I have a table with 4 columns such as Customer ID, Person ID, Year, Unit Cost.
I want to join the same table with all the years from table and keep the all years for all customer ID and PErson ID's. IF there is no data in the table for respective customer ID and PErson ID then I want the Cost as NULL.
Expected Data:
If I understand correctly, you can use a cross join to generate the rows and a left join to bring in the existing data:
select pc.*, y.*, t.cost
from (select distinct customer, personid from customer_table) pc cross join
(select distinct year from customer_table) y left join
customer_table t
on t.customer = pc.customer and t.personid = pc.personid and t.year = y.year;
Related
I have Database table and trying to write query to find sold and not sold product list from one table.
Table is Below
Expecting Result
How do i get this result? i am using CTE to create Tamp table and with all services and then do left join but it dose give me only product sold in Feb, but i want all product with no sell too.
You can cross join the products and the dates, and then bring the table with a left join:
select
p.product,
t.quantity_sold,
d.yr,
d.mn
from (select distinct product from mytable) p
cross join (select distinct yr, mn from mytable) d
left join mytable t
on t.product = p.product
and t.yr = d.yr
and t.mn = d.mn
This puts nulls for rows with no sale - that's presumably a numeric column so you generally don't want to write a string like 'Not Sold' into it.
If there is a possibility of duplicate (product, yr, mn), you might want to use outer aggregation:
select
p.product,
sum(t.quantity_sold) quantity_sold,
d.yr,
d.mn
from (select distinct product from mytable) p
cross join (select distinct yr, mn from mytable) d
left join mytable t
on t.product = p.product
and t.yr = d.yr
and t.mn = d.mn
group by p.product, d.yr, d.mn
I would like some help on this matter.
I Have three tables.
Products Table,
Invoice Table,
Cash Table
Products Table has 2 Columns as follows (PID,BRAND)
Invoice Table has 2 columns as follows (PID,TOTALSALES)
Cash Table has 2 columns as follows (PID,TOTALSALES)
The PID's could have many different BRANDS.
for eg:
PID BRAND
1 TEST1
2 TEST2
3 TEST3
All the three tables are linked by the PID column.
i have many rows in the invoice and cash tables.
My problem is to Group the SUMMED values of the TOTALSALES in the INVOICE and CASH tables BRAND wise.
I tried using left joins but the summation value always increases when there are more than 2 table in the join.
Any help will be highly appreciated.
You can use union all and then aggregate the results from the two tables together:
select p.brand, sum(invoice_sales) as invoice_sales, sum(cash_sales) as cash_sales
from ((select pid, totalsales as invoice_sales, 0 as cash_sales
from invoice i
) union all
(select pid, 0, totalsales
from cash c
)
) ic join
product p
on ic.pid = p.id
group by p.brand;
summarise the data in the Invoice and Cash tables separately
SELECT
pr.BRAND, (ISNULL(Inv.TOTALSALES, 0.00) + ISNULL(Csh.TOTALSALES, 0.00)) TotalSales
FROM Products pr
LEFT JOIN (
SELECT
PID, SUM(TOTALSALES) TOTALSALES
FROM Invoice GROUP BY PID
) Inv ON Inv.PID = pr.PID
LEFT JOIN (
SELECT
PID, SUM(TOTALSALES) TOTALSALES
FROM Cash GROUP BY PID
) Csh ON Csh.PID = pr.PID
ORDER BY pr.BRAND
You need two separate sums for the results of joining the tables by PID values and you will need to group the records by BRAND
select sum(Invoice.TOTALSALES) as invoice_sales, sum(Cash.TOTALSALES) as cash_sales
from Products
join Invoice
on Products.PID = Invoice.PID
join Cash
on Products.PID = Cash.PID
group by Invoice.PID, Products.BRAND;
If you do not need to group by products, then just omit Invoice.PID from the group by.
another way to do it is by using subquerys
select p.*,
(select sum(i.TOTALSALES) from Invoice i where i.PID = p.PID) as TotalSalesInvoice,
(select sum(c.TOTALSALES) from Cash c where c.PID = p.PID) as TotalSalesCash
from Products p
I am running a query which is counting the records on monthly basis from the table.
I am trying to add one extra column called "TotalPrice", I need a sum of all the prices from 'settle' table.
The problem I am facing is because of INNER JOIN, 'SUM' of the prices is adding up multiple prices due to duplicate records which the INNER JOIN is returning. Is there a way to avoid it and get a SUM of the prices from unique records ?
SELECT
CONCAT(year(datetime), '-', month(datetime)) AS YearMonth,
COUNT (DISTINCT a.id) AS TOTAL, SUM(total_price) AS TotalPrice
FROM settle AS a with (nolock)
INNER JOIN transfers b with (nolock) ON b.settleId = a.id
INNER JOIN Fdata AS c with (nolock) ON c.id= b.data
GROUP BY CONCAT(year(datetime), '-', month(datetime))
Thanks in advance.
sql server 2008 onwards:
with CTE as -- A CTE alows us to manipulate the data before we use it, like a derived table
(
select datetime, id, total_price,
row_number() over(partition by id, datetime order by total_price) as rn -- This creates a row number for each combo of id and datetime that appears
FROM settle AS a with (nolock)
INNER JOIN transfers b with (nolock) ON b.settleId = a.id
INNER JOIN Fdata AS c with (nolock) ON c.id= b.data
)
SELECT CONCAT(year(datetime), '-', month(datetime)) AS YearMonth,
COUNT (DISTINCT a.id) AS TOTAL,
SUM(total_price) AS TotalPrice
from CTE
where rn = 1 -- that row_number we created? This selects only the first one, removing duplicates
group by CONCAT(year(datetime), '-', month(datetime))
I have two tables in sql server and i wanna select and join some data from these table.the first tables have some customer like:
---------------
customer id
Dave 1
Tom 2
---------------
and second table i table of purchases that includes list of last purchases with cost and which customer bought that Product:
------------------
product date customer id
PC 1-1-2000 1
phone 2-3-2000 2
laptop 3-1-2000 1
------------------
i wanna select first table (customers info) with last date of their purchases!
i tried left join but that doesn't give me last purchases becuase customer id is not unique in second table! how can i do this function with SQL server query? Regards
If you just want the max date, use aggregation. I would recommend a left join for customers who have made no purchases:
select c.customer, c.id, max(p.date)
from customers c left join
purchases p
on c.id = p.customer_id
group by c.customer, c.id;
Use the not exists clause for the win!
select c.customer, p.*
from Customer as c
inner join Purchase as p
on p.customer_id = c.id
where not exists (
select 1
from Purchase as p2
where p2.customer_id = p.customer_id
and p2.date > p.date
)
I think you can use inner join and group by
select table1.customer, table1.id, table.max(date)
from table1
inner join table2 on table1.id = table2.id
group by table1.customer, table1.id
I am having a hard time constructing an sql query that gets all the associated data with respect to another (associated) table and loops over into that set of data on which are considered as latest (or most recent).
The image below describes my two tables (Inventory and Sales), the Inventory table contains all the item and the Sales table contains all the transaction records. The Inventory.Id is related to Sales.Inventory_Id. And the Wanted result is the output that I am trying to work on to.
My objective is to associate all the sales record with respect to inventory but only get the most recent transaction for each item.
Using a plain join (left, right or inner) doesn't produce the result that I am looking into for I don't know how to add another category in which you can filter the most recent data to join to. Is this doable or should I change my table schema?
Thanks.
You can use APPLY
Select Item,Sales.Price
From Inventory I
Cross Apply(Select top 1 Price
From Sales S
Where I.id = S.Inventory_Id
Order By Date Desc) as Sales
WITH Sales_Latest AS (
SELECT *,
MAX(Date) OVER(PARTITION BY Inventory_Id) Latest_Date
FROM Sales
)
SELECT i.Item, s.Price
FROM Inventory i
INNER JOIN Sales_Latest s ON (i.Id = s.Inventory_Id)
WHERE s.Date = s.Latest_Date
Think carefully about what results you expect if there are two prices in Sales for the same date.
I would just use a correlated subquery:
select Item, Price
from Inventory i
inner join Sales s
on i.id = s.Inventory_Id
and s.Date = (select max(Date) from Sales where Inventory_Id = i.id)
select * from
(
select i.name,
row_number() over (partition by i.id order by s.date desc) as rownum,
s.price,
s.date
from inventory i
left join sales s on i.id = s.inventory_id
) tmp
where rownum = 1
SQLFiddle demo