SELECT ID_worker, Name_worker, salary+500,
FROM Supermarket
WHERE ID_worker IN ("2","4");
The above query works, as it adds 500 to the salary of workers whose ID is either 2 or 4. The problem is that only the workers with the ID 2 and 4 appear. I want all of them to appear even the ones whose salary remains the same. How do I do that?
There are several ways to do this, but the most straightforward is to use a case conditional and completely remove the select's where condition, for example:
select
ID_worker,
Name_worker,
case when ID_worker in ('2','4') then salary+500 else salary end,
from Supermarket
Related
EXAMPLE:
The issue is that I have, for example, 5 people to solve 100 cases, and the assignment has to be fair, I think that SQL through loops should be able to assign the first cases to the first 5 people, but then it has to go back to count and reassign, in case a new case falls.
I have two tables with the following fields
Technicians
ID_TEC-----NOM_TEC-----LINEA_TEC
and other whit cases
ID_CASE----DESCRIPTION_CASE
The problem arises because I have to assign cases to each technician. The assignment must be cyclic, that is:
CASE1 TECH1
CASE2 TECH2
CASE3 TECH3
CASE4 TECH1 ...
and when you load the data in the table and rerun the SP or run the job that assigns them, go back to the table, re-count the values and reassign them according to the last assigned TECn. I hope the description is clearer!
You can assign the numbers 1-5 randomly to the tasks by doing:
select t.*,
(1 + row_number() over (order by newid()) % 5) as user_assignment
from t
I have two tables. I want to find the erroneous records in the first table based on the fact that they aren't complete set as determined by the second table. eg:
custID service transID
1 20 1
1 20 2
1 50 2
2 49 1
2 138 1
3 80 1
3 140 1
comboID combinations
1 Y00020Y00050
2 Y00049Y00138
3 Y00020Y00049
4 Y00020Y00080Y00140
So in this example I would want a query to return the first row of the first table because it does not have a matching 49 or 50 or (80 and 140), and the last two rows as well (because there is no 20). The second transaction is fine, and the second customer is fine.
I couldn't figure this out with a query, so I wound up writing a program that loads the services per customer and transid into an array, iterates over them, and ensures that there is at least one matching combination record where all the services in the combination are present in the initially loaded array. Even that came off as hamfisted, but it was less of a nightmare than the awkward outer joining of multiple joins I was trying to accomplish with SQL.
Taking a step back, I think I need to restructure the combinations table into something more accommodating, but I still can't think of what the approach would be.
I do not have DB2 so I have tested on Oracle. However listagg function should be there as well. The table service is the first table and comb the second one. I assume the service numbers to be sorted as in the combinations column.
select service.*
from service
join
(
select S.custid, S.transid
from
(
select custid, transid, listagg(concat('Y000',service)) within group(order by service) as agg
from service
group by custid, transid
) S
where not exists
(
select *
from comb
where S.agg = comb.combinations
)
) NOT_F on NOT_F.custid = service.custid and NOT_F.transid = service.transid
I dare to say that your database design does not conform to the first normal form since the combinations column is not atomic. Think about it.
I'm trying to create a query that will insert new records to a table or update already existing records, but I'm getting stuck on the filtering and grouping for the criteria I want.
I have two tables: tbl_PartInfo, and dbo_CUST_BOOK_LINE.
I'm want to select from dbo_CUST_BOOK_LINE based upon the combination of CUST_ORDER_ID, CUST_ORDER_LINE_NO, and REVISION_ID. Each customer order can have multiple lines, and each line can have multiple revision. I'm trying to select the unique combinations of each order and it's connected lines, but take the connected information for the row with the highest value in the revision column.
I want to insert/update from dbo_CUST_BOOK_LINE the following columns:
CUST_ORDER_ID
PART_ID
USER_ORDER_QTY
UNIT_PRICE
I want to insert/update them into tbl_PartInfo as the following columns respectively:
JobID
DrawingNumber
Quantity
UnitPrice
So if I have the following rows in dbo_CUST_BOOK_LINE (PART_ID omitted for example)
CUST_ORDER_ID CUST_ORDER_LINE_NO REVISION_ID USER_ORDER_QTY UNIT_PRICE
SCabc 1 1 0 100
SCabc 1 2 4 150
SCabc 1 3 4 125
SCabc 2 3 2 200
SCxyz 1 1 0 0
SCxyz 1 2 3 50
It would return
CUST_ORDER_ID CUST_ORDER_LINE_NO (REVISION_ID) USER_ORDER_QTY UNIT_PRICE
SCabc 1 3 4 125
SCabc 2 3 2 200
SCxyz 1 2 3 50
but with PART_ID included and without REVISION_ID
So far, my code is just for the inset portion as I was trying to get the correct records selected, but I keep getting duplicates of CUST_ORDER_ID and CUST_ORDER_LINE_NO.
INSERT INTO tbl_PartInfo ( JobID, DrawingNumber, Quantity, UnitPrice, ProductFamily, ProductCategory )
SELECT dbo_CUST_BOOK_LINE.CUST_ORDER_ID, dbo_CUST_BOOK_LINE.PART_ID, dbo_CUST_BOOK_LINE.USER_ORDER_QTY, dbo_CUST_BOOK_LINE.UNIT_PRICE, dbo_CUST_BOOK_LINE.CUST_ORDER_LINE_NO, Max(dbo_CUST_BOOK_LINE.REVISION_ID) AS MaxOfREVISION_ID
FROM dbo_CUST_BOOK_LINE, tbl_PartInfo
GROUP BY dbo_CUST_BOOK_LINE.CUST_ORDER_ID, dbo_CUST_BOOK_LINE.PART_ID, dbo_CUST_BOOK_LINE.USER_ORDER_QTY, dbo_CUST_BOOK_LINE.UNIT_PRICE, dbo_CUST_BOOK_LINE.CUST_ORDER_LINE_NO;
This has been far more complicated that anything I've done so far, so any help would be greatly appreciated. Sorry about the long column names, I didn't get to choose them.
I did some research and think I found a way to make it work, but I'm still testing it. Right now I'm using three queries, but it should be easily simplified into two when complete.
The first is an append query that takes the two columns I want to get distinct combo's from and selects them and using "group by," while also selecting max of the revision column. It appends them to another table that I'm using called tbl_TempDrop. This table is only being used right now to reduce the number of results before the next part.
The second is an update query that updates tbl_TempDrop to include all the other columns I wanted by setting the criteria equal to the three selected columns from the first query. This took an EXTREMELY long time to complete when I had 700,000 records to work with, hence the use of the tbl_TempDrop.
The third query is a basic append query that appends the rows of tbl_TempDrop to the end destination, tbl_PartInfo.
All that's left is to run all three in a row.
I didn't want to include the full details of any tables or queries yet until I ensure that it works as desired, and because some of the names are vague since I will be using this method for multiple query searches.
This website helped me a little to make sure I had the basic idea down. http://www.techonthenet.com/access/queries/max_query2_2007.php
Let me know if you see any flaws with the ideology!
I have a select I want only one record returned for each case and am having a problem with it.
Example:
Select
CaseId, Party_id, RANKING
from...
The problem is at the charge level the case can have similar multiple charges...
Charges
Case ChargeCount RANKING
1 1 800
2 1 802
2 2 803
3 1 800
I only want 3 cases returned with the first charge meeting the criteria selected.
I tried using a simple partition by over caseId but this messed up the counts elsewhere.
Is there other ways to do this???
Thanks
How about:
SELECT CaseId, ChargeCount, Ranking FROM SomeTable WHERE ChargeCount = 1
Unless I'm missing something, it's that simple. Your example query is not exactly very illuminating to the underlying structures that you have presented.
Assuming you want exactly one row returned per CaseID:
Select
CaseId, Party_id, RANKING
from...
GROUP BY CaseID
Note that where there are multiple possible answers for each row, this will return an arbitrary one unless you define somehow the one to pick.
I'm somewhat new to SQL queries, and I'm struggling with this particular problem.
Let's say I have query that returns the following 3 records (kept to one column for simplicity):
Tom
Jack
Tom
And I want to have those results grouped by the name and also include the fraction (ratio) of the occurrence of that name out of the total records returned.
So, the desired result would be (as two columns):
Tom | 2/3
Jack | 1/3
How would I go about it? Determining the numerator is pretty easy (I can just use COUNT() and GROUP BY name), but I'm having trouble translating that into a ratio out of the total rows returned.
SELECT name, COUNT(name)/(SELECT COUNT(1) FROM names) FROM names GROUP BY name;
Since the denominator is fixed, the "ratio" is directly proportional to the numerator. Unless you really need to show the denominator, it'll be a lot easier to just use something like:
select name, count(*) from your_table_name
group by name
order by count(*) desc
and you'll get the right data in the right order, but the number that's shown will be the count instead of the ratio.
If you really want that denominator, you'd do a count(*) on a non-grouped version of the same select -- but depending on how long the select takes, that could be pretty slow.