use column alias in other calculation in sql server 2005 - sql-server-2005

Question

I am working with the following query.I want to use Date_Sent_to_Recorder in my other calculations which follows.I am getting an error "Invalid column name 'Date_Sent_to_Recorder'." People recommended using a CTE for this but i am not able to fit it in this scenerio.I have a correlated subquery which calculates Date_Sent_to_Recorder.Please help.
SELECT
C.Name Client ,
SecONdary_Document.Primary_Document_ID ,
SecONdary_Document.Secondary_Document_Id ,
Primary_Document.State + ',' + GB_Counties.CountyName State ,
Grantor.Name Grantor ,
Loan_Number ,
CONVERT(VARCHAR(10), Primary_Document.PIF_Date, 101) PIF_Date ,
( SELECT CASE WHEN dbo.SECONDARY_DOCUMENT.Status_ID = 21
THEN CONVERT(VARCHAR(10), dbo.SECONDARY_DOCUMENT.Updated_Dt, 101)
ELSE ( SELECT TOP 1
CONVERT(VARCHAR(10), dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Created_Dt, 101)
FROM dbo.SECONDARY_DOCUMENT_STATUS_HISTORY
WHERE dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Secondary_Document_ID = SecONdary_Document.Secondary_Document_Id
AND SECONDARY_DOCUMENT_STATUS_HISTORY.Status_ID = 21
ORDER BY dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Created_Dt DESC
)
END
) AS Date_Sent_to_Recorder ,
Satis_TimeFrame ,
CASE WHEN PIF_Date IS NULL
OR Date_Sent_to_Recorder IS NULL THEN NULL
ELSE DATEDIFF(DAY, PIF_Date,
Date_Sent_to_Recorder)
END TotalDays ,
CASE WHEN PIF_Date IS NULL
OR Date_Sent_to_Recorder IS NULL THEN NULL
ELSE CASE WHEN DATEDIFF(DAY, PIF_Date,
ISNULL(Date_Sent_to_Recorder,
GETDATE())) > Satis_TimeFrame
THEN 'N'
ELSE 'Y'
END
END InCompliance ,
Loan_Name ,
Deal_Name ,
Deal.Deal_Id ,
Loan.Loan_Id
FROM Primary_Document
INNER JOIN SecONdary_Document ON SecONdary_Document.Primary_Document_ID = Primary_Document.Primary_Document_ID
INNER JOIN Status ON Status.Status_Id = SecONdary_Document.Status_Id
INNER JOIN GB_Counties ON GB_Counties.CountyId = Primary_Document.County_Id
INNER JOIN Loan ON Loan.Loan_Id = Primary_Document.Loan_Id
EDIT------------
DECLARE #Date_Sent_to_Recorder varchar(10)
SELECT C.Name Client ,
SecONdary_Document.Primary_Document_ID ,
SecONdary_Document.Secondary_Document_Id ,
Primary_Document.State + ',' + GB_Counties.CountyName State ,
Grantor.Name Grantor ,
Loan_Number ,
CONVERT(VARCHAR(10), Primary_Document.PIF_Date, 101) PIF_Date ,
--<START>
--3021,RRaghuvansi,If current status is 21 in SECONDARY_DOCUMENT then take Updated_Dt else take Created_Dt in SECONDARY_DOCUMENT_STATUS_HISTORY with status Out For Recorder
--CONVERT(VARCHAR(20), Recording_Date, 101) AS Recording_Date ,
#Date_Sent_to_Recorder=[dbo].[GET_RecordingDate](SecONdary_Document.Secondary_Document_Id), --<END>
Satis_TimeFrame ,
Loan_Name ,
Deal_Name ,
Deal.Deal_Id ,
Loan.Loan_Id
FROM Primary_Document

Answer 1

Since your schema is sort of unclear, here is a brief sample for the derived table syntax and referencing values from the derived table
Declare #Sample table(id1 int, id2 int, value varchar(20))
insert into #sample values (1,1, 'this')
insert into #sample values(2,2, 'that')
insert into #sample values(3,2, 'the other')
Select t1.ID1, t1.Value, t2.RevVal,
case
when t2.RevVal = 'siht' then 1 else 0
end as RevIsThisBackwards
from #sample t1
inner join (Select id1, reverse(value) as RevVal from #sample) t2
on t1.ID1 = t2.ID1
Results
id VALUES Rev Rev Value is this backwards
1 this siht 1
2 that taht 0
3 the other rehto eht 0
So you'll want to move the calculated column, and sufficient columns to join to into a derived table, in your case it would it would look similar to the below
INNER JOIN Loan ON Loan.Loan_Id = Primary_Document.Loan_Id
INNER JOIN (Select SomPKField, CASE WHEN dbo.SECONDARY_DOCUMENT.Status_ID = 21
THEN CONVERT(VARCHAR(10), dbo.SECONDARY_DOCUMENT.Updated_Dt, 101)
ELSE ( SELECT TOP 1
CONVERT(VARCHAR(10), dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Created_Dt, 101)
FROM dbo.SECONDARY_DOCUMENT_STATUS_HISTORY
WHERE
dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Secondary_Document_ID = SecONdary_Document.Secondary_Document_Id
AND SECONDARY_DOCUMENT_STATUS_HISTORY.Status_ID = 21
ORDER BY dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Created_Dt DESC
)
END as Date_Sent_to_Recorder
) as Sub1
on SomeTable.SomePKField = Sub1.SomePKField
**I edit your edit in this edit.**
SELECT C.Name Client ,
SecONdary_Document.Primary_Document_ID ,
SecONdary_Document.Secondary_Document_Id ,
Primary_Document.State + ','
+ GB_Counties.CountyName State ,
Grantor.Name Grantor ,
Loan_Number ,
CONVERT(VARCHAR(10), Primary_Document.PIF_Date, 101) PIF_Date ,
[dbo].[GET_RecordingDate]
(SecONdary_Document.Secondary_Document_Id)
As Date_Sent_To_Recorder
Satis_TimeFrame ,
Loan_Name ,
Deal_Name ,
Deal.Deal_Id ,
Loan.Loan_Id
FROM Primary_Document

Answer 2

You cannot refer to a computed column in other columns of a SELECT. The simplest solution for what you are trying to achieve is to pre-calculate Date_Sent_to_Recorder and store it in a temporary table, then join to that table when doing your main query.
Protip: use proper formatting and table aliases; SQL like you posted is difficult to read, and almost impossible to understand.
Edit: something like this:
create table #temp
( Primary_Document_ID int,
Date_Sent_To_Recorder datetime )
insert #temp
select Primary_Document_ID,
CASE
WHEN dbo.SECONDARY_DOCUMENT.Status_ID = 21
THEN CONVERT(VARCHAR(10), dbo.SECONDARY_DOCUMENT.Updated_Dt, 101)
ELSE
(SELECT TOP 1
CONVERT(VARCHAR(10), dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Created_Dt, 101)
FROM dbo.SECONDARY_DOCUMENT_STATUS_HISTORY
WHERE dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Secondary_Document_ID = SecONdary_Document.Secondary_Document_Id
AND SECONDARY_DOCUMENT_STATUS_HISTORY.Status_ID = 21
ORDER BY dbo.SECONDARY_DOCUMENT_STATUS_HISTORY.Created_Dt DESC)
END
from SecONdary_Document
-- main select, joining to #temp

Answer 3

Because Date_Sent_to_Recorder depends only on SECONDARY_DOCUMENT & SECONDARY_DOCUMENT_STATUS_HISTORY tables, you can replace SECONDARY_DOCUMENT in the INNER JOIN by the following (which gives you Date_Sent_to_Recorder as a column):
SELECT SD.Primary_Document_ID,
SD.Secondary_Document_Id,
CASE WHEN SD.Status_ID = 21
THEN CONVERT(VARCHAR(10), SD.Updated_Dt, 101)
ELSE CONVERT(VARCHAR(10), SDSH.Created_Dt, 101)
END Date_Sent_to_Recorder
FROM SECONDARY_DOCUMENT SD
INNER JOIN dbo.SECONDARY_DOCUMENT_STATUS_HISTORY SDSH
ON SDSH.Secondary_Document_ID = SD.Secondary_Document_Id
AND SDSH.Status_ID = 21
INNER JOIN (SELECT Secondary_Document_ID, max(Created_Dt) Created_Dt
FROM dbo.SECONDARY_DOCUMENT_STATUS_HISTORY
WHERE Status_ID = 21
GROUP BY Secondary_Document_ID) SDSH2
ON SDSH.Secondary_Document_ID = SDSH2.Secondary_Document_Id
AND SDSH.Created_Dt = SDSH2.Created_Dt
and finally you have:
SELECT C.Name Client,
SecONdary_Document.Primary_Document_ID,
SecONdary_Document.Secondary_Document_Id,
Primary_Document.State + ',' + GB_Counties.CountyName State,
Grantor.Name Grantor,
Loan_Number,
CONVERT(VARCHAR(10), Primary_Document.PIF_Date, 101) PIF_Date,
SecONdary_Document.Date_Sent_to_Recorder,
Satis_TimeFrame,
CASE WHEN PIF_Date IS NULL
OR SecONdary_Document.Date_Sent_to_Recorder IS NULL
THEN NULL
ELSE DATEDIFF(DAY, PIF_Date,
SecONdary_Document.Date_Sent_to_Recorder)
END TotalDays,
CASE WHEN PIF_Date IS NULL
OR SecONdary_Document.Date_Sent_to_Recorder IS NULL THEN NULL
ELSE CASE WHEN DATEDIFF(DAY, PIF_Date,
ISNULL(SecONdary_Document.Date_Sent_to_Recorder
,GETDATE())) > Satis_TimeFrame
THEN 'N'
ELSE 'Y'
END
END InCompliance,
Loan_Name,
Deal_Name,
Deal.Deal_Id,
Loan.Loan_Id
FROM Primary_Document
INNER JOIN (SELECT SD.Primary_Document_ID,
SD.Secondary_Document_Id,
CASE WHEN SD.Status_ID = 21
THEN CONVERT(VARCHAR(10), SD.Updated_Dt, 101)
ELSE CONVERT(VARCHAR(10), SDSH.Created_Dt, 101)
END Date_Sent_to_Recorder
FROM SECONDARY_DOCUMENT SD
INNER JOIN dbo.SECONDARY_DOCUMENT_STATUS_HISTORY SDSH
ON SDSH.Secondary_Document_ID = SD.Secondary_Document_Id
AND SDSH.Status_ID = 21
INNER JOIN (SELECT Secondary_Document_ID, max(Created_Dt) Created_Dt
FROM dbo.SECONDARY_DOCUMENT_STATUS_HISTORY
WHERE Status_ID = 21
GROUP BY Secondary_Document_ID) SDSH2
ON SDSH.Secondary_Document_ID = SDSH2.Secondary_Document_Id
AND SDSH.Created_Dt = SDSH2.Created_Dt) SecONdary_Document
ON SecONdary_Document.Primary_Document_ID
= Primary_Document.Primary_Document_ID
INNER JOIN Status ON Status.Status_Id = SecONdary_Document.Status_Id
INNER JOIN GB_Counties ON GB_Counties.CountyId = Primary_Document.County_Id
INNER JOIN Loan ON Loan.Loan_Id = Primary_Document.Loan_Id