Here is the sample data of the two tables , just put together for easy reference
I want the upper part of the table [Outbound].[dbo].[Encounter_Out_P] with column "277CA_FILENAME","277CA_FILENAME2","277CA_FILENAME3","277CA_FILENAME4" as NULLS which are sorted by File_Submitted_DT ascending order to be updated with "277FileId" values of the lower table [Outbound].[dbo].[Encounter_Out_277_P] which are sorted by EDIFECSProcessDate in ascending order. Thanks in advance
Here is my code
WITH
cte_2771 AS (
SELECT
"277CA_FILENAME",
File_Submitted_DT,
TRN02_PatientControlNumber
FROM (
SELECT
I."277CA_FILENAME",
I.File_Submitted_DT,
#cte_277.TRN02_PatientControlNumber
,dense_rank() OVER(PARTITION BY #cte_277.TRN02_PatientControlNumber ORDER BY ABS(DATEDIFF(MINUTE, i.File_Submitted_DT, #cte_277.EDIFECSProcessDate)) ASC) rw1
FROM
[Outbound].[dbo].[Encounter_Out_P] I
INNER JOIN #cte_277 ON I.EncounterID = #cte_277.TRN02_PatientControlNumber
--WHERE EncounterID = 'AP230120920712808806'
)t
WHERE
t.rw1 = 1
)
,
cte_2772 AS (
SELECT
"277FileId"
,1 + ((ROW_NUMBER() OVER(PARTITION BY TRN02_PatientControlNumber ORDER BY EDIFECSProcessDate,File_Submitted_DT ASC ) - 1) % 4)rw2
,TRN02_PatientControlNumber
FROM (
SELECT DISTINCT
p."277FileId",
p.EDIFECSProcessDate,
p.TRN02_PatientControlNumber
,p.ID
,cte_2771.File_Submitted_DT
FROM [Outbound].[dbo].[Encounter_Out_277_P] p
INNER JOIN cte_2771 ON cte_2771.File_Submitted_DT < p.EDIFECSProcessDate
WHERE
p.TRN02_PatientControlNumber = cte_2771.TRN02_PatientControlNumber
) t
)
UPDATE cte_2771
SET "277CA_FILENAME" =
COALESCE(cte_2771."277CA_FILENAME", cte_2772."277FileId" )
FROM cte_2771 INNER JOIN cte_2772
ON cte_2772.TRN02_PatientControlNumber = cte_2771.TRN02_PatientControlNumber
WHERE cte_2772.rw2 = 1
I want the output to be like below, (the upperpart) just put together for easy reference
Notes
I have posted the code for "277CA_FILENAME" only, since it is the same for the rest by changing the WHERE condition changes as "WHERE cte_2772.rw2 = 2,3,4"
if I Uncomment the --WHERE EncounterID = 'AP230120920712808806' in the cte_2771 , it is working perfectly, but if I comment it and run for the entire load, one row gets correct and the other one gets NULL
Related
Two tables store different properties for each product: CTI_ROUTING_VIEW and ORD_MACH_OPS
They are both organized by SPEC_NO > MACH_SEQ_NO but the format of the Sequence number is different for each table so it can't be used for a JOIN. ORCH_MACH_OPS has MACHINE and PASS_NO, meaning if a product goes through the same machine twice, the row with the higher SEQ_NO will be PASS_NO 2, 3, etc. CTI_ROUTING_VIEW does not offer PASS_NO, but I can achieve the desired result with:
SELECT TOP (1000) [SPEC_NO]
,[SPEC_PART_NO]
,[MACH_NO]
,[MACH_SEQ_NO]
,[BLANK_WID]
,[BLANK_LEN]
,[NO_OUT_WID]
,[NO_OUT_LEN]
,[SU_MINUTES]
,[RUN_SPEED]
,[NO_COLORS]
,[PRINTDIEID]
,[CUTDIEID]
,ROW_NUMBER() OVER (PARTITION BY MACH_NO ORDER BY MACH_SEQ_NO) as PASS_NO
FROM [CREATIVE].[dbo].[CTI_ROUTING_VIEW]
I would think that I could use this artificial PASS_NO as a JOIN condition, but I can't seem to get it to come through. This is my first time using ROW_NUMBER() so I'm just wondering if I'm doing something wrong in the JOIN syntax.
SELECT rOrd.[SPEC_NO]
,rOrd.[MACH_SEQ_NO]
,rOrd.[WAS_REROUTED]
,rOrd.[NO_OUT]
,rOrd.[PART_COMP_FLG]
,rOrd.[SCHED_START]
,rOrd.[SCHED_STOP]
,rOrd.[MACH_REROUTE_FLG]
,rOrd.[MACH_DESCR]
,rOrd.REPLACED_MACH_NO
,rOrd.MACH_NO
,rOrd.PASS_NO
,rWip.MAX_TRX_DATETIME
,ISNULL(rWip.NET_FG_SUM*rOrd.NO_OUT,0) as NET_FG_SUM
,CASE
WHEN rCti.BLANK_WID IS NULL then 'N//A'
ELSE CONCAT(rCti.BLANK_WID, ' X ', rCti.BLANK_LEN)
END AS SIZE
,ISNULL(rCti.PRINTDIEID,'N//A') as PRINTDIEID
,ISNULL(rCti.CUTDIEID, 'N//A') as CUTDIEID
,rStyle.DESCR as STYLE
,ISNULL(rCti.NO_COLORS, 0) as NO_COLORS
,CAST(CONCAT(rOrd.ORDER_NO,'-',rOrd.ORDER_PART_NO) as varchar) as ORD_MACH_KEY
FROM [CREATIVE].[dbo].[ORD_MACH_OPS] as rOrd
LEFT JOIN (SELECT DISTINCT
[SPEC_NO]
,[SPEC_PART_NO]
,[MACH_NO]
,MACH_SEQ_NO
,[BLANK_WID]
,[BLANK_LEN]
,[NO_COLORS]
,[PRINTDIEID]
,[CUTDIEID]
,ROW_NUMBER() OVER (PARTITION BY MACH_NO ORDER BY MACH_SEQ_NO) as PASS_NO
FROM [CREATIVE].[dbo].[CTI_ROUTING_VIEW]) as rCti
ON rCti.SPEC_NO = rOrd.SPEC_NO
and rCti.MACH_NO =
CASE
WHEN rOrd.REPLACED_MACH_NO is null then rOrd.MACH_NO
ELSE rOrd.REPLACED_MACH_NO
END
and rCti.PASS_NO = rOrd.PASS_NO
LEFT JOIN INVENTORY_ITEM_TAB as rTab
ON rTab.SPEC_NO = rOrd.SPEC_NO
LEFT JOIN STYLE_DESCRIPTION as rStyle
ON rStyle.DESCR_CD = rTab.STYLE_CD
LEFT JOIN (
SELECT
JOB_NUMBER
,FORM_NO
,TRX_ORIG_MACH_NO
,PASS_NO
,SUM(GROSS_FG_QTY-WASTE_QTY) as NET_FG_SUM
,MAX(TRX_DATETIME) as MAX_TRX_DATETIME
FROM WIP_MACH_OPS
WHERE GROSS_FG_QTY <> 0
GROUP BY JOB_NUMBER, FORM_NO, TRX_ORIG_MACH_NO, PASS_NO) as rWip
ON rWip.JOB_NUMBER = rOrd.ORDER_NO
and rWip.FORM_NO = rOrd.ORDER_PART_NO
and rWip.TRX_ORIG_MACH_NO = rOrd.MACH_NO
and rWip.PASS_NO = rOrd.PASS_NO
WHERE rOrd.SCHED_START > DATEADD(DAY, -20, GETDATE())
I fixed it by adding a second partition.
ROW_NUMBER() OVER (PARTITION BY SPEC_NO, MACH_NO ORDER BY MACH_SEQ_NO) as PASS_NO
SQL novice here learning on the job, still a greenhorn. I have a problem I don't know how to overcome. Using IBM Netezza and Aginity Workbench.
My current output will try to return one row per case number based on when a task was created. It will only keep the row with the newest task. This gets me about 85% of the way there. The issue is that sometimes multiple tasks have a create day of the same day.
I would like to incorporate Task Followup Date to only keep the newest row if there are multiple rows with the same Case Number. I posted an example of what my current code outputs and what i would like it to output.
Current code
SELECT
A.PS_CASE_ID AS Case_Number
,D.CASE_TASK_TYPE_NM AS Task
,C.TASK_CRTE_TMS
,C.TASK_FLWUP_DT AS Task_Followup_Date
FROM VW_CC_CASE A
INNER JOIN VW_CASE_TASK C ON (A.CASE_ID = C.CASE_ID)
INNER JOIN VW_CASE_TASK_TYPE D ON (C.CASE_TASK_TYPE_ID = D.CASE_TASK_TYPE_ID)
INNER JOIN ADMIN.VW_RSN_CTGY B ON (A.RSN_CTGY_ID = B.RSN_CTGY_ID)
WHERE
(A.PS_Z_SPSR_ID LIKE '%EFT' OR A.PS_Z_SPSR_ID LIKE '%CRDT')
AND CAST(A.CASE_CRTE_TMS AS DATE) >= '2020-01-01'
AND B.RSN_CTGY_NM = 'Chargeback Initiation'
AND CAST(C.TASK_CRTE_TMS AS DATE) = (SELECT MAX(CAST(C2.TASK_CRTE_TMS AS DATE)) from VW_CASE_TASK C2 WHERE C2.CASE_ID = C.CASE_ID)
GROUP BY
A.PS_CASE_ID
,D.CASE_TASK_TYPE_NM
,C.TASK_CRTE_TMS
,C.TASK_FLWUP_DT
Current output
Desired output
You could use ROW_NUMBER here:
WITH cte AS (
SELECT DISTINCT A.PS_CASE_ID AS Case_Number, D.CASE_TASK_TYPE_NM AS Task,
C.TASK_CRTE_TMS, C.TASK_FLWUP_DT AS Task_Followup_Date,
ROW_NUMBER() OVER (PARTITION BY A.PS_CASE_ID ORDER BY C.TASK_FLWUP_DT DESC) rn
FROM VW_CC_CASE A
INNER JOIN VW_CASE_TASK C ON A.CASE_ID = C.CASE_ID
INNER JOIN VW_CASE_TASK_TYPE D ON C.CASE_TASK_TYPE_ID = D.CASE_TASK_TYPE_ID
INNER JOIN ADMIN.VW_RSN_CTGY B ON A.RSN_CTGY_ID = B.RSN_CTGY_ID
WHERE (A.PS_Z_SPSR_ID LIKE '%EFT' OR A.PS_Z_SPSR_ID LIKE '%CRDT') AND
CAST(A.CASE_CRTE_TMS AS DATE) >= '2020-01-01' AND
B.RSN_CTGY_NM = 'Chargeback Initiation' AND
CAST(C.TASK_CRTE_TMS AS DATE) = (SELECT MAX(CAST(C2.TASK_CRTE_TMS AS DATE))
FROM VW_CASE_TASK C2
WHERE C2.CASE_ID = C.CASE_ID)
)
SELECT
Case_Number,
Task,
TASK_CRTE_TMS,
Task_Followup_Date
FROM cte
WHERE rn = 1;
One method used window functions:
with cte as (
< your query here >
)
select x.*
from (select cte.*,
row_number() over (partition by case_number, Task_Followup_Date
order by TASK_CRTE_TMS asc
) as seqnum
from cte
) x
where seqnum = 1;
I have the following SQL Query:
select
distinct
Equipment_Reserved.Equipment_Attached_To,
Equipment.Name
from
Equipment,
Studies,
Equipment_Reserved
where
Studies.Study = 'MAINT19-01'
and
Equipment.idEquipment = Equipment_Reserved.Equipment_idEquipment
and
Studies.idStudies = Equipment_Reserved.Studies_idStudies
and
Equipment.Type = 'Probe'
This query produces the following results:
Equipment_Attached_To Name
2297 R1-P1
2297 R1-P2
2299 R1-P3
I would like to change it to the following:
Equipment_Attached_To Name1 Name2
2297 R1-P1 R1-P2
2299 R1-P3 NULL
Thanks for your help!
I'd first change your query from the old, legacy JOIN syntax to an explicit join as it makes the query easier to understand:
SELECT
DISTINCT
Equipment_Reserved.Equipment_Attached_To,
Equipment.Name
FROM
Equipment
INNER JOIN Equipment_Reserved ON Equipment_Reserved.Equipment_idEquipment = Equipment.idEquipment
INNER JOIN Studies ON Studies.idStudies = Equipment_Reserved.Studies_idStudies
WHERE
Studies.Study = 'MAINT19-01'
AND
Equipment.Type = 'Probe'
I don't think you actually need a PIVOT - I think you can do this with a nested query with the ROW_NUMBER function. I've seen that PIVOT queries often have worse query execution plans than nested-queries.
Let's add ROW_NUMBER (which require an ORDER BY as it's a windowing-function) and a matching ORDER BY in the whole query to make it consistent). Let's also use PARTITION BY so it resets the row-number for each Equipment_Attached_To value:
SELECT
DISTINCT
Equipment_Reserved.Equipment_Attached_To,
Equipment.Name,
ROW_NUMBER() OVER (PARTITION BY Equipment_Attached_To ORDER BY [Name]) AS RowNumber
FROM
Equipment
INNER JOIN Equipment_Reserved ON Equipment_Reserved.Equipment_idEquipment = Equipment.idEquipment
INNER JOIN Studies ON Studies.idStudies = Equipment_Reserved.Studies_idStudies
WHERE
Studies.Study = 'MAINT19-01'
AND
Equipment.Type = 'Probe'
ORDER BY
Equipment_Attached_To,
[Name]
This will give output like this:
Equipment_Attached_To Name RowNumber
2297 R1-P1 1
2297 R1-P2 2
2299 R1-P3 1
This can then be split out into explicit columns like so below. The use of MAX() is arbitrary (we could use MIN() instead) and only because we're dealing with a GROUP BY and because the CASE WHEN... restricts the input set to just 1 row anyway.
SELECT
Equipment_Attached_To,
MAX( CASE WHEN RowNumber = 1 THEN [Name] END ) AS Name1,
MAX( CASE WHEN RowNumber = 2 THEN [Name] END ) AS Name2
FROM
(
-- the query from above
)
GROUP BY
Equipment_Attached_To
ORDER BY
Equipment_Attached_To,
Name1,
Name2
So the final query is:
SELECT
Equipment_Attached_To,
MAX( CASE WHEN RowNumber = 1 THEN [Name] END ) AS Name1,
MAX( CASE WHEN RowNumber = 2 THEN [Name] END ) AS Name2
FROM
(
SELECT
DISTINCT
Equipment_Reserved.Equipment_Attached_To,
Equipment.Name,
ROW_NUMBER() OVER (PARTITION BY Equipment_Attached_To ORDER BY [Name]) AS RowNumber
FROM
Equipment
INNER JOIN Equipment_Reserved ON Equipment_Reserved.Equipment_idEquipment = Equipment.idEquipment
INNER JOIN Studies ON Studies.idStudies = Equipment_Reserved.Studies_idStudies
WHERE
Studies.Study = 'MAINT19-01'
AND
Equipment.Type = 'Probe'
)
GROUP BY
Equipment_Attached_To
ORDER BY
Equipment_Attached_To,
Name1,
Name2
Let's start with some basics.
To facilitate reading the code, I added alias to the tables using their initials.
Then, I converted the old join syntax which is partly deprecated to use the standard syntax since 1992 (27 years and people still use the old syntax).
Finally, since there are only 2 possible values, we can use MIN and MAX to separate them in 2 columns.
And because we're using aggregate functions, we remove the DISTINCT and use GROUP BY
The code now looks like this:
SELECT er.Equipment_Attached_To,
--Gets the first row for the id
MIN( e.Name) AS Name1,
--If the MAX is equal to the MIN, returns a NULL. If not, it returns the second value.
NULLIF( MAX(e.Name), MIN( e.Name)) AS Name2
FROM Equipment e
JOIN Studies s ON s.idStudies = er.Studies_idStudies
JOIN Equipment_Reserved er ON e.idEquipment = er.Equipment_idEquipment
WHERE s.Study = 'MAINT19-01'
AND e.Type = 'Probe'
GROUP BY er.Equipment_Attached_To;
TL;DR: scroll down to TASK 2.
I am dealing with the following data set:
email,createdby,createdon
a#b.c,jsmith,2016-10-10
a#b.c,nsmythe,2016-09-09
a#b.c,vstark,2016-11-11
b#x.y,ajohnson,2015-02-03
b#x.y,elear,2015-01-01
...
and so on. Each email is guaranteed to have at least one duplicate in the data set.
Now, there are two tasks to resolve; I resolved one of them but am struggling with the other one. I will now present both tasks for completeness.
TASK 1 (resolved):
For each row, for each email, return an additional column with the name of the user that created the first record with this email.
Expected result for the above sample data set:
email,createdby,createdon,original_createdby
a#b.c,jsmith,2016-10-10,nsmythe
a#b.c,nsmythe,2016-09-09,nsmythe
a#b.c,vstark,2016-11-11,nsmythe
b#x.y,ajohnson,2015-02-03,elear
b#x.y,elear,2015-01-01,elear
Code to get the above:
;WITH q0 -- this is just a security measure in case there are unique emails in the data set
AS ( SELECT t.email
FROM t
GROUP BY t.email
HAVING COUNT(*) > 1) ,
q1
AS ( SELECT q0.email
, createdon
, createdby
, ROW_NUMBER() OVER ( PARTITION BY q0.email ORDER BY createdon ) rn
FROM t
JOIN q0
ON t.email = q0.email)
SELECT q1.email
, q1.createdon
, q1.createdby
, LAG(q1.createdby, q1.rn - 1) OVER ( ORDER BY q1.email, q1.createdon ) original_createdby
FROM q1
ORDER BY q1.email
, q1.rn
Brief explanation: I partition data set by email, then I number rows in each partition ordered by creation date, finally I return [createdby] value from (rn-1)th record. Works exactly as expected.
Now, similar to the above, there is TASK 2:
TASK 2:
For each row, for each email, return name of the user that created the first duplicate. I.e. name of a user where rn=2.
Expected result:
email,createdby,createdon,first_dupl_createdby
a#b.c,jsmith,2016-10-10,jsmith
a#b.c,nsmythe,2016-09-09,jsmith
a#b.c,vstark,2016-11-11,jsmith
b#x.y,ajohnson,2015-02-03,ajohnson
b#x.y,elear,2015-01-01,ajohnson
I want to keep things performant so trying to employ LEAD-LAG functions:
WITH q0
AS ( SELECT t.email
FROM t
GROUP BY t.email
HAVING COUNT(*) > 1) ,
q1
AS ( SELECT q0.email
, createdon
, createdby
, ROW_NUMBER() OVER ( PARTITION BY q0.email ORDER BY createdon ) rn
FROM t
JOIN q0
ON t.email = q0.email)
SELECT q1.email
, q1.createdon
, q1.createdby
, q1.rn
, CASE q1.rn
WHEN 1 THEN LEAD(q1.createdby, 1) OVER ( ORDER BY q1.email, q1.createdon )
ELSE LAG(q1.createdby, q1.rn - 2) OVER ( ORDER BY q1.email, q1.createdon )
END AS first_dupl_createdby
FROM q1
ORDER BY q1.email
, q1.rn
Explanation: for the first record in each partition, return [createdby] from the following record (i.e. from the record containing the first duplicate). For all other records in the same partition return [createdby] from (rn-2) records ago (i.e. for rn = 2 we're staying on the same record, for rn = 3 we're going 1 record back, for rn = 4 - 2 records back and so on).
An issue comes up on the
ELSE LAG(q1.createdby, q1.rn - 2)
operation. Apparently, against any logic, despite the existence of the preceding line (WHEN 1 THEN...), the ELSE block is also evaluated for rn = 1, resulting in a negative offset value passed to the LAG function:
Msg 8730, Level 16, State 2, Line 37
Offset parameter for Lag and Lead functions cannot be a negative value.
When I comment out that ELSE line, the whole thing works fine but obviously I am not getting any results in the first_dupl_createdby column for rn > 1.
QUESTION:
Is there any way of re-writing the above CASE statement (in TASK #2) so that it always returns the value from a record where rn = 2 within each partition but - and this is important bit - without doing a self-JOIN operation (I know I could prepare rows where rn = 2 in a separate sub-query but this would mean extra scans on the whole table and also running an unnecessary self-JOIN).
I think you can simply use the max window function as you are trying to get the value from rownumber = 2 for each partition.
SELECT q1.email
, q1.createdon
, q1.createdby
, q1.rn
, max(case when rn=2 then q1.createdby end) over(partition by q1.email) first_dup_created_by
FROM q1
ORDER BY q1.email, q1.rn
You can use a similar query to get the results for rownumber=1 for the 1st scenario as well.
You can get the information for each email using row_number() and conditional aggregation:
select email,
max(case when seqnum = 1 then createdby end) as createdby_first,
max(case when seqnum = 2 then createdby end) as createdby_second
from (select t.*,
row_number() over (partition by email order by createdon) as seqnum
from t
) t
group by email;
You can join this information back to the original data to get the information you want. I don't see how lag() naturally would be used to solve this problem.
/shrug
; WITH duplicate_email_addresses AS (
SELECT email
FROM t
GROUP
BY email
HAVING Count(*) > 1
)
, records_with_duplicate_email_addresses AS (
SELECT email
, createdon
, createdby
, Row_Number() OVER (PARTITION BY email ORDER BY createdon) AS sequencer
FROM t
WHERE EXISTS (
SELECT *
FROM duplicate_email_addresses
WHERE email = t.email
)
)
, second_duplicate_record AS ( -- Why do you need any more than this?
SELECT email
, createdon
, createdby
FROM records_with_duplicate_email_addresses
WHERE sequencer = 2
)
SELECT records_with_duplicate_email_addresses.email
, records_with_duplicate_email_addresses.createdon
, records_with_duplicate_email_addresses.createdby
, second_duplicate_record.createdby AS first_duplicate_createdby
FROM records_with_duplicate_email_addresses
INNER
JOIN second_duplicate_record
ON second_duplicate_record.email = records_with_duplicate_email_addresses.email
;
The code below joins two tables and I need to extract only the latest date per account, though it holds multiple accounts and history records. I wanted to use the MAX function, but not sure how to incorporate it for this case. I am using My SQL server.
Appreciate any help !
select
PROP.FileName,PROP.InsName, PROP.Status,
PROP.FileTime, PROP.SubmissionNo, PROP.PolNo,
PROP.EffDate,PROP.ExpDate, PROP.Region,
PROP.Underwriter, PROP_DATA.Data , PROP_DATA.Label
from
Property.dbo.PROP
inner join
Property.dbo.PROP_DATA on Property.dbo.PROP.FileID = Actuarial.dbo.PROP_DATA.FileID
where
(PROP_DATA.Label in ('Occupancy' , 'OccupancyTIV'))
and (PROP.EffDate >= '42278' and PROP.EffDate <= '42643')
and (PROP.Status = 'Bound')
and (Prop.FileTime = Max(Prop.FileTime))
order by
PROP.EffDate DESC
Assuming your DBMS supports windowing functions and the with clause, a max windowing function would work:
with all_data as (
select
PROP.FileName,PROP.InsName, PROP.Status,
PROP.FileTime, PROP.SubmissionNo, PROP.PolNo,
PROP.EffDate,PROP.ExpDate, PROP.Region,
PROP.Underwriter, PROP_DATA.Data , PROP_DATA.Label,
max (PROP.EffDate) over (partition by PROP.PolNo) as max_date
from Actuarial.dbo.PROP
inner join Actuarial.dbo.PROP_DATA
on Actuarial.dbo.PROP.FileID = Actuarial.dbo.PROP_DATA.FileID
where (PROP_DATA.Label in ('Occupancy' , 'OccupancyTIV'))
and (PROP.EffDate >= '42278' and PROP.EffDate <= '42643')
and (PROP.Status = 'Bound')
and (Prop.FileTime = Max(Prop.FileTime))
)
select
FileName, InsName, Status, FileTime, SubmissionNo,
PolNo, EffDate, ExpDate, Region, UnderWriter, Data, Label
from all_data
where EffDate = max_date
ORDER BY EffDate DESC
This also presupposes than any given account would not have two records on the same EffDate. If that's the case, and there is no other objective means to determine the latest account, you could also use row_numer to pick a somewhat arbitrary record in the case of a tie.
Using straight SQL, you can use a self-join in a subquery in your where clause to eliminate values smaller than the max, or smaller than the top n largest, and so on. Just set the number in <= 1 to the number of top values you want per group.
Something like the following might do the trick, for example:
select
p.FileName
, p.InsName
, p.Status
, p.FileTime
, p.SubmissionNo
, p.PolNo
, p.EffDate
, p.ExpDate
, p.Region
, p.Underwriter
, pd.Data
, pd.Label
from Actuarial.dbo.PROP p
inner join Actuarial.dbo.PROP_DATA pd
on p.FileID = pd.FileID
where (
select count(*)
from Actuarial.dbo.PROP p2
where p2.FileID = p.FileID
and p2.EffDate <= p.EffDate
) <= 1
and (
pd.Label in ('Occupancy' , 'OccupancyTIV')
and p.Status = 'Bound'
)
ORDER BY p.EffDate DESC
Have a look at this stackoverflow question for a full working example.
Not tested
with temp1 as
(
select foo
from bar
whre xy = MAX(xy)
)
select PROP.FileName,PROP.InsName, PROP.Status,
PROP.FileTime, PROP.SubmissionNo, PROP.PolNo,
PROP.EffDate,PROP.ExpDate, PROP.Region,
PROP.Underwriter, PROP_DATA.Data , PROP_DATA.Label
from Actuarial.dbo.PROP
inner join temp1 t
on Actuarial.dbo.PROP.FileID = t.dbo.PROP_DATA.FileID
ORDER BY PROP.EffDate DESC