SQL & PL/SQL :: Find Maximum Value Within A Group For Corresponding Types
Oct 25, 2010
Test data for the problem is as follows.
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE 10.2.0.4.0 Production
TNS for 64-bit Windows: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
SQL> with t
2 as
3 (
4 select 1 id, 12 compid, 1 rel_type, null enddt from dual union all
5 select 1, 13, 1, to_date('31.12.1993','dd.mm.yyyy') from dual union all
6 select 1, 14, 1, to_date('12.06.1996','dd.mm.yyyy') from dual union all
7 select 1, 15, 1, to_date('23.04.2003','dd.mm.yyyy') from dual union all
[code].......
I want to find the the latest compid for individual types 1 and 2 only within a list of ids. Latest compid is defined as the compid associated with the latest end date (null is treated as the latest end date).
So in the above example for rel_type = 1, compid : 12 is latest, for rel_type : 2, compid : 6 is latest.
Datatype for the tables are :
Id : Number
compid : Number
Rel_Type : Number
enddt : Date
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Mar 28, 2012
I need to find the maxmimum value in a row, which consists 4 fields.
Columns: field_1, field_2, field_3, field_4
values : 2 , 4, 5, 1
the output should be field_3 =5
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Aug 9, 2010
any inbuilt function available for finding out the maximum value of a column out of a plsql collection.
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Jul 27, 2011
i have inner query result like
Emp status
----- ----------
ram a
ram a
ram b
ram a
i want write a query to find a maximum occurrence of status and update in status column.
result should be
Emp status
----- ----------
ram a
ram a
ram a
ram a
i tried lot of thing but not to go.
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Nov 18, 2011
Need to find out what the maximum number of concurrent logins are over a period of 1 month. We need to do this as we may need to buy more licences.
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May 24, 2008
I have three tables,let's say
table stores
sid | store_name
1 | one
2 | two
3 | three
table products
pid | sid | p_name
1 | 2 | pone
2 | 2 | ptwo
3 | 3 | pthree
table sales
said | sid | pid
1 | 2 | 1
2 | 3 | 1
3 | 2 | 2
4 | 1 | 3
5 | 2 | 2
6 | 3 | 2
7 | 3 | 2
and i want display the product that sells best in every store. I try to group by multiple columns counting how many times each product was sold in every store, but don't know how to select the one which was best sold (maximal number of times)
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Jan 18, 2013
what are ASMlib devices and how to find the group permission of it ?
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Mar 7, 2013
I'm currently doing migration from Oracle 10gR2 RDF to Oracle 11gR2 Semantic Technology.I followed the steps on the documentation and successfully created the network using the following:
-----
EXECUTE SEM_APIS.CREATE_SEM_NETWORK('rdf_tblspace');
CREATE TABLE rdf_network_trace (id NUMBER, triple SDO_RDF_TRIPLE_S);
--Created SEQUENCE andTRIGGER FOR rdf_network_trace id
[code]....
when I looked at my Node Ids, they were like +635762253807433724+, +6118969225776891730+. The problem is, I am not the one who is assigning Node Ids, They were automatically generated when inserting TRIPLE data to the rdf table.
Did I miss something when I created my network?
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May 21, 2010
how do I count a list of number value eg 1,1,1,1,3,3,6,4 and find the one with maximum number which is 1
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Nov 1, 2013
I'm trying to group sets of data based on time separations between records and then count how many records are in each group.
In the example below, I want to return the count for each group of data, so Group 1=5, Group 2=5 and Group 3=5
SELECT AREA_ID AS "AREA ID",
LOC_ID AS "LOCATION ID",
TEST_DATE AS "DATE",
TEST_TIME AS "TIME"
FROM MON_TEST_MASTER
WHERE AREA_ID =89
AND LOC_ID ='3015'
AND TEST_DATE ='10/19/1994';
[code]....
Group 1 = 8:00:22 to 8:41:22
Group 2 = 11:35:47 to 11:35:47
Group 3 = 15:13:46 to 15:13:46
Keep in mind the times will always change, and sometime go over the one hour mark, but no group will have more then a one hour separation between records.
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Jun 23, 2011
I read that rownum is applied after the selection is made and before "order by". So, in order to get the sum of salaries for all employees in all departments with a row number starting from 1, i wrote :
select ROWNUM,department_id,sum(salary) from employees group by department_id
If i remove rownum, it gives the correct output. Why can't rownum be used here ?
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May 17, 2011
Refer to the txt file to create table and insert data.
I executed the following query-
SELECT priority, detail, COUNT(1) FROM TEST GROUP BY priority, detail
and got the following result-
PRIORITYDETAIL COUNT(1)
StandardPatch 27
StandardInitial TSS 1
StandardInitial development 10
StandardProduction deployment5
High PriorPatch 1
Now I want that Initial TSS and Initial development should be combined as Initial together and I should get the result as follows:
PRIORITYDETAIL COUNT(1)
StandardPatch 27
StandardInitial 11
StandardProduction deployment5
High PriorPatch 1
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Feb 17, 2012
I have two Oracle instances, both are 10.2.0.3..Executing the following results in two different results:
select N'Test" "result" from dual;
On one the output is:
resu
----
Test
and on the other the output is
result
----------------
Test
This seems to suggest that one is returning "Test" as a char(16) and the other as a varchar2 or nvarchar2. In both cases, NLS_CHARACTERSET is WE8ISO8859P1 and NLS_NCHAR_CHARACTERSET is AL16UTF16.
Not being an Oracle DBA, I am not sure where to look.
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Jun 15, 2010
What are the various collection types available in Oracle 9i.
Mention the differences between them.
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Nov 11, 2011
I read about many indexes as B tree index, function based index,Bitmap Index etc.how many types of Index are there in Oracle and what are they? wat are the categories and sub category? when to use what?
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Jul 12, 2012
How many different types of indexes we have in oracle?
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Jan 23, 2011
Send all type of matrix report with examples.
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Sep 26, 2011
Types of oracle index in detail. consider this situation, if a select query without any where clause takes much time to get data,then we will create index for that table.
Now again run the same select query. this time, whether the query takes much time again or will it work fast? whether the index is used for a select query execution or not?
How we can confirm that whether the oracle using the index normally?
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Nov 8, 2012
set server output on;
DECLARE
num number(1) :=1;
num2 number(1) := 1;
BEGIN
WHILE num < 5 LOOP
[code]...........
the output for this loop is:
1+1=2
2+2=4
3+3=6
4+4=8
this is what I wanted. Both variables are incrementing together. However, when I try to use a FOR loop to do the same thing:
set serveroutput on;
DECLARE
num number(1) :=1;
num2 number(1) := 1;
BEGIN
FOR i in 1..4 LOOP
[code].......
I get the result:
1+1=2
1+2=3
1+3=4
1+4=5
2+5=7
2+6=8
2+7=9
2+8=10
3+9=12
DECLARE
*
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: number precision too large
ORA-06512: at line 8
I understand the output means the inner loop is running its course before the outer loop is started and then continuing on to exceed its limit, but I don't understand why this is or how to make it so I get the same results as the WHILE loops.
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Jul 7, 2011
I have four employee types such as 'C' for consultants, 'S' for staffs, 'W' for workers ,, ('E','S','W') for all types of employees. i have write four queries for showing four types of employees. can it is possible in a single query.
I have written this in oracle forms . I have taken a list item for workers i have taken 'W' , for staffs i have taken 'S' , for consultants i have taken 'C' and for all i have taken 'A'. my column name is emp_type in( :block.list_item ) but it is not taking the value from the list item when the value is emp_type in('C') etc etc..
like this for workers ,staffs . when it is 'A' it will take emp_type in ('E','S','W')
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Dec 5, 2010
All nodes in RAC environment are available.But sessions are not load balanced for one/some of them.
Checking alert log the following oracle errors can be found:
alert_<INSTANCE>.log
ORA-21779: duration not active
ORA-06512: at line 1
The root cause of the problem is SMON that is not clearning up some transient types.
I've noticed this effect in Oracle 11g release 1, but there is a chance it happens for early Oracle versions.
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Mar 3, 2012
how to display REFS from within a REF. I've not used my exact code here as its quite a big file so i've made a similar scenario to get me point across. Here is the code first:
1 CREATE OR REPLACE TYPE object1 AS OBJECT (
2 object_id NUMBER(5),
3 object_name varchar2(10),
4 object_added DATE);
5 /
6 CREATE TABLE object1_tab OF object1 (object_id PRIMARY KEY);
7 /
8 INSERT INTO object1_tab
9 VALUES (1,'Daniel',sysdate);
10 /
11 show errors;
12 /
13 CREATE OR REPLACE TYPE object2 AS OBJECT (
14 object_id NUMBER(5),
15 object_job varchar2(10),
16 object1_ref REF object1 );
17 /
18 CREATE TABLE object2_tab OF object2(object_id PRIMARY KEY);
19 /
20 INSERT INTO object2_tab
21 VALUES (1,'Developer',(SELECT REF(p) FROM object1_tab P
22 WHERE VALUE(p).object_id = &object_id));
23 /
24 select DEREF(object1_ref)
25 FROM object2_tab;
26 /
27 CREATE OR REPLACE TYPE object3 AS OBJECT (
28 object_id NUMBER(5),
29 object_location VARCHAR2(20),
30 object2_ref REF object2);
31 /
32 CREATE TABLE object3_tab OF object3 (object_id PRIMARY KEY);
33 /
34 INSERT INTO object3_tab
35 VALUES (1,'New York',(SELECT REF(p) FROM object2_tab P 36 WHERE VALUE(p).object_id = &object_id));
37 /
38 show errors;
39 /
40 select object_id,object_location,DEREF(object2_ref)
41 FROM object3_tab;
42 /
As yot can see in the code each object refernces from the previous. When I view the DEREF in the third table (object3_tab) i get the following output:
OBJECT_ID OBJECT_LOCATION DEREF(OBJECT2_REF)
--------- -------------------- ----------------------------------
1 New York [SANTA.OBJECT2]
Contained within the object2 is the following:
SANTA.OBJECT2(1,'Developer','oracle.sql.REF@c4cb4aa6')
How would i view the ref for object1 within object3? I will also need to be able to verify the data in these REF in the new table they are used in.
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Mar 4, 2013
need to use Extend() in nested tables in Oracle? What could be the problem if I do not use this method in my code?
I have a nested collection type (TABLE OF VARCHAR2(32)) declared in my package. My stored procedure takes the TABLE type as input and inserts that data into a database table.
I see that my code works fine without using EXTEND method.
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Jun 1, 2013
I'm trying to determine why subtype creation is not working in 11G R2 XE, while it works in 11G R2 EE.
Environment is XE 11.2.0.2 on Windows 7 X64 (yes, not supported but I don't have anywhere else to try this).
Here is a test case, using the SYSTEM account as that is what the developers use (yes, terrible practice) :
--type
-- this works, creates the type
CREATE OR REPLACE TYPE [schema].prod_type AS OBJECT (
pid INT,
pprice NUMBER,
MEMBER PROCEDURE display(pid IN NUMBER))
NOT INSTANTIABLE NOT FINAL;
[code]....
I've tried adding the schema name after UNDER, e.g. UNDER [schema].prod_type with the same result.
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Aug 21, 2013
How to eliminate duplicates from record types?Below code errors out with "Wrong number of arguments in call to MULTISET...."
error. DeclareTYPE ln_x_tab IS RECORD(x1 number ,x2 VARCHAR2(4000) ,x3 VARCHAR2(4000) ,x4 VARCHAR2(4000) ,x5 VARCHAR2(4000)); TYPE ln_x_type IS TABLE OF ln_x_tab INDEX BY BINARY_INTEGER; ln_x1 ln_x_type; ln_dist_x1 ln_x_type; gc_stmt varchar2(4000); Begin gc_stmt := ' SELECT x1, x2, x3, x4, x5 FROM table WHERE dynamic_conditions; EXECUTE IMMEDIATE gc_stmt BULK COLLECT INTO ln_x1; ln_dist_x1:= ln_x1 MULTISET UNION DISTINCT ln_x1; End;
I need ln_dist_x1 to have distinct records from table.
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Apr 9, 2012
I'm trying to call a custom made PL/SQL function in a SQL query. I want to supply the values of the parameters during the query. I can call the function if I "hard code" the parameter values, but when I try to supply them I get the ORA-06553 error.
This call works:
select pkg_tm_import_util.wb_screen_hr_refresh_func('','','','','','','','','','','','') from dual
However, this does not, but should be the same as the call that works:
select pkg_tm_import_util.wb_screen_hr_refresh_func(
''''','||
''''','||
''''','||
''''','||
''''','||
''''','||
''''','||
[code]....
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Jul 11, 2011
i am getting PLS-00306: wrong number or types of arguments in call to 'SECURITY_AUDIT_DTL_TYPE' error below code.
CREATE OR REPLACE PROCEDURE load_data_audit_trail_dtl
AS
TYPE security_type IS TABLE OF SECUIRTY%ROWTYPE
INDEX BY PLS_INTEGER;
security_type_var security_type;
[code]....
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Mar 1, 2010
I am a programmer in Oracle PL / SQL in Oracle 10g I'd like to use the same time on one Database two types of fonts English and Russian (Cyrillic). Is this possible and how? NLS_LANG ?
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Oct 17, 2013
I am using 11.2 DB. I have created 2 object types. The contact_t has been embedded into the student_t object and I have created a view with the nested object.How do you select the values from the contact_t object type in SQL from the view? i want to see the values of the contact_t object in speerate fields (ie. contact_name, city, state...)
CREATE OR REPLACE TYPE contact_t AS OBJECT ( dcid NUMBER(10), contact_name VARCHAR2(50), city VARCHAR2(50), state VARCHAR2(10), zip VARCHAR2(10), email VARCHAR2(100) )
CREATE OR REPLACE
[Code]....
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Oct 24, 2011
When I try to run: select xa_time_cnv.utc_to_loc(sysdate ,('yyyy/mm/dd hh24:mm:ss') ) Fecha from dual; This message appears:
ORA-06553: PLS-306: wrong number or types of arguments in call to 'UTC_TO_LOC'
the function is:
/* utc_to_loc
** Purpose: utc_to_loc is a function written to convert a utc time, to the local time zone.
*/
FUNCTION utc_to_loc(utc_datetime in DATE) return DATE IS
CURSOR c_get_utc_offset(utc_datetime DATE) IS
SELECT Offset FROM TimeTran WHERE
utc_datetime BETWEEN UTCStart and UTCStop;
[code]...
My database is on GMT -3 and I try to view convert UTC-TO LOCAL.
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