Is it possible to refer to another case statement name in another case statement within SQL query?
Example: I have 3 case statements. The first 2 case statements are returning values based off coded fields. My 3rd case statement I would like to refer to the ending case name to return a sum of quantity.
However, I cannot figure how to get the case statement to refer to the previous case names I created. I hope I am explaining this correctly.
Any assistance would be greatly appreciated. Please see attached image for more detail.
SELECT CI_ITEM.ITEMCODE
, CI_ITEM.ITEMCODEDESC
, CASE WHEN DATEDIFF("M",CI_ITEM.DATECREATED,GETDATE()) <60 THEN DATEDIFF("M",CI_ITEM.DATECREATED,GETDATE())
ELSE 60 END AS NO_OF_MONTHS
, CASE WHEN DATEDIFF("M",IM_ITEMTRANSACTIONHISTORY.TRANSACTIONDATE,GETDATE()) <=60
AND IM_ITEMTRANSACTIONHISTORY.TRANSACTIONCODE IN ('BI','II','SO','WI')
THEN IM_ITEMTRANSACTIONHISTORY.TRANSACTIONQTY *-1 ELSE '0' END AS QTY_CONSUMED_60_MONTHS
, CASE WHEN NO_OF_MONTHS = 0 THEN 0 ELSE SUM([QTY_CONSUMED_60_MONTHS])/ [NO_OF_MONTHS] END AS MONTHLY_AVE_ON_60MONTHS_DATA
FROM CI_ITEM
INNER JOIN IM_ITEMTRANSACTIONHISTORY ON CI_ITEM.ITEMCODE = IM_ITEMTRANSACTIONHISTORY.ITEMCODE
Simply wrap your dependent cases within a sub query and reference them as fields of the sub query result.
SELECT
*,
CASE WHEN NO_OF_MONTHS = 0 THEN 0 ELSE SUM([QTY_CONSUMED_60_MONTHS])/ [NO_OF_MONTHS] END AS MONTHLY_AVE_ON_60MONTHS_DATA
FROM
(
SELECT CI_ITEM.ITEMCODE
, CI_ITEM.ITEMCODEDESC
, CASE WHEN DATEDIFF("M",CI_ITEM.DATECREATED,GETDATE()) <60 THEN DATEDIFF("M",CI_ITEM.DATECREATED,GETDATE())
ELSE 60 END AS NO_OF_MONTHS
, CASE WHEN DATEDIFF("M",IM_ITEMTRANSACTIONHISTORY.TRANSACTIONDATE,GETDATE()) <=60
AND IM_ITEMTRANSACTIONHISTORY.TRANSACTIONCODE IN ('BI','II','SO','WI')
THEN IM_ITEMTRANSACTIONHISTORY.TRANSACTIONQTY *-1 ELSE '0' END AS QTY_CONSUMED_60_MONTHS
FROM CI_ITEM
INNER JOIN IM_ITEMTRANSACTIONHISTORY ON CI_ITEM.ITEMCODE = IM_ITEMTRANSACTIONHISTORY.ITEMCODE
)AS X
Related
I've been grinding on this small snippet of simple code for a day and can't find the issue causing the error. As the title states, I am getting error ORA-00905 Missing Keyword when trying to execute the following code:
SELECT DISTINCT DM.DESCRIPTION AS "AGENCY",
DM.DEPT_NO AS "DEPT NO",
CASE
WHEN VMP.RESERVE_DT IS NULL THEN
NULL
ELSE
VMP.RESERVE_DT
END AS "RESV_DT",
CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN
NULL
ELSE
VMP.EST_PICKUP_DT
END AS "EST_PKUP_DT",
CASE
WHEN VMP.EST_RETURN_DT IS NULL THEN
NULL
ELSE
VMP.EST_RETURN_DT
END AS "EST_RETN_DT",
VMP.EMP_NAME AS "EMPL_NAME",
VMP.UNIT_NO AS "UNIT_NUMBER",
VMP.RENTAL_CLASS_DESCRIPTION AS "RENT_CLS",
VMP.MP_TICKET_NO AS "MP_TKT_NO"
FROM DEPT_MAIN DM
INNER JOIN VIEW_MPOOL VMP ON VMP.DEPT_ID = DM.DEPT_ID
WHERE CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN
NULL
ELSE
TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
END
GROUP BY DM.DESCRIPTION,
DM.DEPT_NO,
CASE
WHEN VMP.RESERVE_DT IS NULL THEN
NULL
ELSE
VMP.RESERVE_DT
END,
CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN
NULL
ELSE
VMP.EST_PICKUP_DT
END,
CASE
WHEN VMP.EST_RETURN_DT IS NULL THEN
NULL
ELSE
VMP.EST_RETURN_DT
END,
VMP.EMP_NAME,
VMP.UNIT_NO,
VMP.RENTAL_CLASS_DESCRIPTION,
VMP.MP_TICKET_NO
ORDER BY CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN
NULL
ELSE
VMP.EST_PICKUP_DT
END ASC
The basis of this code was generated through an adhoc reporting program and was originally fully-qualified. I stripped out the extraneous quotation marks and assigned table aliases to clean it up. Though I hoped these efforts would help me find the issue, I am unable to find the cause. Thank you for your consideration.
Try to replace this :
WHERE
CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN NULL
ELSE TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
END
With :
WHERE
CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN NULL
ELSE TRUNC(VMP.EST_PICKUP_DT)
END
= TRUNC(SYSDATE)
Please note that this whole expression (and others similar in the query) could be simplified as as :
WHERE
TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
When VMP.EST_PICKUP_DT is NULL, TRUNC will return NULL, which will not be equal to TRUNC(SYSDATE).
Here:
WHERE
CASE
WHEN VMP.EST_PICKUP_DT IS NULL
THEN NULL
ELSE TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
END
The END is after a comparison and the case is not being compared against a value.
Switch it like:
WHERE
CASE
WHEN VMP.EST_PICKUP_DT IS NULL
THEN NULL
ELSE TRUNC(VMP.EST_PICKUP_DT)
END = TRUNC(SYSDATE)
Which as horse says, can just be simplified as
WHERE TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
since a NULL value on VMP.EST_PICKUP_DT will never match TRUNC(SYSDATE).
can't find the issue causing the error
Although I suppose that #EzLo and #a_horse_with_no_name maybe already found error in this case, I can propose a general procedure in debugging such queries.
Step 1: Debug your JOIN- and WHERE- predicates
Comment everything in your SELECT-statement, leave only JOINs, substitute fields with * or constant expression.
E.g.
SELECT 1
-- DISTINCT DM.DESCRIPTION AS "AGENCY",
-- DM.DEPT_NO AS "DEPT NO",
-- CASE
-- ....
-- VMP.RENTAL_CLASS_DESCRIPTION AS "RENT_CLS",
-- VMP.MP_TICKET_NO AS "MP_TKT_NO"
FROM DEPT_MAIN DM
INNER JOIN VIEW_MPOOL VMP ON VMP.DEPT_ID = DM.DEPT_ID
WHERE CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN
NULL
ELSE
TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
END
-- GROUP BY DM.DESCRIPTION,
-- ....
-- ORDER BY ..
In case of multiple complex predicates - uncomment one predicate at a time.
Step 2: Debug your GROUP BYs and HAVINGs
Uncomment GROUP BY section and edit fields section of your query.
If you have complex groupby's - uncomment by one field at time.
Start from simplest to complex
SELECT
DM.DESCRIPTION
,DM.DEPT_NO
-- ...
FROM DEPT_MAIN DM
INNER JOIN VIEW_MPOOL VMP ON VMP.DEPT_ID = DM.DEPT_ID
WHERE CASE
WHEN VMP.EST_PICKUP_DT IS NULL THEN
NULL
ELSE
TRUNC(VMP.EST_PICKUP_DT) = TRUNC(SYSDATE)
END
GROUP BY DM.DESCRIPTION
,DM.DEPT_NO
Copy-paste your GROUP BYs into SELECT fields section.
Step 3: Debug you aggregates, field transformation and renames
Now you have correct SELECT-query but probably not in the shape you want.
Step 4: Debug ORDER BYs
You have correct shape and in last step you need to ORDER BY your data.
If you have decent editor/IDE you can find source of error in 5-10 minutes even in cases of complex queries (and even RDBMS engine bugs)
P.S.
It's better to note which version of RDBMS you are using.
I am trying to select values based on the following case statment
CASE
when ty.type ='Catalog'
and zs.name='Aries'
or zs.name='Leo'
AND ( CASE
when actual_finish_date is not null
then actual_finish_date
when updated_finish_date is not null
then updated_finish_date
else baseline_finish_date
END ) is not null
and visibility.ty_visibility !='Private'
then 1
else 0
END as PARTICIPANT,
Now the problem is it's not checking the entire condition,it's stopping at the first line itself(ty.type='Catalog').
Even when ty_visibility is equal to Private it's selecting the value as 1 instead of 0
Can someone point where I went wrong?
You need to add parentheses to get 'Catalog' and one of the names:
ty.type ='Catalog' and (zs.name='Aries' or zs.name='Leo')
Or switch to IN:
ty.type ='Catalog' and zs.name IN ('Aries', 'Leo')
You can also use COALESCE to simplify the is not null tests:
coalesce(actual_finish_date , updated_finish_date , baseline_finish_date ) is not null
Specify or condition correctly. Hope following will work correct.
CASE
when ty.type ='Catalog'
and (zs.name='Aries'
or zs.name='Leo')
AND ( CASE
when actual_finish_date is not null
then actual_finish_date
when updated_finish_date is not null
then updated_finish_date
else baseline_finish_date
END ) is not null
and visibility.ty_visibility !='Private'
then 1
else 0
END as PARTICIPANT,
Try this.
I tried searching around but couldn't find anything that would help me out.
I'm trying to do this in SQL:
DECLARE #onlyMM INT
SET #onlyMM = 1
SELECT *
FROM cdn.magnag
WHERE CASE #onlyMM
WHEN 1
THEN man_zrdtyp NOT IN (
1616
,2001
)
ELSE - 1
END
I have a problem with:
where case #onlyMM when 1 then man_zrdtyp not in (1616,2001) else -1 end
how to properly make a case for the operator not in?
I think you need to formulate the WHERE clause in a different way. You could use OR instead of case statement. Like this:
WHERE
(#onlyMM=1 AND man_zrdtyp not in (1616,2001))
OR #onlyMM<>1
You don't want to do this?
where (case when #onlyMM = 1 then man_zrdtyp else -1 end) not in (1616,2001)
In production we have 3 shifts. Each Shift timing is described in table tbl_ShiftSched:
WT - work time, PT - break time.
ShiftTmID - schedule for 2 and for 3 shifts.
I am looking for easy way to get work time in minutes having start and end time.
For example, having input between #2015.05.29 06:10:00# and #2015.05.29 09:30:00# and tbl_WorkStations.WksID='GRD' (Workstation code with relation on ShiftTmID ='3P') should give output 190 min.
I have function in MS Access which gives me needed output. But when migrated to T-SQL it becomes very complicated because I do not find easy way how to use alias in T-SQL. Here is the code:
USE [STRDAT]
GO
declare
#strWks varchar(3),
#dteIN datetime='2013.08.05 03:30',
#dteOUT datetime='2013.08.05 05:30',
#strShf varchar(12)=null,--'2013.08.04-3',
#strInd varchar(2) = 'WT',
#dteFTm datetime,
#dteShf date
--#PrdS datetime,
--#PrdE datetime
select top 1
#dteFTm =
case
when #strShf is not null
then (select shiftstart from tbl_ShiftSched where ShiftTmID=(select ShiftTiming from tbl_WorkStations where WksID=#strWks) and shift=right(#strshf,1) and sortind=1)
else #dteIN-dateadd(day,datediff(day,0,#dteIN),0) --CAST(#dteIN-cast(floor(#dteIN) as float) as datetime)
end,
#dteShf=
case
when #strShf is not null
then left(#strShf,10)
else convert(varchar,dateadd(day,datediff(day,0,#dteIN),0),102)
end
--select #dteftm,#dteShf
SELECT tbl_ShiftSched.Shift,
tbl_ShiftSched.SortInd,
[ShiftStart]+
case
when #dteFTm>[shiftstart]
then DateAdd(day,1,#dteShf)
else #dteShf
end AS PrdS,
[ShiftEnd]+
case
when #dteFTm>[shiftend]
then DateAdd(day,1,#dteShf)
else #dteShf
end AS PrdE,
case
when #dteIN>=[PrdS] AND [PrdE]>=#dteOUT
then DateDiff(minute,#dteIN,#dteOUT)
else case
when #dteIN<=[PrdS] AND [PrdE]<=#dteOUT
then DateDiff(minute,[PrdS],[PrdE])
else case
when [PrdS]<=#dteIN AND #dteIN<=[PrdE]
then DateDiff(minute,#dteIN,[Prde])
else case
when [PrdS]<=#dteOUT AND #dteOUT<=[PrdE]
then DateDiff(minute,[Prds],#dteOUT)
else 0
end
end
end
end AS Tm,
#dteIN AS S,
#dteOUT AS E,
tbl_ShiftSched.ShiftType,tbl_ShiftSched.ShiftStart,tbl_ShiftSched.ShiftEnd
FROM tbl_WorkStations
INNER JOIN tbl_ShiftSched ON tbl_WorkStations.ShiftTiming = tbl_ShiftSched.ShiftTmID
WHERE (((tbl_WorkStations.WksID)=#strWks))
Off course it gives me an error Invalid column name 'PrdS' and 'PrdE' because I use alias.
Must be some more easy way to achieve it. Maybe I am on wrong direction?...
Whenever I have to calculate a field and use the results in a second field, I use a common table expression to make the first calculation. Given this query, it could look like this:
with cte_preprocess as
(
SELECT tbl_ShiftSched.Shift,
tbl_ShiftSched.SortInd,
[ShiftStart]+
case
when #dteFTm>[shiftstart]
then DateAdd(day,1,#dteShf)
else #dteShf
end AS PrdS,
[ShiftEnd]+
case
when #dteFTm>[shiftend]
then DateAdd(day,1,#dteShf)
else #dteShf
end AS PrdE,
tbl_ShiftSched.ShiftType,tbl_ShiftSched.ShiftStart,tbl_ShiftSched.ShiftEnd
FROM tbl_WorkStations
INNER JOIN tbl_ShiftSched ON tbl_WorkStations.ShiftTiming = tbl_ShiftSched.ShiftTmID
WHERE (((tbl_WorkStations.WksID)=#strWks))
)
SELECT [Shift]
, SortInd
, PrdS
, PrdE
, case
when #dteIN>=[PrdS] AND [PrdE]>=#dteOUT
then DateDiff(minute,#dteIN,#dteOUT)
else case
when #dteIN<=[PrdS] AND [PrdE]<=#dteOUT
then DateDiff(minute,[PrdS],[PrdE])
else case
when [PrdS]<=#dteIN AND #dteIN<=[PrdE]
then DateDiff(minute,#dteIN,[Prde])
else case
when [PrdS]<=#dteOUT AND #dteOUT<=[PrdE]
then DateDiff(minute,[Prds],#dteOUT)
else 0
end
end
end
end AS Tm
, #dteIN
, #dteOUT
, ShiftEnd
FROM cte_preprocess
More on CTE's here
Im trying to implement some sort of logic on the select statement of the query. I want it so that if no attribute is given, or if the inAttribute is 'NONE'; it will return the date and ALL of the values (compprice, compspread,price,spread,run).
If a value was given to in attribute then i want it to return the value it requested for (Refer to the case statement i tried to do).
Below is my attempt at it, and it is just not working. Any help please?
SELECT
mi.date,
IF inAttribute = '' THEN
mi.compprice,
mi.compspread,
mi.price,
mi.spread,
mi.run
ELSE
CASE inAttribute
WHEN 'CP' THEN mi.compprice,
WHEN 'CS THEN mi.compspread,
WHEN 'MP' THEN mi.price,
WHEN 'MS' THEN mi.spread,
WHEN 'R' THEN mi.run
END
END IF
FROM userValueTable mi
WHERE mi.index_family = inIdxFamily
AND mi.index_id = inIdxId
AND mi.date_>= inStartDate
AND mi.date_<= inEndDate
ORDER by mi.date_ ASC;
Few remarks You can't have variable column list from one line to another. '' is equal to NULL, comparing NULL with equality ( = ) is always false. you can have some fixed number of columns and set value of any column using CASE clause.
Oracle doesn't have an IF for SQL. Use CASE instead - it can act like a C/C#/Java/etc switch - case as you have it in your query, and it can also act like an if.
Also, as mentioned above:
You're stuck with returning a constant number of columns unless you use dynamic SQL
In Oracle, '' is treated as NULL so instead of = '' use IS NULL.
If you don't want to go to Dynamic SQL, you could add a "type" column to your select list and then null out any inapplicable values. Your downstream logic could pick the values to use (or ignore) based on the type. Here's an example:
SELECT
mi.date,
CASE
WHEN inAttribute IS NULL THEN 'inAttrNull'
ELSE 'inAttrNotNull'
END AS RecordType,
CASE WHEN inAttribute IS NULL THEN mi.compprice END AS compprice,
CASE WHEN inAttribute IS NULL THEN mi.compspread END AS compspread,
CASE WHEN inAttribute IS NULL THEN mi.price END AS price,
CASE WHEN inAttribute IS NULL THEN mi.spread END AS spread,
CASE WHEN inAttribute IS NULL THEN mi.run END AS run,
CASE inAttribute
WHEN 'CP' THEN mi.compprice
WHEN 'CS' THEN mi.compspread
WHEN 'MP' THEN mi.price
WHEN 'MS' THEN mi.spread
WHEN 'R' THEN mi.run
END AS SpecialValue
FROM userValueTable mi
... and your WHERE and ORDER BY clauses
You'll get a result set something like this:
RecordType compprice compspread price spread run specialvalue
------------- ---------- ---------- ---------- ---------- ---------- ------------
inAttrNotNull (null) (null) (null) (null) (null) 1234.56
inAttrNull 111.11 222.22 333.33 444.44 555.55 (null)
I know this isn't what you wanted, but it may be something you can work with as an alternative.
There is no IF in Oracle SQL, only in PL/SQL. You have to rewrite it to CASE. The same as you did in your query in ELSE part (you missed a single closing quote after 'CS' THEN...).
SELECT ...
(CASE WHEN inAttribute IS NULL THEN mi.compprice
WHEN .... THEN...
WHEN .... THEN...
...
ELSE ...
END) AS some_column_alias
FROM ...