Using Case and Joins in update statement
Hi all,
I need to update one column in my table...but need to use case and joins...I wrote the query and it is not working
I am getting an error msg saying...the SQL command not ended properly...
I am not that good at SQL...Please help...
update t1 a
set a.name2=
(case
when b.msg2 in ('bingo') then '1'
when b.msg2 in ('andrew') then '2'
when b.msg2 in ('sam') then '3'
else '4'
end )
from t1 a left outer join t2 b
on a.name1 = b.msg1 ;
Waiting for help on this...!
Thanks in Advance... :)
Another approach is to update an inline view defining the join:
update
( select a.name2, b.msg2
from t1 a
join t2 b on b.msg1 = a.name1 ) q
set q.name2 =
case
when q.msg2 = 'bingo' then '1'
when q.msg2 = 'andrew' then '2'
when q.msg2 = 'sam' then '3'
else '4'
end;which could also be rewritten as
update
( select a.name2
, case q.msg2
when 'bingo' then '1'
when 'andrew' then '2'
when 'sam' then '3'
else '4'
end as new_name
from t1 a
join t2 b on b.msg1 = a.name1 ) q
set name2 = new_name;The restriction is that the lookup (in this case, t2.msg1) has to be declared unique, via either a primary or unique key or unique index.
(You don't strictly need to give the view an alias, but I used 'q' in case you tried 'a' or 'b' and wondered why they weren't recognised outside the view.)
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How can i use multiple row subquery in update statement
Hai All
I using group function in my update statement.. and i need to update more rows so i need to use multiple row
subquery pls tell me how to use multiple row subquery in update statement
For example
while i am using this like this i got an error
update dail_att set outtime in (select max(r2.ptime) from temp_att where empcode=r2.enpno and
barcode=r2.cardn and attend_date=r2.pdate group by enpno,pdate,cardn);
Pls tell me how to use with example
Thanks & regards
Srikkanth.MHai Man
Thanks for ur response Let me clear what i need
First step Fetch the records as text file and stores into table T1
and the next step is i have seperated the text using substring and stores in different columns of a table
There are two shifts 0815 to 1645 and 1200 and 2000
Here I rep IN and O rep OUT
Empno date time inout
001 01-01-10 0815 I
002 01-01-10 0815 I
003 01-01-10 0818 I
001 01-01-10 1100 0
001 01-01-10 1130 I
002 01-01-10 1145 0
002 01-01-10 1215 I
004 01-01-10 1200 I
005 01-01-10 1215 I
004 01-01-10 1315 O
004 01-01-10 1345 I
001 01-01-10 1645 0
002 01-01-10 1715 0
003 01-01-10 1718 0
004 01-01-10 2010 0
005 01-01-10 2015 0
This is my T1 table i have taken data from text file and stored in this table from this table i need to move data to another table T2
T2 contains like this
Empno Intime Intrin Introut Outtime Date
001 0815 1100 1130 1645 01-01-10
002 0815 1145 1215 1715 01-01-10
003 0818 1718 01-01-10
004 1200 1315 1345 2010 01-01-10
005 1215 2015 01-01-10
This what i am trying to do man but i have little bit problems Pls give some solution with good example
And my coding is
declare
emp_code varchar2(25);
in_time varchar2(25);
out_time varchar2(25);
Cursor P1 is
Select REASON,ECODE,READMODE,EMPD,ENPNO,FILL,PDATE,PTIME,INOUT,CARDN,READERN
From temp_att
group by REASON,ECODE,READMODE,EMPD,ENPNO,FILL,PDATE,PTIME,INOUT,CARDN,READERN
ORDER BY enpno,pdate,ptime;
begin
for r2 in p1 loop
declare
bar_code varchar2(25);
begin
select barcode into bar_code from dail_att where empcode=r2.enpno and attend_date=r2.pdate;
For r3 in (select empcode,empname,barcode,intime,intrin,introut,addin,addout,outtime,attend_date from dail_att)loop
if r2.inout ='O' then
update dail_att set outtime =(select max(r2.ptime) from temp_att where empcode=r2.enpno and barcode=r2.cardn and attend_date=r2.pdate group by r2.cardn,r2.enpno,r2.pdate );
end if;
end loop;
exception
when no_data_found then
if r2.inout ='I' then
insert into dail_att(barcode,empcode,intime,attend_date)(select r2.cardn,r2.enpno,min(r2.ptime),r2.pdate from temp_att group by r2.cardn,r2.enpno,r2.pdate );
end if;
end;
end loop;
commit;
end;
Pls tell me what correction i need to do i the update statement i have used a subquery with group function but when i used it will return only one row but my need is to return many rows and i need to use multiple row subquery
and how can i use it in the update statement
Thanks In Advance
Srikkanth.M -
can we use join in update statement?
here is the query which is giving me error
UPDATE pol_int_name_multiple_v
SET PMV.client_seq_nbr_i = 1
FROM pol_int_name_multiple_v PMV
JOIN pol_int_name PIV
ON piv.int_name_id = pmv.int_name_id
WHERE piv.client_id = 5
SQL> /
FROM pol_int_name_multiple_v PMV
ERROR at line 3:
ORA-00933: SQL command not properly ended
Message was edited by:
aadiYes, you can. The table with updateble columns must be a key preserved table. See http://download.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adg03sch.htm#1044
Example:
SQL> CREATE TABLE A(A INTEGER PRIMARY KEY);
Table created.
SQL> INSERT INTO A VALUES(1);
1 row created.
SQL> INSERT INTO A VALUES(2);
1 row created.
SQL> COMMIT;
Commit complete.
SQL> CREATE TABLE B(
2 A INTEGER,
3 B INTEGER,
4 FOREIGN KEY(A) REFERENCES A);
Table created.
SQL> INSERT INTO B(A, B) VALUES(1, 5);
1 row created.
SQL> INSERT INTO B(A, B) VALUES(2, 5);
1 row created.
SQL> INSERT INTO B(A, B) VALUES(2, 10);
1 row created.
SQL> COMMIT;
Commit complete.
SQL> SELECT * FROM B;
A B
1 5
2 5
2 10
SQL> UPDATE
2 (
3 SELECT B.*
4 FROM A JOIN B ON A.A = B.A
5 WHERE B.A = 2
6 )
7 SET B = 333;
2 rows updated.
SQL> COMMIT;
Commit complete.
SQL> SELECT * FROM B;
A B
1 5
2 333
2 333Regards,
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Hi All,
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thanks in advance.
UPDATE dg2.OD_PROJ_LOOKUP_TEMP o
SET Months_In_Stage_Cnt = select Months_In_Stage_Cnt_ret(o.project_id) from dual;
thanks
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CREATE FUNCTION fn_emp_ename (p_empno IN emp.empno%TYPE)
RETURN VARCHAR2
IS
v_ename emp.ename%TYPE;
BEGIN
SELECT ename
INTO v_ename
FROM emp
WHERE empno = p_empno;
RETURN v_ename;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
RETURN NULL;
WHEN OTHERS
THEN
RETURN NULL;
END fn_emp_ename;
SQL>
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
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EMP_NAME
SMITH
ALLEN
WARD
JONES
MARTIN
BLAKE
CLARK
SCOTT
KING
TURNER
ADAMS
JAMES
FORD
MILLER
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2 set ename= fn_emp_ename (7936)
3 where empno=7934;
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SQL> commit;
Commit complete.
SQL> select * from emp where empno=7934;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTN
7934 CLERK 7782 23-JAN-82 1300 1
SQL> i hope this helps .........
Thanks,
P Prakash
Edited by: prakash on Nov 17, 2011 11:52 PM -
How to use case and decode to extract the data
Hello PL/SQL Gurus,
I am using Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production version
I have a table in following format -
drop table TT2;
create table TT2(College, Class,gender,status,fees) as select
'IITB','MBA','M','P',255600 from dual union all select
'IITK','MTech','M','P',300000 from dual union all select
'IITD','MBA','F','P',450000 from dual union all select
'IITKH','MBA','F','P',350000 from dual union all select
'IITC','MTech','F','P',420000 from dual union all select
'IITB','MTech','M','P',185000 from dual union all select
'IITC','MTech','M','P',235000 from dual union all select
'IITD','MBA','F','F',175000 from dual union all select
'IITM','MBA','M','F',257000 from dual union all select
'IITKH','MTech','F','P',335000 from dual union all select
'IITD','MBA','F','P',540335 from dual union all select
'IITC','MBA','F','F',125089 from dual union all select
'IITD','MTech','M','P',290756 from dual union all select
'IITM','MBA','M','P',200000 from dual union all select
'IITKH','MBA','F','F',534990 from dual union all select
'IITD','MBA','F','P',221000 from dual ;some of the extraction conditions are as following -
CASE CONDITION
College in 'IITB' and status='P'- 'WestRegion Passed'
College in 'IITC' and status='P'- 'SouthRegion Passed'
College in 'IITD' and 'IITK' and status='P' and Gender='F' - 'NothRegion Female Passed'
College not in 'IITK' and status='F' - 'Ex Kanpur Failed'
Expected output -
Region Statnding Fees
WestRegion Passed 440460
SouthRegion Passed 655000
NothRegion Female Passed 1386335
Ex Kanpur Failed 1092079SQL Used
I am using the following query which only make sure of case but this is not how i want the output , if i try to use the case within decode then how to work on this -
SELECT (CASE WHEN College in ('IITB') and status='P' then sum(fees) else 0 end) WP,
(case when College in ('IITC') and status='P' then sum(fees) else 0 end) SP,
(case when College in ('IITD','IITK') and gender='F' and status='P' then sum(fees) else 0 end) NFP,
(case when College in ('IITK') and status='F' then sum(fees) else 0 end) ExKF
FROM
TT2
GROUP BY College, Class,gender,statususer555994 wrote:
Thank you so much jeneesh i am really thankful to you ...vov.
one more query in case if any of the selection don't have the output data , then values will be displayed like -One way..
with t as
--"Add all your descriptions
(select 'WestRegion Passed' region_standing from dual union all
select 'SouthRegion Passed' region_standing from dual union all
select 'NothRegion Female Passed' region_standing from dual union all
select 'Ex Kanpur Failed' region_standing from dual)
select region_standing,sum(fees) fees
from (
(SELECT CASE WHEN College in ('IITB') and status='P'
then 'WestRegion Passed'
when College in ('IITC') and status='P'
then 'SouthRegion Passed'
when College in ('IITD','IITK') and gender='F' and status='P'
then 'NothRegion Female Passed'
when College in ('IITK') and status='F'
then 'Ex Kanpur Failed'
else 'Others' end region_standing,
sum(fees) fees
FROM TT2
GROUP BY CASE WHEN College in ('IITB') and status='P'
then 'WestRegion Passed'
when College in ('IITC') and status='P'
then 'SouthRegion Passed'
when College in ('IITD','IITK') and gender='F' and status='P'
then 'NothRegion Female Passed'
when College in ('IITK') and status='F'
then 'Ex Kanpur Failed'
else 'Others' end
union all
select region_standing,0
from t
group by region_standing;
REGION_STANDING FEES
Others 2567835
NothRegion Female Passed 1211335
WestRegion Passed 440600
Ex Kanpur Failed 0
SouthRegion Passed 655000
{code}
Edited by: jeneesh on Nov 5, 2012 5:07 PM -
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gr_empgrp-low = '1'.
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gr_cntrtype-low = '1'.
append gr_cntrtype.
gr_cntrtype-sign = 'I'.
gr_cntrtype-option = 'EQ'.
gr_cntrtype-low = '05'.
append gr_cntrtype.
gr_cntrtype-sign = 'I'.
gr_cntrtype-option = 'EQ'.
gr_cntrtype-low = '09'.
append gr_cntrtype.
gr_cntrtype-sign = 'I'.
gr_cntrtype-option = 'EQ'.
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append gr_cntrtype.
gr_cntrtype-sign = 'I'.
gr_cntrtype-option = 'EQ'.
gr_cntrtype-low = '60'.
append gr_cntrtype.
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Can I have a CASE condition or a CAST condition within an INSERT statement?
For example:
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In addition if you cast to VARCHAR2 you need to specify the length of the VARCHAR2, e.g. VARCHAR2(100).
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Value2,
Value3,
Value4
Select Seq1.nextval Value1,
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or color.grade2 in (6,5,7,8,11,12)
Then
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Else
1
End Value2,
'GREAT' Value3,
CAST(color.client as varchar2(100)) Value4
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