My title is a bit ambigious but I'll try to clarify below.
I've created a view (A) with a couple of joins. I'm trying to join that view with another view (B). Both views contain a year field, Company ID, Industry ID and a, let's call it, Product code that takes a value of I or U.
View B also contains employee ID, natrually there are multiple employee IDs for every Company ID. Any employee ID could have a Product code that is I, U or both. If it has both there will be 2 identical employee IDs distiguished by the produc code.
Now I want to join view A on Year, Customer ID, Industry ID and Product Code. BUT, since every Customer ID in view B could occure twice (if the underlying employees for that customer have both product code I and U) I only want to join once.
This is the distribution of Customer IDs for Product Codes:
I and NOT U: 165'370
U and NOT I: 45'27
U and I : 48'920
left join [raw].[ViewA] a on a.year=b.year and a.CustomerID=b.CustomerID
and a.IndustryID=b.IndustryID and a.ProductCode ='I'
This is the join I'm running with currently, though I'm excluding all records where the CustomerID only have product code U. The reason why I want to only join once per Customer ID/Year/IndustryID is because I'm later on aggregating some other value from View A. Thus, I can't have that value appear twice.
Current result
Year CustomerID IndustyID ProductCode Value
2015 A Z I 50
2015 A Z U NULL
2015 B Z I 40
2016 A Z I 20
2016 B Z U NULL
What I'd like
Year CustomerID IndustyID ProductCode Value
2015 A Z I 50
2015 A Z U NULL
2015 B Z I 40
2016 A Z I 20
2016 B Z U 30
If I understand correctly, try something as following
[pseudocode]
left join ( Select *, rank() over (partition by whatMakesItUnique Order by ProductCode) distinction From tableA ) a
on your conditions + a.distinction = 1
The idea is to assign number 1 either if there are 2 rows for whatMakesItUnique to ProductCode "I" or to "U" when there is only one row and then join on this assigned number
"whatMakesItUnique" are probably columns Year, CustomerID, IndustyID in your case.
I think you can do what you want with outer apply:
outer apply
(select top (1) a.*
from [raw].[ViewA] a
where a.year = b.year and a.CustomerID = b.CustomerID and
a.IndustryID = b.IndustryID
order by (case a.ProductCode when 'I' then 1 when 'U' then 2 else 3 end)
) a
This will return one row from ViewA, prioritized by the product code.
Related
thanks in advance for any help on this, I am a bit of a newbie to MS SQL and I want to do something that I think is achievable but don't have the know how.
I have a simple table called "suppliers" where I can do (SELECT id, name FROM suppliers ORDER BY id ASC)
id
name
1
ACME
2
First Stop Business Supplies
3
All in One Supply Warehouse
4
Farm First Supplies
I have another table called "products"
id
name
supplier_id
1
Item 1
2
2
Item 2
1
3
Item 3
1
4
Item 4
3
5
Item 5
2
I want to list all the suppliers and get the total amount of products for each supplier if that makes sense on the same row? I am just not sure how to pass the suppliers.id through the query to get the count.
I am hoping to get to this:
id
name
total_products
1
ACME
2
2
First Stop Business Supplies
2
3
All in One Supply Warehouse
1
4
Farm First Supplies
0
I really appreciate any help on this.
Three concepts to grasp here. Left Join, group by, and Count().
select s.id, s.name, Count(*) as total_products
from suppliers s
left join products p on s.id=p.supplier_id --the left join gets your no matches
group by s.id, s.name
left join is a join where all of the values from the first table are kept even if there are no matches in the second.
Group by is an aggregation tool where the columns to be aggregated are entered.
Count() is simply a count of transactions for the grouped columns.
Try this :-
SELECT id, name, C.total_products
FROM Suppliers S
OUTER APPLY (
SELECT Count(id) AS total_products
FROM Products P
WHERE P.supplier_id = S.id
) C
I have sql query where I have to join three tables. One of this is a table with data of invoice, it looks like this:
INVOICE
ID CUSTOMER_NAME TAXID NUMBER LABEL GUID
1 CUSTOMER1 8739281100 FV001/2019 1 04EABFB3-0B9D-4749-B99D-A4EBEE079633
POSITION OF INVOICE
ID ID_INV POSITION_NAME COUNT
1 1 NAME1 3
2 1 NAME2 2,5
TABLE WITH LABEL
ID NAME VALUE GUID_INV
1 LABEL1 true 04EABFB3-0B9D-4749-B99D-A4EBEE079633
When I want to run this query I have statement like this multiple rows in singleton select.
This is for Firebird 2.5.
SELECT
a.ID,
a.GUID,
a.NUMBER,
a.CUSTOMER_NAME,
b.COUNT,
(select usrd.LABEL from USER_FIELD_DEFS usrd
where usrd.GUID_INV=a.GUID and (usrd.ID=1 and usrb.VALUE='true')) as LABEL_NAME
FROM INVOICE a
join POSITION_INVOICE b ON a.ID=b.ID_INV
I want to get result like this
1 04EABFB3-0B9D-4749-B99D-A4EBEE079633 FV001/2019 CUSTOMER1 3 LABEL1
1 04EABFB3-0B9D-4749-B99D-A4EBEE079633 FV001/2019 CUSTOMER1 2,5 LABEL1
Please help with this. I know that solution maybe is very simple but I have some eclipse of the mind:)
This should give you the rows you want based on the 3 tables you provided. If there is a chance that an invoice has no position then simply replace the inner join with left join
SELECT
I.[Id]
,I.[GUID]
,I.[NUMBER]
,I.[CUSTOMER_NAME]
,IP.[POSITION_NAME]
,L.[NAME]
FROM [INVOICE] I
INNER JOIN [IN_P] IP ON IP.ID_INV = I.Id
LEFT JOIN [LABEL] L ON L.[GUID_INV] = I.[GUID]
You are just missing one more join here. Assuming USER_FIELD_DEFS is the same as TABLE WITH LABEL that you have mentioned here
SELECT
a.ID,
a.GUID,
a.NUMBER,
a.CUSTOMER_NAME,
b.COUNT,
c.NAME
FROM INVOICE a
JOIN POSITION_INVOICE b ON a.ID=b.ID_INV
JOIN USER_FIELD_DEFS c ON c.GUID_INV = a.GUID AND c.ID=1 and c.VALUE='true'
We have a situation in which one part of our stored procedure need to be filled with a join query, which had multiple filters in it. We need a solution only with join (it is easy to implement in the subquery, but our situation demands it to be a join [since the procedure has a where clause followed by it] )
We have two tables Customer and Order. We need to exclude the rows of Customer table, if Customer_id is present Order table & order_code = 10 & Customer.Grade = 3. It is not mandatory for all Customer_id to be present in Order table, but we still need it in the final result.
Customer Table OrderTable
Customer_id Grade Customer_id order_code
1 3 1 10
2 3 1 40
3 2 2 50
4 3 3 30
*Multiple Customer_id can be present in the OrderTable
Expected result :
Customer_id Grade
2 3
3 2
4 3
I think this may be what you need, not sure I understand the question properly.
select c.id, c.grade
from customer c left join customer_order o on (c.id = o.customer_id and o.order_code <> 10)
where c.grade = 3
This should give you all customers with a Grade of 3 that also have orders, provided the order_code is not 10. If you want to show customers that do not have any orders also, make it a left join.
You can express the logic like this:
select c.*
from customers c
where not (grade = 3 and
exists (select 1
from orders o
where o.customer_id = c.customer_id and
o.order_code = 10
)
);
I'm trying to do an inner join in a nested select statement. Basically, There are first and last reason IDs that produce a certain number (EX: 200). In another table, there are definitions for the IDs. I'm trying to pull the Last ID, along with the corresponding comment for whatever is pulled (EX: 200 - Patient Cancelled), then the first ID and the comment for whatever ID it is.
This is what I have so far:
Select BUSN_ID
AREA_NAME
DATE
AREA_STATUS
(Select B.REASON_ID
A.LAST_REASON_ID
FROM BUSN_INFO A, BUSN_REASONS B
WHERE A.LAST_REASON _ID=B.REASON_ID,
(Select B.REASON_ID
A. FIRST_REASON_ID
FROM BUSN_INFO A, BUSN_REASONS B
WHERE A_FIRST_REASON_ID = B.REASON_ID)
FROM BUSN_INFO
I believe an inner join is best, but I'm stuck on how it would actually work.
Required result would look like (this is example dummy data):
First ID -- Busn Reason -- Last ID -- Busn Reason
1 Patient Sick 2 Patient Cancelled
2 Patient Cancelled 2 Patient Cancelled
3 Patient No Show 1 Patient Sick
Justin_Cave's SECOND example is the way I used to solve this problem.
If you want to use inline select statements, your inline select has to select a single column and should just join back to the table that is the basis of your query. In the query you posted, you're selecting the same numeric identifier multiple times. My guess is that you really want to query a string column from the lookup table-- I'll assume that the column is called reason_description
Select BUSN_ID,
AREA_NAME,
DATE,
AREA_STATUS,
a.last_reason_id,
(Select B.REASON_description
FROM BUSN_REASONS B
WHERE A.LAST_REASON_ID=B.REASON_ID),
a.first_reason_id,
(Select B.REASON_description
FROM BUSN_REASONS B
WHERE A.FIRST_REASON_ID = B.REASON_ID)
FROM BUSN_INFO A
More conventionally, though, you'd just join to the busn_reasons table twice
SELECT i.busn_id,
i.area_name,
i.date,
i.area_status,
i.last_reason_id,
last_reason.reason_description,
i.first_reason_id,
first_reason.reason_description
FROM busn_info i
JOIN busn_reason first_reason
ON( i.first_reason_id = first_reason.reason_id )
JOIN busn_reason last_reason
ON( i.last_reason_id = last_reason.reason_id )
Ok I have two tables.
Table IDAssoc has the columnsbill_id, year, area_id.
Table Bill has the columns bill_id, year, main_id, and amount_due.
I'm trying to get the sum of the amount_due column from the bill table for each of the associated area_ids in the IDAssoc table.
I'm doing a select statement to select the sum and joining on the bill_ids. How can I set this up so it will have a single row for each of the associated bills in each area_id from the assoc table. There may be three or four bill_ids associated with each area_id and I need those summed for each and returned so I can use this select in another statement. I have a group by set up for the area_id but it still is returning each row and not summing them up for each area_id. I have the year and main_id specified already in the where clause to return the data that I want, but I can't get the sum to work properly. Sorry I'm still learning and I'm not sure how to do this. Thanks!
Edit- Basically the query I'm trying so far is basically just like the one posted below:
select a.area_id, sum(b.amount_due)
from IDAssoc a
inner join Bill b
on a.bill_id = b.bill_id
where Bill.year = 2006 and bill.bill_id = 11111
These are just arbitrary numbers.
The data this is returning is like this:
amount_due - area_id
.05 1003
.15 1003
.11 1003
65 1004
55 1004
I need one row returned for each area_id with the amount_due summed. The area_id is only in the assoc table and not in the bill table.
select a.area_id, sum(b.amount_due)
from IDAssoc a
inner join Bill b
on a.bill_id = b.bill_id
where b.year = 2006 and b.bill_id = 11111
group by a.area_id
You might want to change inner join to left join if one IDAssoc can have many or no Bill:
select a.area_id, coalesce(sum(b.amount_due),0)
from IDAssoc a
left join Bill b
on a.bill_id = b.bill_id
where b.year = 2006 and b.bill_id = 11111
group by a.area_id
You are missing the GROUP BY clause:
SELECT a.area_id, SUM(b.amount_due) TotalAmount
FROM IDAssoc a
LEFT JOIN Bill b
ON a.bill_id = b.bill_id
GROUP BY a.area_id