I've been trying to optimize one of my more bulky db views.
Presently, I'm just using sub-selects 5 times to get the count of the company ID's.
(Select count(id) from company table where prospecting.stage = 'qualify') as Qualify,
(Select count(id) from company table where prospecting.stage = 'targetted') as Targetted,
Each company goes through 5 stages, I simply want to count the amount of companies in each stage by company location in separate columns.
I'm trying to do this in one select, but I am getting a bit stuck.
SUM(COUNT(CASE WHEN prospecting.stage = 'Qualify' THEN '1' ELSE '0' END)) as [Qualified]
SUM(COUNT(CASE WHEN prospecting.stage = 'Targetted' THEN '1' ELSE '0' END)) as [Targetted]
So it ends up looking something along these lines:
Location | Stage: Qualify | Stage: Targetted | Stage 3 | Stage 4 | Stage 5 | Total
Cannot perform an aggregate function on an expression containing an aggregate or a subquery. -Makes sense.
So I need to count the Company.ID where the prospecting.stage = 'XYZ' into separate rows per stage.
Any advice? :(
Drop the count function and change the datatype from char to int in the case expressions. Your expressions should look like this:
SUM(CASE WHEN prospecting.stage = 'Qualify' THEN 1 ELSE 0 END) as [Qualified]
Related
I have 2 tables first is
Thread { code, itr_global,campaign, contact, start_time,duration}
segment {code,thread,start_time,duration,state}
There are multiple other joins but these 2 are major joins. 2 table are realted as thread.code=segment.thread.
In segment table there will be multiple rows for singl thread. I need to get values
campaign start_time duration waititme talk_time hold_time wrap_time
Where wait_time I can get as segment.state=7 & talke_time=segment.state=6 & wrap time as segment.state=8
I am not able to get all these values in single row as it will give me 3 diffrent rows for each record. How can I get all the values in single row as per above format.
You need some conditional aggregation SUM(CASE...) to get the result you want.
All this is based on my guesses about the structure and meaning of your tables, which you omitted from your question.
SELECT thread.code, thread.campaign,
SUM(segment.duration) duration,
SUM(CASE WHEN segment.state = 7 THEN segment.duration END) waittime,
SUM(CASE WHEN segment.state = 6 THEN segment.duration END) talk_time,
SUM(CASE WHEN segment.state = 8 THEN segment.duration END) wrap_time,
42 hold_time, -- you didn't say how to get hold_time
SUM(CASE WHEN segment.state = 8 THEN segment.duration END) wrap_time
FROM Thread
LEFT JOIN segment ON Thread.code = segment.thread
GROUP BY thread.code, thread.campaign
Is there a way to combine these two queries into a single query - just one trip to the database?
Both queries hit the same table, but the first is looking for Total Active Circuits, while the second is looking for Total Circuits.
I am hoping to display results like this...
4/15, 12/34, 2/21 (where the first number is ActiveCircuits and the second number is TotalCircuits)
SELECT COUNT(CircuitID) AS ActiveCircuits
FROM Circuit
WHERE StateID = 5
AND Active = 1
SELECT COUNT(CircuitID) AS TotalCircuits
FROM Circuit
WHERE StateID = 5
Use conditional aggregation:
SELECT COUNT(*) AS TotalCircuits,
SUM(CASE WHEN Active = 1 THEN 1 ELSE 0 END) as ActiveCircuits
FROM Circuit
WHERE StateID = 5;
This assumes that CircuitId is never NULL, which seems quite reasonable in a table called Circuit.
You can use case when to have a 1 wherever it's active and then take the sum to get the total # of 1's or activecircuits.
SELECT COUNT(CIRCUITID) AS TOTALCIRCUITS,
SUM(CASE WHEN ACTIVE = 1 THEN 1 ELSE 0 END) AS ACTIVECIRCUITS
FROM CIRCUIT
WHERE STATEID = 5
I'm looking to generate a query that pulls from several tables. Most are rather straightforward and I can pull a value from a table directly but there is one table that is pivoted so that the value I want depends on the value in another column.
The table looks like the below:
ID Condition Value
1 Stage1 6
2 Stage2 9
3 Stage3 5
4 Stage4 2
So I'm looking to write a query that essentially "qualifies" the value I want by telling the table which condition.
An example of my SQL:
Select Attribute1, Stage1Value, Stage2Value, Stage3Value
From attribute, stage
where attribute = project1
So I can't just pull the "Value" column as it needs to know which stage in the query.
There are 30 columns I am trying to pull - of which 13 fall into this category. Thanks for any help you can provide.
So, you want conditional aggregation something :
select a.<col>,
sum(case when s.Condition = 'Stage1' then s.value else 0 end),
. . .
sum(case when s.Condition = 'Stage4' then s.value else 0 end)
from attribute a inner join
stage s
on s.<col> = a.<col>
group by a.<col>
I'm doing a query to obtain the numbers of people for a Christmas dinner.
The people include the workers and their relatives. The relatives are stored in a different table.
Children and adults eat a different menu and we organize tables by families.
I'm already using this query
select worker_name,
count(*) as total_per_family,
SUM(CASE WHEN age < 18 THEN 1 ELSE 0 END) as children,
SUM(CASE WHEN age >= 18 THEN 1 ELSE 0 END) as adults
from
(
/*subquery*/
)
group by worker_name
order by worker_name;
This query returns the number of child and adults related to the worker and count gives me the total.
The problem is that I need to add the worker to the adults sum.
Is there a way to modify adults? Either setting its initial value to 1 or adding 1 after the sum is done but before the count is obtained.
Modifying your query to read
SUM(CASE WHEN AGE>=18 THEN 1 ELSE 0 END) + 1 as adults
would probably be a first approach. The aggregate SUM() would be computed first, with 1 added thereafter as your initial suggestion indicated.
I'm trying create a query that will output a total number, as well as a subset of the total number in SQL-Server. I can think of a way to do this via subqueries, but that seems like a ton of work. Is there a faster way to write this query?
Table name: orders
OrderID Date Type OrderSize
1 1/1/2012 Electronics $282.02
2 1/1/2012 Electronics $1,000.56
3 1/1/2012 Books $17.25
4 1/1/2012 Books $10.00
What I am trying to output would look like this:
Date ElectronicOrders ElectronicOrderSize BookOrders BookOrderSize
1/1/2012 2 $1,282.58 2 $27.25
I could create a temp table, then run 2 update queries - 1 WHERE Type = 'Electronics' and 1 WHERE Type = 'Books'.
What I have seen in some programming languages, such as R, is the ability to subset a variable. Is there a way for me to say something like:
count(OrderID, Type = 'Electronics) as ElectronicOrders, sum(OrderSize, Type = 'Electronics') as ElectronicOrderSize
Or am I stuck with subqueries and UPDATE queries?
I haven't ever gotten the new PIVOT syntax to make sense in my head but you can do a pivot table by grouping, and taking aggregate functions in a case statement.
select [date], sum( case when type = 'Electronics' then (ordersize) else 0 end) AS ElectronicsSum,
sum( case when type = 'Electronics' then 1 else 0 end) AS ElectronicsCount,
sum( case when type = 'Books' then (ordersize) else 0 end) AS BooksSum,
sum( case when type = 'Books' then 1 else 0 end) AS BooksCoumt
from orders
group by [date]
I put a fiddle thing up to test it out. If Aaron B. posts up a solution, give him the answer credit, I might not have even recognized the pivotyness of it.