student
ORDER BY students2014.LastName
I have 2 simple tables - Firm and Groups. I also have a table FirmGroupsLink for making connections between them (connection is one to many).
Table Firm has attributes - FirmID, FirmName, City
Table Groups has attributes - GroupID, GroupName
Table FirmGroupsLink has attributes - FrmID, GrpID
Now I want to make a query, which will return all those firms, that have less groups then #num, so I write
SELECT FirmID, FirmName, City
FROM (Firm INNER JOIN FirmGroupsLink ON Firm.FirmID =
FirmGroupsLink.FrmID)
HAVING COUNT(FrmID)<#num
But it doesn't run, I try this in Microsoft Access, but it eventually should work for Sybase. Please show me, what I'm doing wrong.
Thank you in advance.
In order to count properly, you need to provide by which group you are couting.
The having clause, and moreover the count can't work if you are not grouping.
Here you are counting by Firm. In fact, because you need to retrieve information about the Firm, you are grouping by FirmId, FirmName and City, so the query should look like this:
SELECT Firm.FirmID, Firm.FirmName, Firm.City
FROM Firm
LEFT OUTER JOIN FirmGroupsLink
ON Firm.FirmID = FirmGroupsLink.FrmID
GROUP BY Firm.FirmID, Firm.FirmName, Firm.City
HAVING COUNT(FrmID) < #num
Note that I replace the INNER JOIN by a LEFT OUTER JOIN, because you might want Firm which doesn't belongs to any groups too.
I just imported a large amount of data into two tables. Let's call them shipments and returns.
When trying to do a simple join (left or inner) based on any criteria in these two tables. query looks like it tries to do a cross join or find every combination instead of what the query should be pulling.
each table has an PK id field, but there is not FK relationship between the two other than some shared field.
I'm currently just trying to related them on shipment_id.
I feel this is a simple answer. Am I missing a reference or something obvious that is causing this? Thanks!
here's an example. This should returned under 100 rows. This instead returns hundreds of thousands.
SELECT r.*
FROM returns as r
left outer join shipments as s
on r.shipment_id = s.shipment_id
where r.date = '2011-06-20'
Here is a query that should work:
SELECT T0.*, T1.*
FROM shipments AS T0 LEFT JOIN returns AS T1 ON T0.shipment_id = T1.shipment_id
ORDER BY T0.shipment_id;
This query join assumes 1:1 on the shipment_id
It would be nice if you included the query you were using
You need to specify what you are joining on, otherwise it will do a cartesian join:
SELECT r.*
FROM returns as r
LEFT JOIN shipments as s ON s.shipment_id = r.shipment_id
where r.date = '2011-06-20'
Josh,
I would be interested in seeing what would happen if you forced a join to a specific record or set of records instead of the whole table. Assuming there is a shipment with an id of 5 in your table, you could try:
SELECT r.* FROM returns as r
left join shipments as s
ON 5 = r.shipment_id
WHERE r.date = '2011-06-20'
While just a fancy where clause, it would at least prove that the join you are attempting will eventually work correctly. The issue is that your on clause is always returning true, no matter what the value is. This could be because it's not interpreting the shipment_id as an integer, but instead as a true/false variable where any value evaluates to true.
Original Rejected Solution:
No Foreign Key relationship should be needed in order to make the joins happen. The PK id fields I'm assuming are an integer (or number, or whatever your rdms equivalent is)?
Can you past a snippet of your sql query?
Updating based on posted query:
I would add your explicit join criteria in order to rule out any funny business (my guess is since no criteria is specified, it's using 1=1, which always joins). So I would change your query to look like:
SELECT r.*
FROM returns as r
left join shipments as s ON
s.ShipId = R.ReturnId
where r.date = '2011-06-20'
The issue turned out to be very simple, just not readily apparent until going through all the columns. It turns out that the shipment ID was duplicated through every row as it hit the upper limit for the int datatype. This is why joins were returning every record.
After switching the datatype to bigint and reimporting, everything worked great. Thanks all for looking into it.