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.

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 can we use DECODE function in where clause.

Hi Guys,
I have to use DECODE function in where clause.
like below
select * from tab1,tab2
where a.tab1 = b.tab2
and decode(code, 'a','approved')
in this manner its not accepting?
Can any one help me on this or any other aproach?
Thanks
-LKR

>
I am looking for to decode the actual db value something in different for my report.
like if A then Accepted
elseif R then Rejected
elseif D then Denied
these conditions I have to check in where clause.
>
what are you trying to do?
may be you are looking for
select * from tab1,tab2
where a.tab1 = b.tab2
and
   (decode(:code, 'A','Accepted') = <table_column>
    or
    decode(:code, 'R','Rejected') = <table_column>
   or
    decode(:code, 'D','Denied') = <table_column>
   )

Case function in where clause

i insert the below rows in a table cash_book.
PRJ_CODE PRJ_NAME
1203 SHIFA
1203 SHIFA
1203 SHIFA
1202 FATIMA
1202 FATIMA
1203 SHIFA
if i select 1202 code then return 1202 code rows, if i select 1203 then returns 1203 code rows, if i select other than both values then returns all rows. how can i define in one query with use (case or decode function) in where clause ??

perhaps something like this:
create table test
as
select 1200 + rownum prj_code
from dual
connect by level <= 10;
select * from test;
PRJ_CODE
      1201
      1202
      1203
      1204
      1205
      1206
      1207
      1208
      1209
      1210
var v_PRJ_CODE number
exec :v_PRJ_CODE := 1200;
select *
from test
where PRJ_CODE = :v_PRJ_CODE
    or 1 = case when :v_PRJ_CODE in (1202, 1203) then 0 else 1 end;
PRJ_CODE
      1201
      1202
      1203
      1204
      1205
      1206
      1207
      1208
      1209
      1210
exec :v_PRJ_CODE := 1203;
select *
from test
where PRJ_CODE = :v_PRJ_CODE
    or 1 = case when :v_PRJ_CODE in (1202, 1203) then 0 else 1 end;
PRJ_CODE
      1203Regards
Martin

How to use between timestamp in where clause

Hi All,
i have a colum column2 of data type timestamp.now i wants to fatch record having between two date of column2.how to use between operator in where condition having column as timespamp'

Hi,
You can use a timestamp literal, or use a function that return a timestamp datatype, here is an example:
(TIMESTAMP 'YYYY-MM-DD HH24:MI:SS.FF')
select * from yourtable where column2 between TIMESTAMP '1997-01-31 09:26:50.12' and systimestampHave a look to the documentation, for example http://download.oracle.com/docs/cd/B19306_01/server.102/b14225/ch4datetime.htm

How to use, Case function and Filter in Column Formula?

Hello All,
I am using case function and also would like to filter value to populate.
Below is showing error :
case
when '@{Time}' = 'Year' then "Time"."Fiscal Year"
when '@{Time}' = 'Quarter' then "Time"."Fiscal Quarter"
when '@{Time}' = 'Month' then FILTER ("Time"."Fiscal Period" USING "Time"."Fiscal Period" NOT LIKE 'A%')
else ifnull('@{Time}','Selection Failed') end
Thanks, AK

when '@{Time}' = 'Month' then FILTER ("Time"."Fiscal Period" USING "Time"."Fiscal Period" NOT LIKE 'A%')I dont think Filter this works here or any other data types except number.
Try to use option Column's->Filter->Advanced->Convert this filter to SQL
If helps mark

How to use Alias Columns in WHERE CLAUSE

Hi ,
I have a query where in there are 2 alias columns, start_date and end_date where in i need to use them in my WHERE clause as start_date < end_date. Please let me know if this is possible. please see the bwlow query
SELECT (GREATEST (MIN (a.start_date_active),
MIN (b.start_date_active),
MIN (c.start_date_active),
d.start_date_active ) start_date ,
LEAST (MAX (NVL (a.end_date_active, b.end_date_active)),
MAX (c.end_date_active),
MAX (b.end_date_active),
NVL (d.end_date_active,'31-DEC-2099')) end_date,
c.terr_id,
a.source_number,
e.resource_id mgr_resource_id,
d.role_relate_id role_relate_id
,g.resource_id
FROM table1 a,
table5 e,
table4 d,
table6 f,
table7 g,
table8 h ,
table2 b,
table3 c,
table9 i
WHERE 1=1
AND b.resource_id = g.resource_id
AND c.terr_id = b.terr_id
AND to_number (c.attribute3) = i.party_id
AND a.source_number = UPPER (e.salesrep_number)
AND d.role_resource_type = 'RS_INDIVIDUAL'
AND e.resource_id = d.role_resource_id
AND d.role_id = f.role_id
AND (a.start_date_active <= b.end_date_active
AND (NVL (a.end_date_active, b.end_date_active) >= b.start_date_active))
AND h.resource_id = a.resource_id
AND UPPER (g.salesrep_number) = h.source_number
GROUP BY a.source_number, c.terr_id, e.resource_id,d.start_date_active,d.end_date_active,d.role_relate_id,g.resource_id
Thanks,
Lakshmi

I did not understand your query but have you tried using the HAVING clause?
HAVING clause allows you to use a "where" like condition for your groupings.
See http://www.techonthenet.com/sql/having.php for some examples.
Sandeep Gandhi

How to use alias name in where clause

Hello,
DECODE (item.inv_type,'OT', (DECODE (item.attribute2, 'STONE', 0, xfer.release_quantity1 * xfer.attribute10)
'FG', (xfer.release_quantity1 * xfer.attribute10)
) matl_val
In the above code matl_val is alias name i need to use that one in where clause as
where matl_val > 0
is this possible or anyother way can anyone help me.

But the point is as you haven't read the documentation you may miss some valuable points about alias and will soon end with another problem.
>
Specify an alias for the column expression. Oracle Database will use this alias in the column heading of the result set. The AS keyword is optional. The alias effectively renames the select list item for the duration of the query. The alias can be used in the order_by_clause but not other clauses in the query.
>
http://download.oracle.com/docs/cd/E11882_01/server.112/e10592/statements_10002.htm#SQLRF01702

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.

Can you use boolean function in where clause

Hi,
I have a boolean function. Is it possible to use it in where clause of query.
Eg;
is_prime(13) returns boolean
select 1 from dual where is_prime(13)

What about something like this
Create or replace function boolret(id number) return boolean as
begin
If id <10 then
return true;
elsif id>10 and id<100 then
return false;
else
return null;
end if;
end;
1 declare
2 id_cat boolean;
3 begin
4 id_cat:= boolret(8);
5 dbms_output.put_line(id_cat);
6* end;
SQL> /
dbms_output.put_line(id_cat);
ERROR at line 5:
ORA-06550: line 5, column 2:
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'
ORA-06550: line 5, column 2:
PL/SQL: Statement ignored
It seems PL/Sql doesn't have any datatype like Boolean,But it handles Boolean like datatype.
Regards
Raj deep.A

How to use a function in select clause

hi gems...good evening...
I want to write a select clause from a function. The scenario is like below:
function parameters
CREATE OR REPLACE FUNCTION FUNCTION_DEMO(p_pid IN NUMBER,
p_bankerNum IN NUMBER,
p_banker_name IN VARCHAR2,
p_business_num IN NUMBER,
p_businesses IN table_typ_businesses)
return table_typ_bankers
as .......
global object and table types
CREATE OR REPLACE TYPE obj_typ_businesses AS OBJECT (businesses NUMBER);
CREATE OR REPLACE TYPE table_typ_businesses AS TABLE OF obj_typ_businesses;
CREATE OR REPLACE TYPE obj_typ_bankers AS OBJECT (banker_num NUMBER(10,0));
CREATE OR REPLACE TYPE table_typ_bankers IS TABLE OF obj_typ_bankers;
The select query
select * from
table(cast(FUNCTION_DEMO(1,
2,
'ALEX',
2,
table(cast(select businesses_id from reference_businesses) as table_typ_businesses) as table_typ_bankers)But it is giving error with Missing expression.
My function is compiled successfully. I just want to make the select query to view the output given by the function i.e the table type "table_typ_bankers".
Please help...thanks in advance..

Hi ,
You can check this and change your code by taking this as an example. I just noted down with simple one input and return as collection type
and how to use/call it in select statement.
SQL> CREATE OR REPLACE TYPE obj_typ_businesses AS OBJECT (businesses NUMBER)
2 /
Type created.
SQL> CREATE OR REPLACE TYPE table_typ_businesses AS TABLE OF obj_typ_businesses
2 /
Type created.
SQL> CREATE OR REPLACE TYPE obj_typ_bankers AS OBJECT (banker_num NUMBER(10,2))
2 /
Type created.
SQL> CREATE OR REPLACE TYPE table_typ_bankers IS TABLE OF obj_typ_bankers
2 /
Type created.
/* Now creating a demo function and just focusing on your one input as collection type */
SQL> create or replace function f11 ( tab_rec IN table_typ_businesses)
2 return table_typ_bankers
3 is
4 t_val table_typ_bankers:= table_typ_bankers();
5 begin
6        dbms_output.put_line('tab_rec count -'||tab_rec.count);
7
8 for i in 1..tab_rec.count
9              loop
10               dbms_output.put_line ('tab_rec value ('||i||')'||tab_rec(i).businesses);
11                       t_val.EXTEND;
12                    t_val(i) := obj_typ_bankers(tab_rec(i).businesses * 12.50);
13              end loop;
14              return t_val;
15 end;
16 /
Function created.
/* To run your function by a select statement */
SQL> SELECT * FROM TABLE(f11(table_typ_businesses(obj_typ_businesses(5),
2                          obj_typ_businesses(12),
3                                         obj_typ_businesses(18))
4                                             ) )
5 /
BANKER_NUM
      62.5
       150
       225
tab_rec count -3
tab_rec value (1)5
tab_rec value (2)12
tab_rec value (3)18Hope this will help you... :)
Thanks!
Ashutosh

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'
)

How to use string operation in where clause of select query

Hello All,
I just want to know how can i write a restriction in select query saying retrive data only begins with name "DE*".
Explaination: If my table has records and names starts with character then i want to write a query to fetch all the records in which names starts with DE*.
Thanks in advance for your quick reply...
Dev.

Hi
In the where clause you need to write like
WHERE NAME LIKE 'DE%'
Regards
Sudheer

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

How to use DATE in the where clause

I need to select list of records from a table where available date is greater than or equal to current date. Below is the table structure and
select query used to get the list of records
CREATE TABLE TEMP (ITEM_ID NUMBER(20),ITEM_NAME VARCHAR2(100),CREATION_DATE DATE,AVAILABLE_DATE DATE);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(1,'ITEM1',SYSDATE,SYSDATE);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(2,'ITEM2',SYSDATE,SYSDATE+10);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(3,'ITEM3',SYSDATE,SYSDATE-10);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(4,'ITEM4',SYSDATE,SYSDATE);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(5,'ITEM5',SYSDATE,SYSDATE+5);
SELECT ITEM_NAME, available_date FROM TEMP WHERE available_date > SYSDATE OR available_date LIKE SYSDATE;I am getting the expected records but i am not able to find a condition where i can use *>=* for date data type, a query like the below one is
not returning expected records
SELECT ITEM_NAME, available_date FROM TEMP WHERE available_date >= SYSDATE ;Edited by: Balaji on Mar 19, 2012 9:13 PM

Hi,
Balaji wrote:
I need to select list of records from a table where available date is greater than or equal to current date. Below is the table structure and
select query used to get the list of records
CREATE TABLE TEMP (ITEM_ID NUMBER(20),ITEM_NAME VARCHAR2(100),CREATION_DATE DATE,AVAILABLE_DATE DATE);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(1,'ITEM1',SYSDATE,SYSDATE);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(2,'ITEM2',SYSDATE,SYSDATE+10);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(3,'ITEM3',SYSDATE,SYSDATE-10);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(4,'ITEM4',SYSDATE,SYSDATE);
INSERT INTO TEMP (ITEM_ID,ITEM_NAME,CREATION_DATE,AVAILABLE_DATE) VALUES(5,'ITEM5',SYSDATE,SYSDATE+5);
SELECT ITEM_NAME, available_date FROM TEMP WHERE available_date > SYSDATE OR available_date LIKE SYSDATE;
Both operands to LIKE are supposed to be strings. Don't try to use a DATE, such as SYSDATE, with LIKE.
I am getting the expected records but i am not able to find a condition where i can use *>=* for date data type, a query like the below one is
not returning expected records
SELECT ITEM_NAME, available_date FROM TEMP WHERE available_date >= SYSDATE ;
It's returning the results I expect.
If you'd say what results you were expecting, someone could help you wite a query to get them.
Assuming 1 second elapses between the time 'ITEM4' is inserted and the time the 2nd query is run, then, at run-time, available_date will be 1 second less than SYSDATE, so it should not be included.
If you want to find rows that are on the same calendar day as SYSDATE, or later, then use
WHERE available_date >= TRUNC (SYSDATE)

How to use case function in where clause

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