March 4, 2015 at 11:14 pm
Hi all,
Can you please help what is wrong with my query, I try to take the value from row 1 divided by the value from row 2 but it is not working, here is the following:
Here is my table called Trans
ID Period Sales Profit
1 Current 20 5
2 Previous 40 20
I want to take 20 divided by 40(20/40), 5 divided by 20(5/20)
Here is the result I want:
ID Period Sales Sales_Per Profit Profit_Per
1 Current 20 50% 5 25%
2 Previous 40 50% 20 25%
Here is my query:
Select
(t1.Sales/NULLIF(t2.Sales,0) * 100) as Sales_Per
From Trans t1
INNER JOIN Trans t2
on t1.Id = t2.ID - 1
Please give me some ideas. Thanks so much for all your help!
March 5, 2015 at 7:12 am
trishdiep (3/4/2015)
Hi all,Can you please help what is wrong with my query, I try to take the value from row 1 divided by the value from row 2 but it is not working, here is the following:
Here is my table called Trans
ID Period Sales Profit
1 Current 20 5
2 Previous 40 20
I want to take 20 divided by 40(20/40), 5 divided by 20(5/20)
Here is the result I want:
ID Period Sales Sales_Per Profit Profit_Per
1 Current 20 50% 5 25%
2 Previous 40 50% 20 25%
Here is my query:
Select
(t1.Sales/NULLIF(t2.Sales,0) * 100) as Sales_Per
From Trans t1
INNER JOIN Trans t2
on t1.Id = t2.ID - 1
Please give me some ideas. Thanks so much for all your help!
I don't think your join condition is quite right here. For row 2 you would get whatever is in Transaction 3. Also, this code assumes you have no gaps at all in your rows which is highly unlikely. You probably need to add another predicate in your join condition.
In order to help we will need a few things:
1. Sample DDL in the form of CREATE TABLE statements
2. Sample data in the form of INSERT INTO statements
3. Expected results based on the sample data
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March 12, 2015 at 8:31 pm
Thank you for your reply Sean.
I tried my code again, the query is right, however I need to convert the columns to float and I got the right % that I wanted.
Thanks!
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