SQL & PL/SQL :: Difference In Number Of Records In GROUP BY And PARTITION BY
Feb 17, 2012
If I run the following query I got 997 records by using GROUP BY.
SELECT c.ins_no, b.pd_date,a.project_id,
a.tech_no
FROM mis.tranche_balance a,
FMSRPT.fund_reporting_period b,
ods.proj_info_lookup c,
ods.institution d
WHERE a.su_date = b.pd_date
AND a.project_id = c.project_id
AND c.ins_no = d.ins_no
AND d.sif_code LIKE 'P%'
AND d.sif_code <> 'P-DA'
AND a.date_stamp >='01-JAN-2011'
AND pd_date='31-MAR-2011'
GROUP BY c.ins_no,
b.pd_date,
a.project_id,
a.tech_no;
I want to show the extra columns a.date_stamp and a.su_date in the out put so that I have used PARTITION BY in the second query but I got 1079 records.
SELECT c.ins_no, b.pd_date,a.date_stamp,a.su_date, a.project_id,
a.tech_no,
COUNT(*) OVER(PARTITION BY c.ins_no,
b.pd_date,
a.project_id,
a.tech_no)c
[code]....
why I got 1079 records.how to show the two extra columns in the out put whcich are not used in GROUP BY clause.
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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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Apr 12, 2010
needed in stored procedure to achieve this...how to get this..(stored procedure)
table:
studentid,sname,partitonid
901,x,null
902,y,null
903,z,null
904,p,null
905,q,null
906,a,null
907,b,null
908,d,null
909,f,null
910,m,null
For the above data set i need to divide into 5 partittions and need to updated the partitonid with the partition number for each partition set,like the below result set
studentid,sname,partitonid
901,x,p1
902,y,p1
903,z,p2
904,p,p2
905,q,p3
906,a,p3
907,b,p4
908,d,p4
909,f,p5
910,m,p5
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Sep 14, 2012
below is the create and insert script.
create table sal_group (g_id number(10),sal_rand number(20));
/
INSERT INTO sal_group values(1,5000)
/
INSERT INTO sal_group values(1,2000)
/
INSERT INTO sal_group values(1,4000)
[code]...
/I have tried
SELECT g_id,sal_rand,
case when row_number() over (order by g_id) = count(*) over () then 'yes' else null end as row_check
FROM sal_group output:
G_ID SAL_RAND ROW_CHECK
1 4000
1 2000
[code]....
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Nov 11, 2010
I am using compress partition for a large table.During the process I have used the below command for compress---
1. ALTER TABLE <TABLE_NAME> MODIFY PARTITION P1 COMPRESS;
However I found there are different command as below:-
2. ALTER TABLE <TABLE_NAME> MOVE PARTITION P1 COMPRESS;
What is the basic difference between these two as the compression is happening for both command.
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Feb 21, 2011
I have written the following PL/SQL procedure to delete the records and count the number of records has been deleted.
CREATE OR REPLACE PROCEDURE Del_emp IS
del_records NUMBER:=0;
BEGIN
DELETE
FROM candidate c
WHERE empid in
(select c.empid
from employee e,
candidate c
where e.empid = c.empid
and e.emp_stat = 'TERMINATED'
);
[code]....
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Dec 19, 2012
I have one table employee where there are 4 fields ,emp_code,emp_locn,emp_job_code,emp_job_desc the problem is i am trying to prepare a group reports based on location and emp_job_code there is a duplication of data in the emp_job_desc ,
For example there is a job_code E2 Which has two different job_descriptions for two different employees like E2-PAINTER-SPRAY, E2- PAINTER -SPRAY, another example is E1-rigger , E2-RIGGER and so on.Is there a method to match them together as one description.
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Jun 22, 2010
My duplicate records have been detected by First Name, Last Name, Name, and City.
such as
select FirstName, LastName, Name, City, count(*) as Num of Duplicate from TABLE
GROUP BY FirstName, LastName, Name, City
having count (*) > 1
It gives the duplicate record. Now I need all the columns and the each duplicate record in the select, so I can see why these records are duplicate.
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Jun 16, 2011
this is the case:
Table 1
c1 c2
1 null
2 null
3 2
[code]...
I need to select n records where c2 is null but only from one partition.In example :
In P1 (1,2,3,4)
In P2 (5,6,7)
If n = 4 --> Must be retrieve 1,2,4 because 6 is in P2.
What I tried is
(select c1 from T1 where c1 is null and rownum<=4)but retrieve 1,2,4,6 and I only need the retrieved data from P1 partition.
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Aug 31, 2012
I have a table with with 2 colums serialnumber and brand .
each brand may have multiple serialnumber .
I want to extract 10 serialnumber for each brand .
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Jun 15, 2012
I have Leave Balances In such Format
EMP_COD CategoryJON_DTE LEV_BAL
3900000385101/02/200760
3900002678107/01/200840
Now I want to Separate it into Three and Two Partitions Year Wise.
Like this
3900000385101/02/200720 2012
3900000385101/02/200720 2011
3900000385101/02/200720 2010
3900002678107/01/200820 2012
3900002678107/01/200820 2011
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Dec 7, 2010
I have Table Data in format :-
--------------------------
ABC
ABC
ABC
XYZ
XYZ
and i have a requirement where I need the output in this format.
-------------
ABC 1
ABC 2
ABC 3
XYZ 1
XYZ 2
what query to be used for this
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Jun 18, 2012
I have table which contains huge data. around 12 lakhs records. when I use sum function on accountname and docdate it gives wrong value. once I restart the server it gives the correct value. one or two days it gives correct value after that again I get the same problem. If I restart again it gives correct value.
I use Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 64 bit server on Linux.
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Oct 20, 2012
I can't understand >>
1. Number 2 is less than number 100,
2. string '2' is greater than string '100'.
>> Numbers are ordered by numerical value; strings are ordered by alphabetical value. >>
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Jan 2, 2013
I am trying to write a single SELECT statement that groups at 2 levels of aggregation (using grouping sets) and assigns row numbers (to rank each item) that are partitioned at the correct level for each grouping set. I have the grouping sets figured out but I can't find a way to make Partition By match each level of aggregation.
What I am looking for (in a single SELECT statement) is logically equivalent to:
SELECTweek
,region
,NULL as country
,item
,SUM(qty)
,ROW_NUMBER OVER (PARTITION BY week, region ORDER BY SUM(qty) DESC) as rownumFROM base
GROUP BY week
,region
,item
UNION ALL
SELECTweek
,NULL as region
,country
,item
,SUM(qty)
,ROW_NUMBER OVER (PARTITION BY week, country ORDER BY SUM(qty) DESC) as rownumFROM base
GROUP BY week
,country
,item
I hoped that I could do something like this:
SELECTweek
,region
,country
,item
,SUM(qty)
,ROW_NUMBER OVER (PARTITION BY week, GROUPING SETS (region, country) ORDER BY SUM(qty) DESC) as rownumFROM base
GROUP BY week
,GROUPING SETS (region, country)
,item
But it looks like I am not allowed to partition by grouping sets -- I get the error ORA-00907: missing right parenthesis. I didn't expect it to work but I am not sure how else to partition by multiple levels.
let me know if I could have tagged my code or met other forum standards better.
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Aug 21, 2013
I am having a table employees with columns
1.employee_id
2.department_id
3.hire_date
Display department ID, year, and Number of employees joined?
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Oct 3, 2010
I ve a data in table as follows
code status seqnce Length
B1 AVL 1 10
B2 AVL 2 10
B3 ASG 3 10
B4 AVL 4 10
B5 AVL 5 10
B6 AVL 6 10
B4 ASG 7 10
B4 ASG 8 10
I need to group the AVL status codes with the sum of lengths Ex) B1 to B2 - 20 B4 to B6 - 30 like that.
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Sep 27, 2010
setting up the query/correcting the syntax below so that it calculates the 'number of days difference' between whatever the 'Biggest Date' field value is and whatever the 'current date' is using the 'sysdate'. So far, I've only managed to get the query to calculate the number of days difference (days past due) between the 'need date' and 'estimated delivery date'.
CODESELECT
To_Date(need_date, 'YYYYMMDD') Need_Dt,
To_Date(Case when estimated_delivery > ' ' THEN estimated_delivery ELSE need_date END, 'YYYYMMDD') Biggest_Date,
To_Date(need_date, 'YYYYMMDD') - To_Date(Case when estimated_delivery > ' ' THEN estimated_delivery ELSE need_date END, 'YYYYMMDD') Date_Diff
FROM tableT
WHERE
need_date <= (Case when estimated_delivery > ' ' THEN estimated_delivery ELSE need_date END)
ORDER BY Date_Diff ASC
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Apr 9, 2013
I need the query to calculate minutes from difference of to number fields. Test case is as below.
DROP TABLE tmp;
CREATE TABLE tmp
(
code NUMBER(4),
stime NUMBER(4,2),
otime NUMBER(4,2)
)
LOGGING
NOCOMPRESS
NOCACHE
NOPARALLEL
NOMONITORING;
[code]......
CODE STIME OTIME
---------- ---------- ----------
1065 20 19.49
1082 20 18.57
1279 19.3 18.59
2075 19.3 15.32
Required output is
CODE STIME OTIME HR_MIN MINUTES
---------- ---------- ---------- ------------- --------
1065 20 19.49 00 HR 21 MIN 21
1082 20 18.57 01 HR 03 MIN 63
1279 19.3 18.59 00 HR 31 MIN 31
2075 19.3 15.32 03 HR 58 MIN 238
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Oct 21, 2012
I am confused with third one.
CODE1. >> Comparing two strings >>
SQL> select greatest('99' ,'100') from dual;
GR
99
2. >> comparing both numbers >>
SQL> select greatest( 99 ,100) from dual;
GR
100
3.>> Comparing string and number >>
SQL> select greatest('99' ,100) from dual;
GR
99
whats the logic behind 99 being returned for thirdone.
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Oct 31, 2012
I have two columns Department and EmpName:
Department EmpName
____________________________________
Sales empname1
Sales empname2
Marketing empname3
Development empname4
Now I want to count the number of employees in every department. I want the output to be
Department Total
______________________
Sales 2
Marketing 1
Development 1
I am retrieving names of the department through a subquery
The query I am trying to execute is:
SELECT Department, Employee FROM
( SELECT ...query from other table) AS Department, count( A.EmpName) AS Employee
FROM Employer A, EmployeeInfo B
WHERE (A.EmpID = B.EmpID AND A.EmpCategory like 'Category2')
GROUP BY Department
I know that you cannot group by using aliases and hence a little work around, but still the query isn't working.
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May 28, 2010
i have table with range partition and list sub-partition..can i add one more list sub-partition if it is not possible , i have to drop first sub-partition.
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Mar 9, 2011
I have two sql queries. They run the one after another.
Query 1:
select * from capital
where member_status = 'MEMBER' AND rownum <= 25
order by price desc
Query 2:
select * from capital
where member_status = 'MEMBER' AND rownum > 26
order by price desc
Question is, in the query 2 I want records greater than row number 25. In query 2, I don't want the records that were fetched in Query 1. Is there any way to do this without using rownum?
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Feb 24, 2012
I have the following requirement.
Data from table 1 is printed first and after every X number of rows another set of data either from the same table or a different table needs to be printed.
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Jan 30, 2013
I know how to use cursors to read all the records in a table.
But how can records that should be processed together be read in a loop, using cursors?
If there were, for instance persons from different nationalities, French, German, English, ..., I woluld like to read the first unknown number of persons from France and process that data, and then continue with the unknown number of germans and process that, and so on.
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Mar 4, 2010
using the sql statement in SQL server. I noticed some of the sql syntax are different. My sql statement is as below;
---Select fieldA, Sum(fieldB+fieldC) as fieldD, fieldE, fieldF from TableA group by fieldA, fieldE, fieldF ---
the output will be as below;
fieldA fieldD fieldE fieldF
------ ------------- ------ ------
fieldA fieldB+fieldC fieldE fieldF
However, I need to have the total of no of records displayed for the sql statement and I need it in one sql statement with the one above so that I can display the total no of records along with the information for each field.
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Oct 18, 2012
We have a package that processes(Insert and Update) set of records and runs in loop.
Package is working fine when we set number of records to 300 for each loop and commit. when we increase the number of records to 1000, package is getting stuck(Not ending and not coming out of loop).
Is there any DB parameter to be changed in my environment to process more number of records at at time?
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Nov 30, 2010
is there any way other than this way to retrieve the number of record displayed in the block ?
last record ;
l := :system.cursor_record
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Jul 8, 2012
In form i call a record from database table through execute_query. i have lov on ITEM_NO
i want to display on that form, no. of records of ITEM_NO which i select from the list. like if i have 10 records with item_no which i select from list is must show 1/10.
if i press the down arrow it should show next record of the same item_no.
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Oct 16, 2012
MY problem is in my reports i wish to have filter number of records on my requirement , when i call reports from form then ask me that how many number of records you want..
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