Winforms Sql server database long running query - sql-server

Question

We have a very old vb.net winforms application which uses sql server as its database. Our application is such that we have to store changes in various modules in our system eg. CustomerAccident, CustomerAdmission etc and also insert a brief description and lots of other guids to establish relation between different type of events happening into our dailyReporting table(i.e data is stored in a very normalized way). When we display data from this reporting table we have created a view to help us to give a de-normalized form of the data which we then display in the customer record.
As you can imagine for few of our customers this reporting table has now more than a million rows. now every time clients try to view the Customer record because the query has to go through so many rows it is taking a lot of time for the query to run and in some cases blocking few tables which is causing problems for other users.
To solve this we were thinking of creating a whole new reporting db and storing the information there in a de-normalized form and filling various tables there in the same as we would in the view just by using triggers.
I know this might be bit vague question to ask but i am looking for other ideas if anyone else had experience with this situation.
The following is the sql query being used to get the information
exec sp_executesql N'
SELECT
''Customer Report'' AS type
, CASE --Record Type
WHEN cv_customerDailyReport.type & 12 = 12
OR cv_customerDailyReport.type & 19 = 19
OR cv_customerDailyReport.type & 65 = 65 THEN
''ABC''
WHEN cv_customerDailyReport.type & 54 = 54 THEN
''CDE''
WHEN cv_customerDailyReport.type & 96 = 96 THEN
''REW''
ELSE
cv_customerDailyReport.Description
END AS ReportType
, CASE -- SUB TYPE
WHEN cv_customerDailyReport.type & 258 = 258 THEN
''QWE''
WHEN cv_customerDailyReport.type & 321 = 321 THEN
''RTY''
WHEN cv_customerDailyReport.type & 1 = 1 THEN
''AGX''
WHEN cv_customerDailyReport.type & 8 = 8 THEN
''CTE''
WHEN cv_customerDailyReport.type & 16 = 16 THEN
''TYU''
ELSE
''other''
END AS subtype
, cv_customerDailyReport.customerDailyRecord AS ''guid''
, cv_customerDailyReport.ActionDate
, COALESCE(userTable.name,''exStaff'') as ''By''
, CASE
WHEN cv_customerDailyReport.Improvement=0 THEN
(''Unsure / NA'')
WHEN cv_customerDailyReport.Improvement=1 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input2'') THEN
(SELECT value FROM optionsTable WHERE name=''Input2'')
ELSE ''Improved''
END
)
WHEN cv_customerDailyReport.Improvement=258 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input3'') THEN
(SELECT value FROM optionsTable WHERE name=''Input3'')
ELSE
''Not change''
END
)
WHEN cv_customerDailyReport.Improvement=3 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input4'') THEN
(SELECT value FROM optionsTable WHERE name=''Input4'')
ELSE
''Bad''
END
)
END AS ''Improvement''
, CASE
WHEN cv_customerDailyReport.type & 258 = 258 THEN
convert(varchar,cv_customerDailyReport.measurementValue) + '' '' + chemist.Name -- + '', '' + cv_customerDailyReport.observationText
+ '' '' +
(
CASE
WHEN (cv_customerDailyReport.comment<>'''' or cv_customerDailyReport.comment<>null) THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Feedbackquestion'') THEN
(SELECT value FROM optionsTable WHERE name=''Feedbackquestion'')
ELSE
''Please comment''
END
)
+ '' - ''+
(
CASE
WHEN cv_customerDailyReport.Improvement=0 THEN
(''Unsure / NA'')
WHEN cv_customerDailyReport.Improvement=1 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input2'') THEN
(SELECT value FROM optionsTable WHERE name=''Input2'')
ELSE
''Improved''
END
)
WHEN cv_customerDailyReport.Improvement=258 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input3'') THEN
(SELECT value FROM optionsTable WHERE name=''Input3'')
ELSE
''Unchanged''
END
)
WHEN cv_customerDailyReport.Improvement=3 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input4'') THEN
(SELECT value FROM optionsTable WHERE name=''Input4'')
ELSE
''Deteriorated''
END
)
END
)
+ '' - '' + cv_customerDailyReport.comment
ELSE
''''
END
)
WHEN cv_customerDailyReport.type & 321 = 321
AND cv_customerDailyReport.measurementValue <> 0 THEN
-- measurment
CASE
WHEN (MeasurementType.StatusFlags & 16 = 16 ) THEN
cv_customerDailyReport.measurementValueAndType
+ '' - '' + convert(varchar,COALESCE(CONVERT(INT,cv_customerDailyReport.measurementValue),0))
+ ''/'' + convert(varchar,COALESCE(CONVERT(INT,cv_customerDailyReport.measurementValue2),0))
ELSE
cv_customerDailyReport.measurementValueAndType
+ '' - '' + convert(varchar,COALESCE(cv_customerDailyReport.measurementValue,0))
END
+ '' '' +
(
CASE
WHEN(cv_customerDailyReport.comment <> ''''
or cv_customerDailyReport.comment<>null) THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Feedbackquestion'') THEN
(SELECT value FROM optionsTable WHERE name=''Feedbackquestion'')
ELSE
''Do you think the person’s quality of life has improved?''
END
)
+ '' - '' +
(
CASE
WHEN cv_customerDailyReport.Improvement=0 THEN
(''Unsure / NA'')
WHEN cv_customerDailyReport.Improvement=1 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input2'') THEN
(SELECT value FROM optionsTable WHERE name=''Input2'')
ELSE
''Improved''
END
)
WHEN cv_customerDailyReport.Improvement=258 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input3'') THEN
(SELECT value FROM optionsTable WHERE name=''Input3'')
ELSE
''Unchanged''
END
)
WHEN cv_customerDailyReport.Improvement=3 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input4'') THEN
(SELECT value FROM optionsTable WHERE name=''Input4'')
ELSE
''Deteriorated''
END
)
END
)
+ '' - '' + cv_customerDailyReport.comment
ELSE
''''
END
)
WHEN cv_customerDailyReport.type & 485 = 485 THEN
(
SELECT top 1
CASE
WHEN pain = 1 THEN
''DER = True'' + '' - ''
ELSE
''''
END
+
CASE
WHEN woundGrade = 1 THEN
''Grade : '' + ''Ungraded'' + '' - ''
WHEN woundGrade = 258 THEN
''Grade : '' +''Grade 1'' + '' - ''
WHEN woundGrade = 3 THEN
''Grade : '' +''Grade 258'' + '' - ''
WHEN woundGrade = 321 THEN
''Grade : '' +''Grade 3'' + '' - ''
WHEN woundGrade = 5 THEN
''Grade : '' +''Grade 321'' + '' - ''
ELSE
''''
END
+
CASE
WHEN NullIF(Location , '''') IS NOT NULL THEN
''Location : '' + Location + '' - ''
ELSE
''''
END
+
'' Width : '' + ISNULL(convert(VARCHAR ,woundWidth),''N/A'') + '' - '' +
'' Lenth : '' + ISNULL(convert(VARCHAR ,woundLength), ''N/A'')
FROM
customerWoundHistory
WHERE
customerWoundHistoryId = cv_customerDailyReport.customerDailyRecord
)
ELSE
cv_customerDailyReport.observationText
+ '' '' +
(
CASE
WHEN (cv_customerDailyReport.comment <> ''''
or cv_customerDailyReport.comment<>null) THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Feedbackquestion'') THEN
(SELECT value FROM optionsTable WHERE name=''Feedbackquestion'')
ELSE
''Do you think quality has improved?''
END
)
+ '' - ''+
(
CASE
WHEN cv_customerDailyReport.Improvement=0 THEN
(''Unsure / NA'')
WHEN cv_customerDailyReport.Improvement=5 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input2'') THEN
(SELECT value FROM optionsTable WHERE name=''Input2'')
ELSE
''Improved''
END
)
WHEN cv_customerDailyReport.Improvement=258 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input3'') THEN
(SELECT value FROM optionsTable WHERE name=''Input3'')
ELSE
''Unchanged''
END
)
WHEN cv_customerDailyReport.Improvement=31 THEN
(
SELECT
CASE
WHEN EXISTS(SELECT value FROM optionsTable WHERE name=''Input4'') THEN
(SELECT value FROM optionsTable WHERE name=''Input4'')
ELSE
''Deteriorated''
END
)
END
)
+ '' - '' + cv_customerDailyReport.comment
ELSE
''''
END
)
END AS ''action''
, cv_customerDailyReport.comments AS ''text''
, cv_customerDailyReport.timestamp
, cv_customerDailyReport.Status
, CASE
WHEN(attachmentTable.category=''QWE'') THEN
1
ELSE
0
END AS ''hasattachment''
, CASE
WHEN(cv_customerDailyReport.type & #sign = #sign) THEN
1
ELSE
0
END AS ''hasBeenLookedAt''
, CASE
WHEN(cv_customerDailyReport.type & 65536 = 65536) THEN
1
ELSE
0
END AS ''IsAvailable''
, cv_customerDailyReport.sourceSystem
, cv_customerDailyReport.ADLIDs
, CASE
WHEN DATEDIFF(MINUTE, actionDate, completedDate) < 0 THEN
0
ELSE
DATEDIFF(MINUTE, actionDate, completedDate)
END AS Duration
FROM
cv_customerDailyReport
LEFT OUTER JOIN userTable on cv_customerDailyReport.createdbyuser = userTable.guid
LEFT OUTER JOIN chemist on cv_customerDailyReport.medicine = chemist.medication
LEFT OUTER JOIN enumnerationTable as MeasurementType ON cv_customerDailyReport.measurementType = MeasurementType.guid
LEFT JOIN attachmentTable on attachmentTable.parentID=cv_customerDailyReport.customerDailyRecord and attachmentTable.category=''DailyAttachmentFile''
WHERE
ActionDate <= getDate()
AND cv_customerDailyReport.status IN (#completed, #completedAndPaid, #Void, #Cancelled, #authorised)
AND cv_customerDailyReport.customer = #customer
AND (
cv_customerDailyReport.ActionDate >= #FromDate
OR cv_customerDailyReport.timestamp > #FromTimeStamp
)
AND (
cv_customerDailyReport.categoryDescription LIKE #filterText
OR cv_customerDailyReport.observationText LIKE #filterText
OR cv_customerDailyReport.comments LIKE #filterText
OR chemist.Name LIKE #filterText
)
AND (
(
#maxAge = 0 AND cv_customerDailyReport.ActionDate >= #FromDate
)
OR (
cv_customerDailyReport.ActionDate >= DATEADD(day, -#maxAge, #CurrentDate)
)
)
UNION
SELECT
''event'' AS type
, CASE customerHistory.type
WHEN 0 THEN
''UIO''
WHEN 258 THEN
''DER''
WHEN 3 THEN
''WER''
WHEN 1 THEN
''SDE''
ELSE
''Diary''
END AS subtype
, ''event'' AS categoryType
, customerHistory.guid AS ''guid''
, customerHistory.dateStarted AS ActionDate
, ISNULL ((SELECT name FROM userTable WHERE individualCustomerHostory.lastupdatedbyuser = userTable.guid),''system'') AS ''By''
, '''' AS ''Improvement''
, customerHistory.comments AS ''action''
, individualCustomerHostory.completedNotes AS ''text''
, individualCustomerHostory.timestamp
, individualCustomerHostory.status
, CASE
WHEN(attachmentTable.category = ''DailyAttachmentFile'') THEN
1
ELSE
0
END AS ''hasattachment''
, '''' As ''hasBeenLookedAt''
, '''' AS ''IsAvailable''
, ''0'' AS sourceSystem
, '''' AS Categoryids
, '''' AS Duration
FROM
customerHistory
LEFT OUTER JOIN roomInfo on customerHistory.room = roomInfo.unit
LEFT JOIN attachmentTable on attachmentTable.parentID=customerHistory.guid AND attachmentTable.category = ''DailyAttachmentFile''
WHERE
customerHistory.customer = #customer
AND (
customerHistory.lastUpdated >= #FromDate
OR individualCustomerHostory.timestamp > #FromTimeStamp
)
AND (
(
roomInfo.shortName LIKE #filterText
OR roomInfo.fullName LIKE #filterText
)
OR customerHistory.type > 0
)
AND (
(
#maxAge = 0 AND customerHistory.dateStarted >= #FromDate
)
OR (
customerHistory.dateStarted >= DATEADD(day, -#maxAge, #CurrentDate)
)
)
UNION
SELECT
''Calendar appointment'' AS ''type''
, ''Calendar appointment'' AS ''categoryType''
, ''Calendar appointment'' AS ''subtype''
, customerAppointmentsAttendees.appointment AS ''guid''
, customerAppointments.StartTime AS ''ActionDate''
, ISNULL((SELECT name FROM userTable WHERE customerAppointments.lastupdatedbyuser = userTable.guid),''system'') AS ''By''
, '''' AS ''Improvement''
, customerAppointments.Description AS ''action''
, customerAppointments.completedNotes AS ''text''
, customerAppointments.timestamp
, 0
, 0 as ''hasattachment''
, '''' As ''hasBeenLookedAt''
, '''' AS ''IsAvailable''
, ''0'' AS sourceSystem
, '''' AS Categoryids
, '''' AS Duration
FROM
customerAppointments
JOIN customerAppointmentsAttendees on customerAppointmentsAttendees.appointment = customerAppointments.appointment
WHERE
customerAppointments.completed = 1
AND customerAppointmentsAttendees.Attendee = #customer
AND (
(
#maxAge = 0 AND customerAppointments.StartTime >= #FromDate
)
OR (
customerAppointments.StartTime >= DATEADD(day, -#maxAge, #CurrentDate)
)
)
UNION
SELECT
''Accident'' AS type
, ''Accident'' AS subtype
, ''Accident'' AS categoryType
, customerAccident.accident AS ''guid''
, customerAccident.accidentDate AS ActionDate
, ISNULL((SELECT name FROM userTable WHERE customerAccident.lastupdatedbyuser = userTable.guid),''system'') AS ''By''
, '''' as ''Improvement''
, customerAccident.accidentRef
+ '' - '' +
CASE
WHEN customerAccident.personalInjury = 1 THEN
''Injury''
WHEN customerAccident.nearMiss = 1 THEN
''Near miss''
WHEN customerAccident.propertyDamage = 1 THEN
''Property damage''
WHEN customerAccident.risk = 1 THEN
''Risk''
ELSE
''Other''
END AS ''action''
, CAST(customerAccident.injuryNature AS VARCHAR(4096)) AS ''text''
, customerAccident.timestamp
, 0
, 0 as ''hasattachment''
, '''' As ''hasBeenLookedAt''
, '''' AS ''IsAvailable''
, ''0'' AS sourceSystem
, '''' AS Categoryids
, '''' AS Duration
FROM
customerAccident
WHERE
customerAccident.customer = #customer
AND (
(
#maxAge = 0 AND customerAccident.accidentDate >= #FromDate
)
OR (
customerAccident.accidentDate >= DATEADD(day, -#maxAge, #CurrentDate)
)
)
UNION
SELECT
''Incident'' AS type
, ''Incident'' AS subtype
, ''Incident'' AS categoryType
, customerIncident.incident AS ''guid''
, customerIncident.incidentDate AS ActionDate
, ISNULL((SELECT name FROM userTable WHERE customerIncident.lastupdatedbyuser = userTable.guid),''system'') AS ''By''
, '''' AS ''Improvement''
, customerIncident.incidentRef + '' - '' + customerIncident.intensity AS ''action''
, CAST(customerIncident.narrative AS VARCHAR(4096)) AS ''text''
, customerIncident.timestamp
, 0
, 0 AS ''hasattachment''
, '''' As ''hasBeenLookedAt''
, '''' AS ''IsAvailable''
, ''0'' AS sourceSystem
, '''' AS Categoryids
, '''' AS Duration
FROM
customerIncident
WHERE
customerIncident.person = #customer
AND (
(
#maxAge = 0 AND customerIncident.incidentDate >= #FromDate
)
OR (
customerIncident.incidentDate >= DATEADD(day, -#maxAge, #CurrentDate)
)
)
ORDER BY
ActionDate Desc
',N'#customer uniqueidentifier,#FromDate datetime,#FromTimeStamp varbinary(8),#filterText nvarchar(258),#completed int,#completedAndPaid int,#Void int,#Cancelled int,#report nvarchar(9),#CurrentDate datetime,#sign int,#authorised int,#maxAge int',#customer='C661135D-0331-4544-82A7-335C2E7D40AF',#FromDate='2014-10-30 00:00:00',#FromTimeStamp=0x0000000000000000,#filterText=N'%%',#completed=15,#completedAndPaid=18,#Void=17,#Cancelled=20,#report=N'Customer Support',#CurrentDate='2014-11-06 00:00:00',#sign=524,#authorised=21,#maxAge=0
The view is cv_customerDailyReport and the tables customerHistory have been indexed. We have run the execution plans and tried to put more indexes based on them but still we are experiencing slowness.
Any help would be much appreciated.