I need to extract some data to analyse exceptions/logs, and I'm stuck at a point.
I have a table with a column called CallType, and a status which can be Success or Failure. This table also has a column called SessionId.
I need to do this:
Select all the SessionId's where all the CallType = 'A' are marked as Success, but there is at least one CallType = 'B' having a Failure for that session.
There will be a where clause to filter out some stuff.
I'm thinking something like:
select top 10 *
from Log nolock
where ProviderId=48 -- add more conditions here
group by SessionId
having --? what should go over here?
I would do this with conditional aggregation in the having clause:
select top 10 *
from Log nolock
where ProviderId=48 -- add more conditions here
group by SessionId
having sum(case when CallType = 'A' and Status = 'Failure' then 1 else 0 end) = 0 and
sum(case when CallType = 'B' and Status = 'Failure' then 1 else 0 end) > 0 and
sum(case when CallType = 'A' and Status = 'Success' then 1 else 0 end) > 0;
The having clause checks for three conditions by counting the number of rows that meet each one. If = 0, then no records are allowed. If > 0 then records are required.
That CallType A has no failures.
That CallType B has at least one failure.
That at least one CallType A success exists.
The third condition is ambiguous -- if is not clear if you actually need CallType As to be in the data, based on the question.
SELECT *
FROM Log L WITH(NOLOCK)
WHERE L.CallType='A'
AND L.[Status] = 'Success'
AND L.ProviderId = 48
AND EXISTS (SELECT 1
FROM Log
WHERE L.SessionID = SessionID
AND CallType='B'
AND [Status] = 'Failure')
Having clause can only operate on aggregates within the group so this isn't the correct way to go about it since you are filtering out other rows you want to check against. I'd use EXISTS for this e.g.
edit: corrected the query
SELECT *
FROM Log L WITH(NOLOCK)
WHERE ProviderId = 48
AND CallType = 'A'
AND Status = 'Success'
AND EXISTS(SELECT * FROM Log WHERE L.SessionId = SessionId AND CallType = 'B' AND Status = 'Failure')
You can essentially filter out rows in the EXISTS part of the query using the aliased Log table (aliased L), matching all rows with the same session ID and seeing if any match the filters you required (failed with call type B)
Related
I am writing a sql where I am trying to pull out information of the status of the courses the user has enrolled. I am trying to return single record for each user. Two fields in the select list would derive the value in the following manner
CourseResultStatusId -
If the status of all the courses is passed then return the status as passed otherwise.
If any status is fail, the overall status is fail.
If any of the status is expired, then overall status is expired.
If any of the status is in-progress then overall status is in-progress
ExpiryDateTime - Training expiring (nearest date)
I need to apply the following logic on courses he has been assigned.
cr.ExpiryDateTime > GetDate() and cr.ExpiryDateTime <= dateadd(dd,30,getdate()) )
If you see below , the query I have written so far pulls the courses that each user has been enrolled but it is not a cumulative result. Do I need to group, if yes would need help.
DECLARE #Rep1 INT;
SET #Rep1 = 13119;
SELECT
cr.[CourseID]
,cr.[UserID]
,u.[Code]
,u.[DisplayName]
,t.[Name]
,cr.[CourseResultStatusID] AS [CourseResultStatusID]
,crs.[Description] AS [CourseResultStatusDescription]
,c.[PointsRequired]
,cr.[ExpiryDateTime]
FROM [training].[CourseResult] cr
INNER JOIN [training].[Course] c
ON cr.[CourseID] = c.[ID] and c.[IsOptional] = 0 -- and cr.ExpiryDateTime > GetDate() and cr.ExpiryDateTime <= dateadd(dd,30,getdate())
INNER JOIN [training].[CourseResultStatus] crs
ON cr.[CourseResultStatusID] = crs.[ID]
INNER JOIN org.RepresentativeTierHistory rth on rth.RepresentativeID = cr.[UserID] and GetDate() between rth.StartDate and rth.EndDate
INNER JOIN org.tier t on t.ID = rth.TierID
LEFT JOIN [org].[User] u
ON u.[ID] = cr.[UserID]
WHERE cr.[UserID] IN (
SELECT hd.DescendantId FROM org.HierarchyDescendant hd WHERE hd.RepresentativeId = #Rep1 UNION ALL SELECT #Rep1 -- for management exchange info
)
order by UserID
The result of the query is as follows. I have circled to show you records that belong to a particular user and the columns that I am interested in . I need help in getting single record for each user based on the of logic that I mentioned above.
If I followed you correctly, you can implement the priorization rules on the overall result of each user using conditional aggregation.
Starting from your existing query, the logic would be:
select
cr.[UserID],
case
when min(case when crs.[Description] = 'Complete' then 1 else 0 end) = 1
then 'Complete'
when max(case when crs.[Description] = 'Fail' then 1 else 0 end) = 1
then 'Fail'
when max(case when crs.[Description] = 'Expired' then 1 else 0 end) = 1
then 'Expired'
when max(case when crs.[Description] = 'In Progress' then 1 else 0 end) = 1
then 'In Progress'
end as ResultStatus
from ...
where ...
group by cr.[UserID]
As for the date filtering logic, you should be able to implement it directly in the where clause.
It is possible that other parts of your query can be optimized - you might want to ask a new question for this, providing proper sample data and desired results.
My requirement is to get id for missing status from SQL table. I will get a list of status for each id, say A,B,C,D. In a scenario, I have to check status B exists or not. Table gets updated everyday and each time new Id will be created
Conditions,
If status A exists and other statuses such as C and D does not
exists, then don't need to get id.
If status A and B exists and other statuses such as C or D does not exists, then don't need to get id .
If status A exists and B not exists, other
statuses such as C or D exists, then I should get the id of that
record
If status A and B exists, other
statuses such as C or D exists (all status exists), then I don't need to get the id of that
record
Table1:
Id StatusCode
1 A
1 C
2 A
2 B
2 C
3 A
3 C
3 D
How do I get Id 1 and 3 using SQL query?, Seems simple but as I am new to SQL I could not able to get it in SQL.
select statement in this screenshot works fine when there is only one id, it fails on multiple id. I tried many other way, but no use
Try this
SELECT DISTINCT ID
FROM T1
WHERE Statuscode = 'A' AND ID NOT IN (SELECT ID FROM T1 WHERE Statuscode = 'B' )
AND (ID IN (SELECT ID FROM T1 WHERE Statuscode = 'C' ) OR ID IN (SELECT ID FROM T1 WHERE Statuscode = 'D' ))
FIDDLE DEMO
Also, To correct Gordon Linoff's answer, we need to add one more where criteria there
SELECT Id
FROM T1
GROUP BY Id
HAVING SUM(CASE WHEN Statuscode = 'A' THEN 1 ELSE 0 END) > 0 AND
SUM(CASE WHEN Statuscode = 'B' THEN 1 ELSE 0 END) = 0 AND
SUM(CASE WHEN Statuscode IN ('C', 'D') THEN 1 ELSE 0 END) > 0;
FIDDLE DEMO
This answers the original version of the question.
I think you can use aggregation:
select id
from t
group by id
having sum(case when status = 'A' then 1 else 0 end) > 0 and
sum(case when status in ('C', 'D') then 1 else 0 end) > 0;
SELECT id
FROM t
GROUP BY
Id
HAVING MAX(status) = CHAR(64 + COUNT(*))
--char(64+1) = A, char(64+2) = B etc
The logic behind this is that it will take all count the same types of id. So if you have 3 rows you will need abc. If you have an id with 4 rows you will have ABCD. Generally the max status should always be the same as the number of rows.
This is true of course if you have no duplicate between id and status code.
select distinct id from t where t.statuscode = 'C' or t.statuscode = 'D' group by t.id
I have a table with example data like below:
InquiryId status
-------------------
inquiry1 New
inquiry1 Started
inquiry1 Done
inquiry2 New
inquiry2 Pending
inquiry3 New
inquiry3 Started
inquiry4 New
inquiry4 Cancelled
..and so on
Each inquiry starts with status as New and can reach either of the end status'es (Done, Cancelled..) via the middle status'es (Started, Pending..)
The question is how do find the list of inquiries that started with New but never reached the end status, i.e. what SQL query needs to be written to get the list of uncompleted inquiries.
P.S: Using Sybase Database
You can user the following query:
select distinct InquiryId
from <table_name>
where status not in('Done','Cancelled');
It will return all all the InquiryId which doesn't have the status as Done or Cancelled and is still in intermediate state.
You can use not exists :
select t.*
from table t
where status = 'New' and
not exists (select 1
from table t1
where t1.InquiryId = t.InquiryId and
t1.status in ('Done', 'Cancelled')
);
I would use aggregation:
select inquiryId
from t
group by inquiryId
having sum(case when status = 'New' then 1 else 0 end) > 0 and
sum(case when status in ('Done', 'Cancelled') then 1 else 0 end) = 0;
The conditions in the having clause count the number of rows for each inquiryId that meet the given conditions. The > 0 says that the inquiryId has at least one row. The = 0 says that the inquiryId has more than one row.
Here is a sample table I have
Logs
user_id, session_id, search_query, action
1, 100, dog, A
1, 100, dog, B
2, 101, cat, A
3, 102, ball, A
3, 102, ball, B
3, 102, kite, A
4, 103, ball, A
5, 104, cat, A
where
miss = for the same user_id and same session id , if action A is not followed by action B its termed a miss.
Note: action B can happen only after action A has happened.
I am able to find the count of misses for each unique search_query across all users and sessions.
SELECT l1.search_query, count(l1.*) as misses
FROM logs l1
WHERE NOT EXISTS
(SELECT NULL FROM logs l2
WHERE l1.user_id = l2.user_id
AND l1.session_id = l2.session_id
AND l1.session_id != ''
AND l2.action = 'B'
AND l1.action = 'A')
AND l1.action='A'
AND l1.search_query != ''
GROUP BY v1.search_query
order by misses desc;
I am trying to find the value of miss_percentage=(number of misses/total number of rows)*100 for each unique search_query. I couldn't figure out how to find the count with a condition and count without that condition in the same query. Any help would be great.
expected output:
cat 100
kite 100
ball 50
One way to do it is to move the EXISTS into the count
SELECT l1.search_query, count(case when NOT EXISTS
(SELECT 1 FROM logs l2
WHERE l1.user_id = l2.user_id
AND l1.session_id = l2.session_id
AND l1.search_query = l2.search_query
AND l2.action = 'B'
AND l1.action = 'A') then 1 else null end
)*100.0/count(*) as misses
FROM logs l1
WHERE l1.action='A'
AND l1.search_query != ''
GROUP BY l1.search_query
order by misses desc;
This produces the desired results, but also zeros if no misses were found. This can be removed with a HAVING clause, or postprocessing.
Note I also added the clause l1.search_query = l2.search_query that was missing, since otherwise it was counting kite as succeeded, since there is a row with B in the same session.
I think you just need to use case statements here. If I have understood your problem correctly .. then the solution would be something like this -
WITH summary
AS (
SELECT user_id
,session_id
,search_query
,count(1) AS total_views
,sum(CASE
WHEN action = 'A'
THEN 1
ELSE 0
END) AS action_a
,sum(CASE
WHEN action = 'B'
THEN 1
ELSE 0
END) AS action_b
FROM logs l
GROUP BY user_id
,session_id
,search_query
)
SELECT search_query
,(sum(action_a - action_b) / sum(action_a)) * 100 AS miss_percentage
FROM summary
GROUP BY search_query;
You can allways create two queries, and combine them into one with a join. Then you can do the calculations in the bridging (or joining) SQL statement.
In MS-SQL compatible SQL this would be:
SELECT ActiontypeA,countedA,isNull(countedB,0) as countedB,
(countedA-isNull(countedB,0))*100/CountedA as missed
FROM (SELECT search_query as actionTypeA, count(*) as countedA
FROM logs WHERE Action='A' GROUP BY actionType
) as TpA
LEFT JOIN
(SELECT search_query as actionTypeB, count(*) as countedB
FROM logs WHERE Action='B' GROUP BY actionType
) as TpB
ON TpA.ActionTypeA = TpB.ActiontypeB
The LEFT JOIN is required to select all activities (search_query) from the 'A' results, and join them to only those from the 'B' results where a B is available.
Since this is very basic SQL (and well optimized by SQL engines) I'd suggest to prevent WHERE EXISTS as much as possible. The IsNull() function is an MS-SQL function to force a NULL value into the int(0) value which can be used in a calculation.
Finally you could filter on
WHERE missed>0
to get the final result.
Here is a simple database representation of what I'm stuck on:
IDNumber TimeSpent Completed
1 0 No
1 0 No
1 2 No
2 0 No
3 0 No
I'm currently querying the database as such...
"SELECT Distinct (IDNumber) AS Info FROM TestTable
ORDER BY WorkOrderNumber";
And it gives me back the results
1
2
3
Which is expected.
Now, I'd like to adjust it to where any instance of an IDNumber that have TimeSpent != 0 or Completed != No means that the IDNumber isn't grabbed at all. So for example in the database given, since TimeSpent = 2, I don't want IDNumber 1 to be returned in my query at all.
My first instinct was to jump to something like this...
"SELECT Distinct (IDNumber) AS Info FROM TestTable
WHERE TimeSpent='0' AND Completed='No'
ORDER BY WorkOrderNumber";
But obviously that wouldn't work. It would correctly ignore one of the IDNumber 1's but since two others still satisfy the WHERE clause it would still return 1.
Any pointers here?
SELECT DISTINCT IDNumber
FROM TestTable
WHERE IDNumber NOT IN
(SELECT IDNUmber FROM TestTable WHERE TimeSPent <> 0 OR Completed <> 'No')
You can do this with an aggregation, using a having clause:
select IDNumber
from TestTable
group by IDNumber
having sum(case when TimeSpent = 0 then 1 else 0 end) = 0 and
sum(case when Completed = 'No' then 1 else 0 end) = 0
The having clause is counting the number of rows that meet each condition. The = 0 is simply saying that there are no matches.
I prefer the aggregation method because it is more flexible in terms of the conditions that you can set on the groups.