[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

Help with case statement

Posted on 2008-10-14
20
Medium Priority
?
189 Views
Last Modified: 2012-05-05
I'm sure there are many ways to skin a cat and probably many ways to do what I'm trying to do in the SQL below.

Can someone show me an easier, FASTER, way to do this?
This will be part of a larger SP returning ptEncounter records based on criteria passed to the SP. I am open to using temp tables or variables to store then return the results.

Essentially, I will be providing indicators in the UI based on the values returned in the DictationState column
returned from the stored procedure based on this criteria:

"        Green  An entry in ptDictation for that MRN/DOS with a status of approved.
"        Grey   ptSchedule records linked to that Encounter do contain an OV, but these is no entry in ptDictation
          for that MRN/DOS or if there is an entry where the status is not approved.
"        White  ptSchedule records linked to that Encounter do not contain an OV.

an OV is same as having ptSchedule.ApptTypeID = 5
DOS = DateOfService

I have 2 ptEncounter records that meet the criteria of MRN = '5079' and DateOfService = '07/5/2004'
I have 2 ptSchedule records that meet the criteria of MRN = '5079' and StartDtTm = '07/5/2004'
I have 9 ptDictation records that meet the criteria of MRN = '5079' and DOS = '07/5/2004'
I should only have two values returned.

Schemas below.

select CASE
       WHEN EXISTS (SELECT d.MRN FROM ptDictation d 
                    INNER JOIN ptEncounter ee 
                        ON ee.MRN = d.MRN AND d.DOS = e.DateOfService 
                    WHERE d.Status = 'Approved')          THEN 2
       WHEN EXISTS (SELECT s.MRN FROM ptSchedule s 
                    INNER JOIN ptEncounter eee 
                        ON eee.MRN = s.MRN 
                        AND CONVERT(varchar,s.StartDtTm, 10) = CONVERT(varchar,e.DateofService, 10)
                    WHERE s.ApptTypeID = 5) THEN 1
       ELSE 0
       END as DictationState
FROM ptEncounter e
WHERE e.MRN = '5079' 
AND   e.DateOfService = '07/5/2004'
 
----------------- Schemas -----------------
CREATE TABLE [dbo].[ptEncounter](
        [EncounterID] [int] IDENTITY(1,1) NOT NULL,
        [BillNumber] [int] NOT NULL,
        [ClaimNumber] [nvarchar](20) NULL,
        [LatestRec] [bit] NOT NULL,
        [MRN] [varchar](25) NULL,
        [SubscriberContactID] [int] NULL,
        [LocationID] [int] NULL,
        [AuthID] [int] NULL,
        [BillerUserID] [int] NULL,
        [PostingDtTm] [datetime] NULL,
        [SiteID] [int] NULL,
        [DeptID] [int] NULL,
        [InsuranceID] [int] NULL,
        [RefPhysID] [int] NULL,
        [ProviderID] [int] NULL,
        [DateOfService] [datetime] NULL,
        [DateOfIllness] [datetime] NULL,
        [TotalAmt] [decimal](18, 2) NULL,
        [PaidAmt] [decimal](18, 2) NULL,
        [OpenAmt] [decimal](18, 2) NULL,
        [PaidInFull] [bit] NULL,
        [ClaimSubmissionDtTm] [datetime] NULL,
        [ClaimStatus] [int] NULL,
        [Diag1] [nvarchar](10) NULL,
        [Diag2] [nvarchar](10) NULL,
        [Diag3] [nvarchar](10) NULL,
        [Diag4] [nvarchar](10) NULL,
        [StatementMessage1] [nvarchar](500) NULL,
        [StatementMessage2] [nvarchar](500) NULL,
        [BillComment1] [nvarchar](500) NULL,
        [BillComment2] [nvarchar](500) NULL,
        [AdmitDtTm] [datetime] NULL,
        [DischargeDtTm] [datetime] NULL,
        [AutoAccidentRelated] [bit] NULL,
        [EmploymentAccidentRelated] [bit] NULL,
        [OtherAccidentRelated] [bit] NULL,
        [State] [nvarchar](2) NULL,
        [PreAuthNumber] [nvarchar](50) NULL,
        [CreatedByUserID] [int] NULL,
        [CreatedDtTm] [datetime] NULL,
        [ModifiedByUserID] [int] NULL,
        [ModifiedDtTm] [datetime] NULL,
        [DeletedByUserID] [int] NULL,
        [DeletedDtTm] [datetime] NULL,
        [FirstOnsetDtTm] [datetime] NULL,
        [AcceptAssignment] [bit] NULL,
        [Errors] [varchar](max) NULL,
        [BucketID] [int] NULL,
)
 
CREATE TABLE [dbo].[ptDictation](
        [ID] [int] IDENTITY(1,1) NOT NULL,
        [MRN] [varchar](25) NOT NULL,
        [DOS] [datetime] NULL,
        [DocumentNum] [int] NULL,
        [SectionTitle] [nvarchar](50) NULL,
        [SectionOrder] [decimal](10, 2) NULL,
        [Status] [varchar](50) NULL,
        [Doctor] [varchar](50) NULL,
        [SystemTime] [timestamp] NULL,
        [Text] [varchar](7800) NULL,
        [UserID] [char](10) NULL,
        [Deleted] [int] NULL,
        [DeletedBy] [char](10) NULL,
        [DeletedDate] [datetime] NULL,
        [Signed] [char](10) NULL,
        [Printed] [int] NULL,
        [DictationDoc] [nvarchar](30) NULL,
        [OrgDocNum] [int] NULL,
        [TimeStamp] [datetime] NULL,
        [PrintedDate] [datetime] NULL,
        [Location] [varchar](40) NULL,
)
 
CREATE TABLE [dbo].[ptSchedule](
        [ScheduleId] [int] IDENTITY(1,1) NOT NULL,
        [MRN] [varchar](25) NULL,
        [ApptTypeID] [int] NULL,
        [ResourceId] [int] NULL,
        [StartDtTm] [datetime] NULL,
        [EndDtTm] [datetime] NULL,
        [Description] [nvarchar](1000) NULL,
        [Notes] [nvarchar](100) NULL,
        [Status] [int] NULL,
        [CheckedInDtTm] [datetime] NULL,
        [CheckedOutDtTm] [datetime] NULL,
        [Flow] [nvarchar](50) NULL,
        [ModifiedDtTm] [datetime] NULL,
        [ModifiedByUserID] [int] NULL,
        [WaitList] [int] NULL,
        [ApptBlockID] [int] NULL,
        [temp] [nvarchar](1000) NULL,
        [EncounterID] [int] NULL,
)

Open in new window

0
Comment
Question by:EddieShipman
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 9
  • 9
20 Comments
 
LVL 60

Expert Comment

by:chapmandew
ID: 22711640
Does this return 2 records?

SELECT *
FROM ptEncounter e
WHERE e.MRN = '5079'
AND   e.DateOfService = '07/5/2004'

My guess is that it does not.
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22711671
Yes, it does
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22711682
How many rows does this return?

select CASE
       WHEN EXISTS (SELECT d.MRN FROM ptDictation d
                    INNER JOIN ptEncounter ee
                        ON ee.MRN = d.MRN AND d.DOS = e.DateOfService
                    WHERE d.Status = 'Approved')          THEN 2
       WHEN EXISTS (SELECT s.MRN FROM ptSchedule s
                    INNER JOIN ptEncounter eee
                        ON eee.MRN = s.MRN
                        AND CONVERT(varchar,s.StartDtTm, 10) = CONVERT(varchar,e.DateofService, 10)
                    WHERE s.ApptTypeID = 5) THEN 1
       ELSE 0
       END as DictationState
FROM ptEncounter e
WHERE e.MRN = '5079'
AND   e.DateOfService = '07/5/2004'

0
Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

 
LVL 26

Author Comment

by:EddieShipman
ID: 22711822
Two. But, this is going to be part of a larger stored procedure that returns the value for each record in ptEncounter and it takes 6 secs to return all rows.
There are currently 340412 records in ptEncounter and it takes 18 seconds to run only the
SQL above with no WHERE clause.
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22711888
OK, I follow you now.  There are a few things...first, make sure there are indexes on any field in which you're joining tables or in which you're specifying criteria.  next, see if there is any way you can get aroudn this statement:

AND CONVERT(varchar,s.StartDtTm, 10) = CONVERT(varchar,e.DateofService, 10)
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22712011
No way to get around that date convert because StartDtTm has the TIME part and DateOfService does not.

On ptEncounter there is an index on MRN but not on DateOfService.
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22712035
Add the index to see if it helps.  Are there indexes on ptSchedule and ptDictation?
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22712169
ptDictation, yes one MRN and and one on DOS
   Should I create one on both columns?

ptSchedule, not on either.
   Just created one on both columns
   I also created one on EncounterID, but the data I currently have has no EncounterIDs as it is
   legacy data and was imported incorrectly and We cannot tie the appointments back to the
   particular encounter.

ptEncounter MRN only, not on DateOfService.
   Just created one on both columns
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22712292
>> Should I create one on both columns?
No

Is it faster?
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22712329
Haven't tried it yet, will do so now.
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22712342
19 secs but still unacceptable.
0
 
LVL 60

Accepted Solution

by:
chapmandew earned 2000 total points
ID: 22712349
You've done just about all you can do for this query...consider snapshotting the data into a table every few hours and query from the table.
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22723246
What, no other options?
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22723269
That is correct.
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22741687
I am sorry you didn't get the answer that you wanted to hear, but it is the correct answer.  You can't just delete the question like that.
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22741848
I've gotten other options from SQLServer Central so, apparently, you are not correct.
0
 
LVL 60

Expert Comment

by:chapmandew
ID: 22741882
OK...post them.
0
 
LVL 26

Author Comment

by:EddieShipman
ID: 22795739
GO ahead and leave it open. I am almost ready to post the answer.
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

So every once in a while at work I am asked to export data from one table and insert it into another on a different server.  I hate doing this.  There's so many different tables and data types.  Some column data needs quoted and some doesn't.  What …
Data architecture is an important aspect in Software as a Service (SaaS) delivery model. This article is a study on the database of a single-tenant application that could be extended to support multiple tenants. The application is web-based develope…
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

649 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question