( select 0001 item_code, to_date(1997,'yyyy') Yr from dual union all
select 0002 , to_date(1998,'yyyy') from dual union all
select 0003 , to_date(1999,'yyyy') from dual union all
select 0004 , null from dual union all
select 0005 , null from dual)
select count(Yr) from test group by yr
COUNT(YR)
1
1
1
0
But I want the completed year count and non completed year count
The non completed year count should be 2 as there are two null
How I would acheive?
In oracle query can i want find out how many day wise count for a year days (for example how may sundays, mondays, tuesdays, wednesdays ,thursdays,fridays,saturdays) in a given year (we can give the start day of the year and the end day of a year).
example ---------- jan sun-5 mon-4 tue-5 wed-5 thu-5 fri-4 sat-5 feb ------------do--------------------------------- like this for all 12 months at a single query.
Using Oracle 11g...We have a table in our database of data with the following information:
MASTER_RECORD, MEMBER_RECORD, BUSINESS_UNIT, GENDER, DOB (date), age [at time of month_record], MONTH_RECORD (date) [31-MON-YEAR for recorded active month]
The table has ~55 million records. Existing index is only on MASTER_RECORD.There is now a need to create a view which is an aggregate count of member records, grouped by business_unit,gender, age per year. eg:
business_unit, gender, age, month_record, num_of_members -> for every combination unit5, F, 25, 31-JUN-2011, 622 unit3, M, 18, 31-MAY-2011, 573
The view can be created now, but, is not fast enough to be reasonably considered a view. This table is re-created every month from a procedure, so there is flexibility on how it is created. Use interval partitioning by year( something I have not experienced using), create an index on the month_record,then create view.
There is a table with column holding 3 NULL values one each in every record. When a count function is applied to the column with a filter on NULLs,it returns 0 instead of 3.
But when count(*)is applied,expected result is returned. Would be interested in knowing about this strange behavior of NULL/Count.
I'm needing to return results per month counting records that meet a certain criteria. Some months there will be no results but I need to return a zero rather than having that month omitted from the result set.
This is the pre-existing query:
SELECT TO_CHAR(CRSCHED_DATE,'YYYY/MM'), Count(CPMA.RECORDNUMBER) FROM CPMA.CPMA CPMA WHERE (CPMA.CRSCHED_DATE Between TRUNC(ADD_MONTHS(SYSDATE,-12),'MM') And LAST_DAY(ADD_MONTHS(SYSDATE,-1))) AND (CPMA.CHGSTATUS='Duplicate') GROUP BY TO_CHAR(CRSCHED_DATE,'YYYY/MM') ORDER BY TO_CHAR(CRSCHED_DATE,'YYYY/MM')
The results returned are accurate, but any month(s) with no records meeting the specified criteria are skipped in the result set.
I am using left outer join to fetch PRSN_KEY .I need to find null values in B.PRSN_KEY. I am using below query but its giving me 0 count.
select count(*) from ( Select A.PRSN_KEY AS AKEY,B.PRSN_KEY AS BKEY from CD03955P.H_CM_EEST_EEOR A LEFT JOIN CD03955P.H_CM_EEST_EEOR B ON A.PRSN_KEY =B.PRSN_KEY where A.CAT_ID=111 AND A.DATA_SOURCE='PEN_CO' AND B.CAT_ID = 1 and B.DATA_SOURCE ='PEN_EEST' AND B.CAT_CD IN ('ACTIVE','LOA','LOAWP','LOAMLP','LOAMLN') AND B.EFBEGDT < A.EFBEGDT ) where BKEY IS NULL
I am running a GROUP BY query on a few columns of enumerated data like:
select count(*), Condition, Size group by Condition, Size;
COUNT(*) CONDITION SIZE -------- ---------- -------- 3 MINT L 2 FAIR L 4 FAIR M 1 MINT S
Well, let's say I also have a timestamp field in the database. I cannot run a group by with that involved because the time is recorded to the milisec and is unique for every record. Instead, I want to include this in my group by function based on whether or not it is NULL.
For example:
COUNT(*) CONDITION SIZE SOLDDATE -------- ---------- -------- ---------- 3 MINT L ISNULL 2 FAIR L NOTNULL 2 FAIR M NOTNULL 2 FAIR M ISNULL 1 MINT S ISNULL
I want to implement a business rule such as we have for each id at most 1 dat null. So, I've created this unique index on test.
create unique index x_only_one_dat_cess_null on test(id, case when dat_cess is null then 'NULL' else to_char(dat_cess, 'dd/mm/yyyy') end);
insert into test values (1, sysdate); insert into test values (1, sysdate - 1); insert into test values (1, null); insert into test values (1, null); -- ----- insert into test values (2, sysdate); insert into test values (2, sysdate - 1); insert into test values (2, null);
The 4th insert will cause an error and this is what I wanted to implement. OK. Now the problem is that for non-null values of dat, we can't have data like this
because of the unique index (the 2nd and the 3rd row are equal). So just for learning purposes, how could we allow at most one null value of dat and allow duplicates for non-null values of dat.
SQL> Describe Stu_Table Name Null? Type ----------------------------------------- -------- ---------------------------- STU_ID VARCHAR2(2) STU_NAME VARCHAR2(10) STU_CLASS VARCHAR2(10)
now when i try to modify this Stu_id column to not null its give me error.
SQL>ALTER TABLE Stu_Table MODIFY Stu_Id int(3)not null; ALTER TABLE Stu_Table MODIFY Stu_Id int(3)not null * ERROR at line 1: ORA-01735: invalid ALTER TABLE option
and when i try to add new column with not null its also gives me error
SQL> ALTER TABLE Stu_Table add C1_TEMP integer NOT NULL; ALTER TABLE Stu_Table add C1_TEMP integer NOT NULL * ERROR at line 1: ORA-01758: table must be empty to add mandatory (NOT NULL) column
I have 8 columns. Some of them might be null.I want to display all 8 columns in my result. Not null columns will be first and null at the end.Here is a sample data :
i am sure it may be wrong because it doesn't mention year however i have been told to get a list of all students who enrolled in MAY. and i have tried doing
select * from table where enrolDate > to_date('01-05','DD-MM') and enrolDate < to_date('31-05','DD-MM') and it doesnt work (says no rows selected when in fact there are some rows!
i can do it fine when using YEAR ie '01-05-2000','DD-MM-YYYY' another problem.
I am trying to do this:
Select to_char(to_date(01012008,DD-MM- YYYY),DAY) from dual;
and it is giving me the error however if i do this:
Select to_char(to_date(16012008,DD-MM-YYYY),DAY) from dual;
I got a table with a date-typed column called: "Birth_date", and I wanna write a function that retrieves all the records that "got a birthday" this week.
in order to check weather a record got a birthday this week I need to check only the day & month of "Birth_date" that BETWEEN (sysdate-7) AND (sysdate),
difference between count(1) and count(*). As i know count(*) will give number of rows irrespective of null and count(1) will not count the null.My Oracle version is 10 g.
SQL> select * from t1;
A B C ---------- -------------------- -------------------- 1 2 3 2 5
SQL> select rownum,a.* from t1 a;
ROWNUM A B C ---------- ---------- -------------------- -------------------- 1 1 2 3 2 2 3 5 4 [code]....
I have a table in which years are stored in the form '2008/2009'. This is making it very difficult for me to do any calculations on that field and so I was wondering if there was a way to change the years (in a query and not in the actual table) so that if the year was '2008/2009' I would have just '2009'.
select inv_dtime where inv_dtime between trunc(sysdate,'YYYY') and last_day(trunc(sysdate,'YYYY')) from temp;
I want to have the start date of the year and end date of the year in my condition. like between 01-JAN-2012 AND 31-DEC-2012. I tried the above but it doesn't come.
Query 1: SELECT DISTINCT YR FROM( SELECT TO_CHAR( ADD_MONTHS (TRUNC (TO_DATE('01/01/2007' ,'DD/MM/YYYY'), 'YYYY'), 1*LEVEL -1) , 'YYYY') YR FROM Dual CONNECT BY LEVEL <= MONTHS_BETWEEN(TO_DATE(:to_dt ,'DD/MM/YYYY'), TO_DATE('01/01/2007' ,'DD/MM/YYYY')) + 1 ORDER BY YR )
Gives the Output as YR **** 2007 2008 2009 2010 2011
Query 2 ******* SELECT DISTINCT MONTH FROM( SELECT TO_CHAR( ADD_MONTHS (TRUNC (TO_DATE('01/01/2007' ,'DD/MM/YYYY'), 'MM'), 1*LEVEL -1) , 'MM') MONTH FROM Dual CONNECT BY LEVEL <= MONTHS_BETWEEN(TO_DATE(:to_dt ,'DD/MM/YYYY'), TO_DATE('01/01/2007' ,'DD/MM/YYYY')) + 1 ORDER BY MONTH ) Gives the Output as
I had to get a query to give me all the Mondays of a IW week in a year. I think as per the IW weeks there are around 52.1 weeks in a year. So basically, I want the starting Monday of every week. I would then store those values in a variable and use them in APEX as column headers. Online I saw some samples not related with this, but where looping was done using the all_objects. Not sure if that is the right approach.
The problem is since this is not stored in any table, how can I loop like 52/53 times such that the output shows all the Mondays (date format) for a given year. Basically, the output would be 52/53 rows with a date(Monday of the week).
