Using :case when in where clause

Hello,
I need some help with using of case statement in a where clause
Table that contains info about employees taking some coursework:
Class (values could be SAP, ORACLE, JAVA)
Code (if Class is SAP then CODE is not null; if class is any other CODE is NULL)
Start Date (date they began class not null)
End Date (date then ended the class - could be null)
Employee Level(numbers from one through five)
I need a single LOV in forms that should show Employee_Level for input class,code,date.
How to do this?
I started off with this but get 'missing statement error'
select distinct employee_level from e_course
   where (
   case when &class='SAP' then code ='1' and start_date > to_date('20000101','YYYYMMDD') and
                                           end_date < to_date('20000101','YYYYMMDD')
           else
               null
   end) order by employee_level;Thanks

Hi,
user469956 wrote:
But all these examples have only one condition for each case.Depending on how you count, all WHERE clauses have only one condition.
I see an example in that thread that has 6 atomic conditions, linked by AND and OR.
I need to check date & code. This is what is causing the error.Why do you want to use a CASE statement?
Why can't you put all your conditions directly iinto a WHERE clause, soemthing like this:
WHERE   (   &class='SAP'
        AND code ='1'
OR      (   start_date > to_date('20000101','YYYYMMDD')
        AND end_date    < to_date('20000101','YYYYMMDD')
        )I said "something like this" because I don't know what you really want to do.

Similar Messages

How to use CASE stmt in Where clause

Hi,
How to use CASE stmt in WHERE clause?. I need the code. Please send me as early as possible..........

Hi,
1004977 wrote:
Hi,
How to use CASE stmt in WHERE clause?. There's no difference between how a CASE expression is used in a WHERE clause, and how it is used in any other clause. CASE ... END always returns a single scalar value, and it can be used almost anywere a single scalar expression (such as a column, a literal, a single-row function, a + operation, ...) can be used.
CASE expressions aren't needed in WHERE clauses very much. The reason CASE expressions are so useful is that they allow you to do IF-THEN-ELSE logic anywhere in SQL. The WHERE clause already allows you to do IF-THEN-ELSE logic, usually in a more convenient way.
I need the code.So do the peple who want t help you. Post a query where you'd like to use a CASE expression in the WHERE clause. Post CREATE TABLE and INSERT statements for any tables used unless they are commonly available, such as scott.emp). Also, post the results you want from that sample data, and explain how you get those resuts from that data.
See the forum FAQ {message:id=9360002}
Please send me as early as possible..........As mentioned bfore, that's rude. It's also self-defeating. Nobody will refuse to help you because you don't appear pushy enough, but some people will refuse to help you if you appear too pushy.

How to use case function in where clause

Hi,
Suppose a table DEMO has columns
DEMO TABLE
user_id
user_name
location
In this table i have 15 users. but out of 15 users i want to use only 5 users for passing as user_name.
then how to achieve the result
1. when i pass the particular 5 user_name in where clause then i should get all the user_name and for other 10 users it will show only the passing user_name.
how to use case function

Do you mean this ?
SQL> var name varchar2(10)
SQL> exec :name := 'ALLEN'
PL/SQL procedure successfully completed.
SQL> select ename from emp where case when :name in ('SMITH','ALLEN') then ename
2 else :name end = ename;
ENAME
SMITH
ALLEN
WARD
JONES
MARTIN
BLAKE
CLARK
SCOTT
KING
TURNER
ADAMS
JAMES
FORD
MILLER
14 rows selected.
SQL> exec :name := 'SMITH'
PL/SQL procedure successfully completed.
SQL> select ename from emp where case when :name in ('SMITH','ALLEN') then ename
2 else :name end = ename;
ENAME
SMITH
ALLEN
WARD
JONES
MARTIN
BLAKE
CLARK
SCOTT
KING
TURNER
ADAMS
JAMES
FORD
MILLER
14 rows selected.
SQL> exec :name := 'BLAKE'
PL/SQL procedure successfully completed.
SQL> select ename from emp where case when :name in ('SMITH','ALLEN') then ename
2 else :name end = ename;
ENAME
BLAKERgds.

No output for XML Publisher Report using CASE/DECODE in Where Clause

Hi,
I've a business requirement to modify an existing report which has two input parameters,
-> p_statcode (Closed Status) which can have values 'Y' or 'N'
-> p_overdue (Overdue Flag) which can have values 'Y' or 'N'
The Overdue Flag is an evaluated column having values of Y/N and it is evaluated as follows,
ONTF_MOD_VAL(NVL (
                                     (TRUNC (SYSDATE)
                                      - (TO_DATE (oe_order_lines.attribute18,
                                                  'DD-MON-RRRR')
                                         + TO_NUMBER (fnd_lookup_values.meaning))),
                                     0
                        overdue_flagThe user requirement now is they needs to be a third option for parameter p_overdue called ALL,
passing which the output should include records having
p_statcode is Y ELSE p_statcode is N AND p_overdue is Y OR p_overdue is N
In other words records having both Y and N vlaues for Overdue Flag have to be returned irrespective of the value given to Closed Status.
Original where clause in the Data Definition file is as follows,
WHERE Closed_Status = nvl(:p_statcode,Closed_Status)
                   AND overdue_flag = nvl(:p_overdue,overdue_flag)My modified code is as follows,
WHERE   Closed_Status = NVL (:p_statcode, Closed_Status)
         AND overdue_flag = (CASE
         WHEN :p_overdue = 'Y' THEN 'Y'
         WHEN :p_overdue = 'N' THEN 'N'
         ELSE overdue_flag
         END)
OR
WHERE   Closed_Status = NVL (:p_statcode, Closed_Status)
         AND overdue_flag = DECODE (:p_overdue, 'Y', 'Y', 'N', 'N',overdue_flag)Both approaches have the same problem.
The output is in EXCEL format. The modified query works fine for p_overdue as Y or N but when p_overdue is passed as ALL it returns an empty EXCEL sheet with just the report output column headers.
Any help as to why this is the case ?? What is wrong in my approach ?
Regards,
Vishal

not clear about p_overdue = ALL
which values needed for p_overdue = ALL ?
try smth like
WHERE   Closed_Status = NVL (:p_statcode, Closed_Status)
AND (
   overdue_flag = DECODE (:p_overdue, 'Y', 'Y', 'N', 'N',overdue_flag) and :p_overdue != 'ALL'
   or
:p_overdue = 'ALL' and (overdue_flag = 'Y' or overdue_flag = 'N')
)for overdue_flag which has more then 'Y', 'N' values
if overdue_flag only in ('Y','N') then
WHERE   Closed_Status = NVL (:p_statcode, Closed_Status)
AND (
   overdue_flag = DECODE (:p_overdue, 'Y', 'Y', 'N', 'N',overdue_flag) and :p_overdue != 'ALL'
   or
:p_overdue = 'ALL'
)

Using Case Statement in Where Clause

Hello All,
I wish to conditionally use different columns for retrieving unique row. This will be dependent upon a parameter passed to the Function/Procedure.
The SQL framed looks as below:
+select *+
from Test_Table
where column_1 = <some_value>
and case when p_call_location = 'A' then column_2 like '%ABC%'
when p_call_location = 'B' then column_2 Not Like '%ABC%'
when p_call_location = 'C' then column_3 like '%EFG%'
when p_call_location = 'D' then column_3 like '%IJKL%'
END;
However, I am not sure if this works, as I am getting a Missing Right Paranthesis error. Major hinderance is the depedency on multiple columns, which would need to be referred for particular scenario.
Can somebody please help me with an example or a skeleton of how a query should be formed?
Appreciate an early reply!!!

HI,
i think this may solve your issue...get back to me if u have any qry's on this.
CREATE TABLE Test_Table
(p_call_location VARCHAR2(10),
COLUMN_1 VARCHAR2(20),
COLUMN_2 VARCHAR2(20),
COLUMN_3 VARCHAR2(20))
INSERT INTO Test_Table VALUES('A','COMNVAL','ABC_PER','XXXX');
INSERT INTO Test_Table VALUES('A','COMNVAL','PER','XXXX');
INSERT INTO Test_Table VALUES('B','COMNVAL','ABC_PER','XXXX');
INSERT INTO Test_Table VALUES('B','COMNVAL','PER','XXXX');
INSERT INTO Test_Table VALUES('C','COMNVAL','ABC_PER','EFG_XXXX');
INSERT INTO Test_Table VALUES('C','COMNVAL','ABC_PER','XXXX');
INSERT INTO Test_Table VALUES('D','COMNVAL','ABC_PER','EFG_XXXX_IJKL');
INSERT INTO Test_Table VALUES('D','COMNVAL','ABC_PER','GGG_XXXX');
SELECT * FROM Test_Table WHERE ROWID IN (
select case when p_call_location = 'A' AND column_2 like '%ABC%' THEN ROWID
when p_call_location = 'B' AND column_2 Not Like '%ABC%' THEN ROWID
when p_call_location = 'C' AND column_3 like '%EFG%' THEN ROWID
when p_call_location = 'D' AND column_3 like '%IJKL%' THEN ROWID
END AS KK
from Test_Table
where column_1 = 'COMNVAL');
even u can use the below qry also
select *
from test_table
where column_1 = 'COMNVAL'
and (case when p_call_location = 'A' and column_2 like '%ABC%' then 'VALID'
when p_call_location = 'B' and column_2 Not Like '%ABC%' then 'VALID'
when p_call_location = 'C' and column_3 like '%EFG%' then 'VALID'
when p_call_location = 'D' and column_3 like '%IJKL%' then 'VALID'
else 'INVALID'
END) = 'VALID';
thanks
prasuna.
Edited by: user13820845 on Feb 21, 2011 10:25 PM

Case statement in where clause ??

Hello gurus,
Can we use case statements in where clause ?? Any example will be great!
And also i would like to know, besides CASE and DECODE statements, Is there any way we can use IF ELSE statements in SELECT clause or in WHERE clause ?
Thank you!!

Hi,
user642297 wrote:
Hoek,
Thanks for the reply
Whatever you return from 'then' should match your criteria.I didnt get this part...can you elaborate this part ?? Thank you!!Remember what a CASE expression does: it returns a single value in one of the SQL data types (or NULL).
You're probably familiar with conditions such as
WHERE   col = 1Inthe example above, col could be replaced by any kind of expression: a function call, and operation (such as "d * 24") or a CASE expression, which is exactly what Hoek posted:
where case
         when col = 6 then 1
         when col = 9 then 1
       end = 1;I think what Hoek meant about mnatching was this: since the CASE expression is being compared to a NUMBER, then every THEN clause (as well as the ELSE, if there is one) should return the same data type. You can't have one THEN clause return a NUMBER, and another one in the same CASE expression return a DATE, like this:
where case
         when col = 6 then 1
         when col = 9 then SYSDATE     -- WRONG! Raises ORA-00932: inconsistent datatypes
       end = 1;
By the way, it's rare when a CASE expression really helps in a WHERE clause. CASE is great for doing conitional stuff in places where you otherwise can't (in the ORDER BY clause, for example), but the WHERE clause was designed for conditions.
Hoek was just trying to give a simple example. If you really wanted those results, it would be simpler to say:
where col = 6
or     col = 9and simpler still to say
where col IN (6, 9)

Using case when statement or decode stament in where clause

hi gems..
i have a problem in the following query..
i am trying to use case when statement in the where clause of a select query.
select cr.customer_name || ' - ' ||cr.customer_number as cust_name,
cr.salary as salary
from customer_details cr
where (case when '>' = '>' then 'cr.salary > 5000'
when '>' = '<' then 'cr.salary < 5000'
when '>' = '=' then 'cr.salary = 5000'
else null
end);
the expression in the when clause of the case-when statement will come from UI and depending on the choice i need to make the where clause.
thats why for running the query, i have put '>' in that place.
so the original query will look like this(for your reference):
select cr.customer_name || ' - ' ||cr.customer_number as cust_name,
cr.salary as salary
from customer_details cr
where (case when variable = '>' then 'cr.salary > 5000'
when variable = '<' then 'cr.salary < 5000'
when variable = '=' then 'cr.salary = 5000'
else null
end);
so, in actual case,if the user selects '>' then the filter will be "where cr.salary > 5000"
if the user selects '<' then the filter will be "where cr.salary < 5000"
if the user selects '=' then the filter will be "where cr.salary = 5000"
but i am getting the error "ORA 00920:invalid relational operator"
please help..thanks in advance..

Hi,
select cr.customer_name || ' - ' ||cr.customer_number as cust_name,
       cr.salary                                      as salary
from customer_details cr
where (    v_variable = 'bigger'
       and cr.salary > 5000
   or (    v_variable = 'less'
      and cr.salary < 5000
   or (    v_variable = 'eq'
        and cr.salary = 5000
       )Edited by: user6806750 on 22.12.2011 14:56
For some reason I can't write in sql '<', '>', '='

How to use case when statements in ODI

I need to put conditional logic before DVM look up in ODI. In the expression editor I put the following statement:-
CASE WHEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME='RCS' THEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME=EBIZ_CELL.CELL_DATA
WHEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME='FDC' THEN CONCAT(POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME,POC_JOURNAL_TEMP_SOURCE_TBL.BOOK_CODE)=EBIZ_CELL.CELL_DATA
END
It did not work,
Under Operators ->All Executions, found the error:-
905 : 42000 : java.sql.SQLException: ORA-00905: missing keyword
The description in Session Task contained:-
select
     C1_JOURNAL_TEMPL
from     APPS.POC_JOURNAL_TEMP_SOURCE_TBL POC_JOURNAL_TEMP_SOURCE_TBL, APPS.C$_0POC_JOURNAL_TEMP_TARGET_TB
where
     (1=1)
And (CASE
WHEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME='RCS'
THEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME=C2_CELL_DATA
WHEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME='FDC'
THEN CONCAT(POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME,POC_JOURNAL_TEMP_SOURCE_TBL.BOOK_CODE)=C2_CELL_DATA
END)
Checked the above code in PL/SQL Developer but it gave errors.
In PL/SQL developer tried to check a simple query using case-when but even that is giving errors in the case-when portion.
The query is as follows:-
select phase_code, accounting_period, sum(eff_cc) as BD_Eff_QTD
from prj_detail
where
case POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME
when 'EXT'
then
1
when 'RAC'
then
2
when 'XXX'
then
3
else
end
I would like to know what is wrong with the above code.
Please let me know what is the correct way of using case-when in PL/SQL as well as in ODI.

Your ODI case statement and PL/SQL Case statement both looks confusing.
You are writing case statement under where clause which is not a good practise. If you want to implement logic like-
select a,b,c from <table>
where
when cond^n^ 1 then do 1
when cond^n^ 2 then do 2
then better you seperate your query for each filter and do a union, in other words-
select a,b,c from <table>
where cond^n^ 1
union
select a,b,c from <table>
where cond^n^ 2
If you are writing case staement to retrieve a value/column (EBIZ_CELL.CELL_DATA) then no need to include it under filter.
ODI case for column EBIZ_CELL.CELL_DATA will be:
CASE
WHEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME='RCS'
THEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME
WHEN POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME='FDC'
THEN CONCAT(POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME,POC_JOURNAL_TEMP_SOURCE_TBL.BOOK_CODE)
END
Pl/SQL query-
select phase_code, accounting_period,
case POC_JOURNAL_TEMP_SOURCE_TBL.APPLICATION_NAME
when 'EXT'then 1
when 'RAC' then 2
when 'XXX' then 3
else 'default value' --- (if no else needed then can also remove else part)
end,
sum(eff_cc) as BD_Eff_QTD
from prj_detail
Suggested as per what is understood, hope it helps.
Edited by: 939451 on Jul 5, 2012 12:47 AM
Edited by: 939451 on Jul 5, 2012 12:48 AM

CASE in a WHERE clause : ORA-00905

Hi everyone,
I am trying to use a CASE in a WHERE clause and I got the error ORA-00905: missing keyword. Here is my code :
SELECT id_reserv,
     concat(nom,concat('_',indice)) as nom,
     libelle,
     num_lot,
     resa_keyword1,
     resa_keyword2,
     resa_keyword3,
     resa_keyword4,
     date_creation,
     comm_creation,
     id_util,
     actif,
     id_env_act,
     (SELECT login from utilisateur u where u.id_util=r.id_util) AS nom_util,
     (SELECT nom from environnement e where e.id_env=r.id_env_act) AS nom_env,
     (SELECT count(*) from reserv_comp rc where rc.id_reserv=r.id_reserv) AS nbComp,
     (SELECT count(*) from reserv_modif mc where mc.id_reserv=r.id_reserv) AS nbModif
FROM reservation r
     WHERE r.nom NOT LIKE 'RESERV_LOT_%'
     AND id_util='1'
     AND actif='1'
     AND id_env_act>='-1'
     AND CASE sansdemande
     WHEN true THEN id_reserv not in select id_reserv from demande_livraison where id_env_dep>='-1'
     ELSE id_reserv=id_reserv
     END
     AND nom LIKE '%'
ORDER BY date_creation;
I already looked at the CASE statement and it seems that the syntax is correct, so I'm not sure I can use it in a WHERE clause.
Any help would be nice !
Guich

Hi,
it should be something like this:
AND CASE
WHEN 'false'='true' THEN (select id_reserv from demande_livraison where id_env_dep>='-1')
ELSE id_reserv
     END = id_reserv The subquery should give one row back
But I think it is better to write your query as:
SELECT id_reserv,
     concat(nom,concat('_',indice)) as nom,
     libelle,
     num_lot,
     resa_keyword1,
     resa_keyword2,
     resa_keyword3,
     resa_keyword4,
     date_creation,
     comm_creation,
     id_util,
     actif,
     id_env_act,
     (SELECT login from utilisateur u where u.id_util=r.id_util) AS nom_util,
     (SELECT nom from environnement e where e.id_env=r.id_env_act) AS nom_env,
     (SELECT count(*) from reserv_comp rc where rc.id_reserv=r.id_reserv) AS nbComp,
     (SELECT count(*) from reserv_modif mc where mc.id_reserv=r.id_reserv) AS nbModif
FROM reservation r
     WHERE r.nom NOT LIKE 'RESERV_LOT_%'
     AND id_util='1'
     AND actif='1'
     AND id_env_act>='-1'
     AND
                      ( 'false'='true' and id_reserv not in (select id_reserv from demande_livraison where id_env_dep>='-1')
                      or
                      ( 'true'= 'true' and id_reserv=id_reserv
     AND nom LIKE '%'
ORDER BY date_creation;This coding in SQL something as if a=b then c, else d in the simplest form.
Herald ten Dam
http://htendam.wordpress.com

How to use case when in Select qry?

Hi Friends,
I want to use Case when in Select qry, my situation is like this
SELECT bmatnr blgort bj_3asiz bmat_kdauf b~mat_kdpos
       SUM( ( case when bshkzg = 'S' then bmenge else 0 END ) -
        ( case when bshkzg = 'H' then bmenge else 0 END ) ) AS qty
       INTO corresponding fields of table it_projsal
    FROM mseg AS b
        INNER JOIN mkpf AS a ON bmblnr = amblnr
                            AND bmandt = amandt
    WHERE abudat < '20061201' AND blgort IN ('1050')
      and b~mandt = '350'
    GROUP BY bmatnr bj_3asiz bmat_kdauf bmat_kdpos b~lgor
If we give like this it gives an error.
Please help me, how to use or handle in select qry itself.
Regards
Shankar

this is not a way to select data from the DB tables.
first get all the data from the DB tables then u have to do SUM Ups .
Regards
prabhu

Update multiple rows using CASE WHEN

I have the table ACCOUNT of structure as follow:
ACCOUNT_ID
ACCOUNT_STATUS
004460721
2
042056291
5
601272065
3
I need to update the three rows at once using one SELECT statement such that, the second column will be 5, 3, 2 respectively.
I used the following query but seems there is something missing
UPDATE ACCOUNT
SET ACCOUNT_STATUS = CASE
WHEN ACCOUNT_STATUS = '004460721' THEN 5
WHEN ACCOUNT_STATUS = '042056291' THEN 3
WHEN ACCOUNT_STATUS = '601272065' THEN 2
WHERE ACCOUNT_ID IN ('004460721','042056291','601272065')
My question, is this way correct? if no, can I use CASE WHEN statement and how or I only have choice of using SUB-SELECT to acheive that in one statement?

Hi,
Hawk333 wrote:
I have the table ACCOUNT of structure as follow:
ACCOUNT_ID
ACCOUNT_STATUS
004460721
2
042056291
5
601272065
3
I need to update the three rows at once using one SELECT statement such that, the second column will be 5, 3, 2 respectively.
I used the following query but seems there is something missing
UPDATE ACCOUNT
SET ACCOUNT_STATUS = CASE
WHEN ACCOUNT_STATUS = '004460721' THEN 5
WHEN ACCOUNT_STATUS = '042056291' THEN 3
WHEN ACCOUNT_STATUS = '601272065' THEN 2
WHERE ACCOUNT_ID IN ('004460721','042056291','601272065')
My question, is this way correct? if no, can I use CASE WHEN statement and how or I only have choice of using SUB-SELECT to acheive that in one statement?
What happens when you try it?
Did you mean "WHEN ACCOUNT_ID = ..."?
A CASE expressions always needs an END keyword.
Depending on your requirements (that is, why are those rows being changed, and how do you determine the new values) a CASE expression in an UPDATE statement, similar to what you posted, could be a good way to do it. MERGE (instead of UPDATE) would also be an option, especially if you want to avoid updating rows that already happen to have the correct values.

Using Case When

I have a situation where i need to write a case when sql expression to fetch certain rows from a table.
How to use CASE WHEN THEN ELSE END in a report query ?
Explanation with a simple example will be of great help.
thanks

The javadoc for oracle.toplink.expressions.Expression
contains some information.
The following is an example of how to build the case statement.
This will use case to replace the keys in the caseTable with the values. The default value (the ELSE) is provided as the second argument.
     Hashtable caseTable = new Hashtable(3);
     caseTable.put("Bob", "Bobby");
     caseTable.put("Susan", "Susie");
     caseTable.put("Eldrick", "Tiger");
     Expression expression = builder.get("firstName").caseStatement(caseTable, "No-Nickname").equal("Bobby");

Case satement in where Clause..

Hi I haev issue facing in procedure there are 4 param as in put some time 2 parameter will have value and some time it is null and and one parameter has multiple value . and this value i am passing to cursor and cursor should return value even though value is null so using case satement in where clasue but it is throwing error.
here syntax
SELECT strategicinitiativeid, projectid, -- ltm, ltmdeptid,
YEAR,
SUM (netexpensebudget) netexpensebudget,
SUM (devsoftcapbudget + purchasesoftcapbudget
+ hardwarecapbudget
) AS totalcapbudget,
SUM (netexpensebudgetinprog) netexpensebudgetinprog,
SUM ( devsoftcapbudgetinprog
+ purchasesoftcapbudgetinprog
+ hardwarecapbudgetinprog
) AS totalcapinprogbudget
FROM vpendingprojectsaligntosi
WHERE CASE
WHEN v_projectid IS NOT NULL
THEN projectid IN (v_projectid)
END and case v_SIID is not null
then strategicinitiativeid=v_SIID end
AND budgetstepid IN (v_budgetstepid)
GROUP BY strategicinitiativeid, YEAR, projectid;

user13301356 wrote:
Hi I haev issue facing in procedure there are 4 param as in put some time 2 parameter will have value and some time it is null and and one parameter has multiple value . and this value i am passing to cursor and cursor should return value even though value is null so using case satement in where clasue but it is throwing error.
here syntax
SELECT strategicinitiativeid, projectid, -- ltm, ltmdeptid,
YEAR,
SUM (netexpensebudget) netexpensebudget,
SUM (devsoftcapbudget + purchasesoftcapbudget
+ hardwarecapbudget
) AS totalcapbudget,
SUM (netexpensebudgetinprog) netexpensebudgetinprog,
SUM ( devsoftcapbudgetinprog
+ purchasesoftcapbudgetinprog
+ hardwarecapbudgetinprog
) AS totalcapinprogbudget
FROM vpendingprojectsaligntosi
WHERE CASE
WHEN v_projectid IS NOT NULL
THEN projectid IN (v_projectid)
END and case v_SIID is not null
then strategicinitiativeid=v_SIID end
AND budgetstepid IN (v_budgetstepid)
GROUP BY strategicinitiativeid, YEAR, projectid;may be --untested
SELECT strategicinitiativeid,
       projectid,
       YEAR,
       SUM(netexpensebudget) netexpensebudget,
       SUM(devsoftcapbudget + purchasesoftcapbudget + hardwarecapbudget) AS totalcapbudget,
       SUM(netexpensebudgetinprog) netexpensebudgetinprog,
       SUM(devsoftcapbudgetinprog + purchasesoftcapbudgetinprog +
           hardwarecapbudgetinprog) AS totalcapinprogbudget
FROM vpendingprojectsaligntosi
WHERE projectid in nvl(v_projectid, projectid)
   AND strategicinitiativeid in nvl(v_SIID, strategicinitiativeid)
   AND budgetstepid in (v_budgetstepid)
GROUP BY strategicinitiativeid, YEAR, projectid

Case statement within where clause

How can i write a case statement within Where clause of SQL statement.
Ex:
If sysdate is less than Dec 31 of 2009 then run the query for 2009 else run the query for 2010.
belwo query is not working. Please let me know how can i write a case statement within where clause.
Select * from table
where
Case
when to_char(sysdate,'yyyymmdd')<=20091231 then tax_year=2009
else tax_year=2010
End

Hi,
You can get the results you want like this:
Select *
from      table
where   tax_year = Case
                  when to_char(sysdate,'yyyymmdd') <= 20091231
                  then 2009
                  else 2010
             End
;A CASE expression returns a single value in one of the SQL data types, such as a NUMBER, VARCHAR2 or DATE. There is no boolean type in SQL.

How to use case when function to calculate time ?

Dear All,
May i know how to use case when function to calculate the time ?
for the example , if the First_EP_scan_time is 12.30, then must minus 30 min.
CASE WHEN FIRSTSCAN.EP_SHIFT <> 'R1' AND FIRSTSCAN.EP_SHIFT <> 'R2'
THEN ROUND(CAST((DATEDIFF(MINUTE,CAST(STUFF(STUFF((CASE WHEN SHIFTCAL.EP_SHIFT = 'N1'
THEN CONVERT(VARCHAR(8),DATEADD(DAY,+1,LEFT(FIRSTSCAN.EP_SCAN_DATE ,8)),112) + ' ' + REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,+0,SHIFTDESC.EP_SHIFT_TIMETO + ':00'),108),':','')
ELSE LEFT(FIRSTSCAN.EP_SCAN_DATE ,8) + ' ' + REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,+0,SHIFTDESC.EP_SHIFT_TIMETO + ':00'),108),':','') END),12,0,':'),15,0,':') AS DATETIME),CAST(STUFF(STUFF(LASTSCAN.EP_SCAN_DATE,12,0,':'),15,0,':') AS DATETIME)) / 60.0 - 0.25) AS FLOAT),2)
ELSE ROUND(CAST((DATEDIFF(MINUTE,CAST(STUFF(STUFF(FIRSTSCAN.EP_SCAN_DATE,12,0,':'),15,0,':') AS DATETIME),CAST(STUFF(STUFF(LASTSCAN.EP_SCAN_DATE,12,0,':'),15,0,':') AS DATETIME)) / 60.0) AS FLOAT),2) END AS OTWORK_HOUR

Do not use computations in a declarative language. This is SQL and not COBOL.
Use a table of time slots set to one more decimal second of precision than your data. You can now use temporal math to add it to a DATE to TIME(1) get a full DATETIME2(0). Here is the basic skeleton.
CREATE TABLE Timeslots
(slot_start_time TIME(1) NOT NULL PRIMARY KEY,
slot_end_time TIME(1) NOT NULL,
CHECK (start_time < end_time));
INSERT INTO Timeslots --15 min intervals
VALUES ('00:00:00.0', '00:14:59.9'),
('00:15:00.0', '00:29:59.9'),
('00:30:00.0', '00:44:59.9'),
('00:45:00.0', '01:00:59.9'),
('23:45:00.0', '23:59:59.9');
Here is the basic query for rounding down to a time slot.
SELECT CAST (@in_timestamp AS DATE), T.start_time
FROM Timeslots AS T
WHERE CAST (@in_timestamp AS TIME)
BETWEEN T.slot_start_time
AND T.slot_end_time;
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

Using :case when in where clause

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