SQL & PL/SQL :: How To Get Count Of Null Values In Left Outer Join
Oct 16, 2012
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
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Dec 3, 2010
I have a scenario where I have to get all the available dates of a resource. I am using the below query to get it.
Select Avail_Date AS MONTH
, Resource_Id
FROM res_tsk
, (SELECT Rownum - 1 + TRUNC (sysdate) avail_date
FROM Dual
[code].......
The result of this is:
Month Dates Resource_ID
12/3/10 0:00 NULL
12/4/10 0:00 NULL
12/5/10 0:00 NULL
12/6/10 0:00 100033868
As I am doing a outer join, if the resource is not available on a particular day the resource_id is coming as NULL as it is not available. Is there any way to populate this NULL resource_id with the original resource_id as the resource_id is same for all the result set.
I need the output to be
Month Dates Resource_ID
12/3/10 0:00 100033868
12/4/10 0:00 100033868
12/5/10 0:00 100033868
12/6/10 0:00 100033868
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Aug 14, 2009
i want to know the difference between Left outer join Vs. Right outer join? Its like which join is safer to use or is there any recommendations to use any join?
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Oct 13, 2010
I have two tables employee_master and employee_time. There could be situation that record from employee_master does not exist in employee_time.
create table employee_master(employee_id number, employee_name varchar2(100));
insert into employee_master values(1, 'employee 1');
insert into employee_master values(2, 'employee 2');
insert into employee_master values (3, 'employee 3');
create table employee_time(employee_id number, project_id number, project_type varchar2(20), time_date date, hours number)
insert into employee_time values(1, 100, 'Billable', '01-Oct-2010', 10);
insert into employee_time values(1, 200, 'Billable', '02-Oct-2010', 9);
insert into employee_time values(1, 210, 'Non Billable', '03-Oct-2010', 10);
insert into employee_time values(2, 100, 'Billable', '01-Oct-2010', 10);
insert into employee_time values(2, 200, 'Billable', '02-Oct-2010', 9);
The requirement is to show all the employees from employee_master and with total billable hours and non billable hours, if not exist, show zero.The output will be:
Employee_ID Employee_Name Total_Billable_Hours Total_Non_Billable
1 Employee1 19 10
2 Employee2 19 0
3 Employee3 0 0
The question is to write a Left outer join query or to write a PL/SQL function which can return total rows if Employee_ID is supplied to it as a parameter
Query 1:
Select Employee_ID, Employee_name, sum(Billable), sum(Non_Billable)
From
(
Select a.Employee_ID, a.employee_name,
decode(b.project_type, 'Billable', hours, 0) as Billable,
decode(b.project_type, 'Non Billable', Hours, 0) as Non_Billable
from employee_master a
left outer join employee_time b on a.Employee_ID=b.Employee_ID
)
Group by Employee_ID, Employee_Name
Query 2:
Select Employee_ID, Employee_Name, func_billable(Employee_ID) as Billable, func_non_billable(Employee_ID) as Non_Billable
From Employee_Master
Which query is good from the performance perspective? In real situation the employee_time is a very huge table.
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Sep 21, 2012
I have the following query but it is taking too much time because of the LEFT OUTER JOIN on HST table which is a huge table , is there an alternative to LEFT OUTER JOIN that can be used to optimize the code:
SELECT HST.COMP_CODE,
HST.BRANCH_CODE,
HST.CURRENCY_CODE,
HST.GL_CODE,
HST.CIF_SUB_NO,
HST.SL_NO,
SUM(CV_AMOUNT) CV_AMOUNT,
[code].....
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Jul 27, 2012
What is the fundamental difference between MINUS keyword and LEFT outer join in Oracle.
I can achieve same results using either one of them.
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Oct 16, 2012
What I am trying to do is get my report to list every room in the table even if there is nothing scheduled in the room for the selected date. I add a command to the report to force the left outer join but I keep running into errors. This is how I have it worded:
SELECT
"ROOM"."ROOM_ID",
"PATIENT_CARE_EVENT"."OR_NUM"
FROM
"ROOM"."ROOM" LEFT OUTER JOIN "PATIENT_CARE_EVENT"."PATIENT_CARE_EVENT"
ON "PATIENT_CARE_EVENT"."OR_NUM"="ROOM"."ROOM_ID" AND "PATIENT_CARE_EVENT"."PROCEDURE_DATE_DT" IN {?Start Date} TO {?End Date}
Someone else suggested that I change the IN/TO wording in the last line to BETWEEN/AND. When I do that it gives me an error stating that the table or view does not exist.
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Mar 22, 2012
these are the sample data :
CREATE OR REPLACE TYPE CourseList AS TABLE OF VARCHAR2(64);
CREATE TABLE department (
courses CourseList)
NESTED TABLE courses STORE AS courses_tab;
INSERT INTO department (courses)VALUES (CourseList('1','2','3'));
[code]....
The query returns the correct data, CourseList that are not subset of any other CourseList of the table.
I am trying to convert this not exists in a left outer join query to check if the performance is better, but I don't know how to do it.
I was making some variations of this code :
select d1.courses c_1, d2.courses c_2
from department d1,department d2
where d1.courses<>d2.courses(+);
but it is now working.
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Jun 17, 2010
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.
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Nov 7, 2011
I am trying to understand "ordered" hint. I want to use it in my sql where I am using some left outer joins. I believe if I use this ordered hint it will be much faster.
But the problem is I am not able to understand the concept of this hint. As i did alot of search on this eveyone says it will be , even I got some similar references where it worked But I am getting contradicting explanation for on this.
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Oct 19, 2013
Lets say I have three tables t1 and t2 and t3.
SELECT * FROM T1;
Id
____
1
2
3
4
SELECT * FROM T2;
Id
____
1
SELECT * FROM T3;
Id
____
1
Now when data exists in T2 and T3, I want to return only the records in T1 that match the records in T2 and T3 which is basically a normal join
select t1.id from t1, t2,t3 where t1.id = t2.id and t1.id = t3.id
However when there are no records in T2 or T3, I want to return all records in T1 i.e 1,2,3,4
One way of doing that is using the not exists clause
select * from t1 where not exists ( select null from t2 where t2.Id != t1.id) and not exists ( select null from t3 where t1.Id != t3.id)
Is there a better way of doing this in sql ?
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Jun 11, 2013
I am observing some skewed results for Left outer join where the main table has NULL in the field we are joining against with another table.
Just wondering if there are some tricks to get over it. I am currently using NVL(tab1.col1,'X') = NVL(tab2.col3,'X') and am just wondering if there is a better way to handle this.
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Apr 9, 2013
I am creating a query where I am trying to take phone call lengths and put them into buckets of length ranges 0:00 - 0:59, 1:00 - 1:59 etc. Even if there are no calls in the call table I need to return the range with a zero (hence the left join and nvl). When I do this the left join acts like an equal join, I suspect there is some reason left joins only work if there is an equal condition in the join (instead of >= and < that I use, or similarly I could use BETWEEN). I also have a question about performance (below).
The create table script for the lookup is like this:
CREATE TABLE DURATION_RANGES
(
RANGE_TEXT varchar2(20),
RANGE_LBOUND decimal(22),
RANGE_UBOUND decimal(22)
)
Sample inserts are:
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',0,59);
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('01:00 - 01:59',60,119);
etc.
The query is:
select
r.range_text as duration_range,
nvl(count(*),0) as calls,
nvl(SUM(call_duration),0) as total_duration
from
[code]...
As I say, it is not returning all ranges in the duration_ranges table, so acting like an inner join. I realize one solution would be to populate duration ranges with every value possible (instead of ranges) so join is an equal join, but that would make the duration_range table larger.
My questions:
1. Is it possible to get the left join to work with the duration range values as they currently are?
2. Even if 1 is possible, would it be better performance to have exact values (but a larger lookup table) and do an equals join instead of >=, < or BETWEEN? Performance now is not bad.
What I mean is (with only one time value and not lbound and ubound:
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',0);
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',1);
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',2);
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Nov 29, 2011
Using Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
Here's a simplified version of the query I am having problems with:
SELECT
assoc.association_id
FROM mentor_initiative mi
LEFT JOIN program assoc_prog ON assoc_prog.program_id = -1
LEFT JOIN mentor_association assoc ON assoc.mentor_initiative_id = mi.mentor_initiative_id AND
NVL(assoc_prog.program_id, -1) = NVL(assoc.program_id, -1)
Note that there is no program with program id -1. So the assoc_prog left join will come up with nothing. I was thinking that since assoc_prog.program_id will be null, the second assoc left join would pick the row where assoc.program_id is null. However, the second left join doesn't join to any row.
In this query, it does join to an assoc row (I changed assoc_prog.program_id to NULL)
SELECT
assoc.association_id
FROM mentor_initiative mi
LEFT JOIN program assoc_prog ON assoc_prog.program_id = -1
LEFT JOIN mentor_association assoc ON assoc.mentor_initiative_id = mi.mentor_initiative_id AND NVL(NULL, -1) = NVL(assoc.program_id, -1)
I was thinking it would join to an assoc row in the first query though. How can I change the first query to have the desired effect of left joining to a row where assoc.program_id is null if assoc_prog.program_id is null?
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Jan 20, 2011
joining this query instead of using the left join. Reason is want to show the score column in a different place and also do not want to show the second IPS column that is used in the joined query.
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Product
select * from
(
select i.ips,
p.project_name,
p.project_segment,p.location,p.project_exec_model,
p.project_exec_model||' - '||p.project_config pmodel,
one.score schedule,two.score cost,three.score execution,four.score commercial,
nvl(one.score,0)+nvl(two.score,0)+nvl(three.score,0)+nvl(four.score,0) as total,
[code]....
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Jun 17, 2010
I have the following 2 SQLs ; one return 1 row, another one is no row returned.
select v.value
from v$parameter v
where v.name = 'cpu_count';
return value "1"
select o.value
from v$osstat o
where o.stat_name = 'NUM_CPU_CORES';
No row returned.
combine the above two in to 1 SQL, and return 1 , null or 1, 1. I assume we can get it with left join for the condition "o.stat_name (+) = 'NUM_CPU_CORES'" , but no row returned for the following SQL. How could we get the result for 1, null for this case?
select v.value, o.value -- or NVL(o.value, 1)
from v$parameter v, v$osstat o
where v.name = 'cpu_count'
and o.stat_name (+) = 'NUM_CPU_CORES';
no row returned
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Feb 5, 2012
I am trying to develop an application of cars. The car have marques example :
TOYOTA,HUNDAI,CHEVROLET
each mark have families example: TOYOTA have Hilux, yaris corola, CHEVROLET have opra,...etc. Each family have a lot of models example: hilux have h2kn-clim,.. etc. And finally there are some options witch are generally in all cars example Radio-k7,air-conditioner ... etc.
option 1..n-----------------1..n model the relation call(opt_mod)
i did develop the block of marques (master) and the block of families (detail) in a form 1. i did develop the bock of models(master) in form 2 and the is no problem. but i want to add to form 2 the block of (opt_mod) but the user did tell me that he want to to see all options with check boxes .
As a solution of this problem i want to build a block on LEFT JOIN between table :option and table :opt_mod
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Jul 20, 2011
We just upgraded to 11g and have run into incorrect results for some of our LEFT JOINs. If the table, view, subquery, or WITH clause that is being LEFT JOINed to contains any constants, the results are not correct.
For example, a test (nonsensical) view such as the following is created:
create or replace view fyvtst1 as
select spriden_pidm as fyvtst1_pidm,
'Sch' as fyvtst1_test
from spriden
where spriden_last_name like 'Sch%' ;
When I run the following query, I get correct results; that is, only those with "Sch" starting their last name are listed.
select spriden_pidm, spriden_last_name, fyvtst1_pidm, fyvtst1_test
from spriden
join fyvtst1 on fyvtst1_pidm = spriden_pidm ;
However, when I change the JOIN to a LEFT JOIN, the last column contains "Sch" for all rows, instead of NULL:
select spriden_pidm, spriden_last_name, fyvtst1_pidm, fyvtst1_test
from spriden
left join fyvtst1 on fyvtst1_pidm = spriden_pidm ;
We've discovered other quirky things related to this. A WITH clause with similar logic as the above view, when LEFT JOINed to a table will also cause the constant to appear in each row, instead of NULL (and only the value where there is a join). But when additional columns are added to the WITH, it behaves correctly.
This is easy enough to rewrite - but we have WITHs and views containing constants in numerous places, and cannot hope to track down every single one successfully before the incorrect results are used.
Finally, the NO_QUERY_TRANSFORMATION hint will force the query to work correctly. Unfortunately, it has a huge negative performance impact (one query ran for an hour, vs. 1 second in 10g).
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Nov 2, 2012
I have an attendance table in which we have empno, time_in, time_out..etc.
I want to create a matrix report that should shows all dates of any specific required month in columns and present empno in rows and time_in in cells.
I did it with using a temporary table by filling all the required dates and outer join with attendance table, it works fine, but it takes so long, is there any other better fast way to do it?
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Jan 7, 2011
I have two tables A and B
Table A
bill_id number,
bill_line_id number,
discountnumber,
month varchar2(12),
year varchar2(4)
Table B
bill_id number,
bill_line_id number,
total_amt number,
customer_idnumber,
sales_repvarchar2(25),
sales_begindate,
sales_enddate
For all the records in table B I am trying to get discount information from table A. Each bill_id has one or many billing_line ids.It is not mandatory that all the bill_line_id from table B should be present in table A.in other words: a.bill_id can be 100 and a.bill_line_id = 456 but in table B, for b.bill_id =100 there can be b.bill_line_id = 123 and bill_line_id = 456.
I am joining the 2 tables based on bill_id, bill_line_id, and the start and end date.I am not sure how the outer join is done...Basically for every bill_id i need all bill_line id from table A.I am not sure how to *outer join on only one column*. When i tried it did not fetch all the rows from A.
select *
from table B left outer join table A on
a.bill_line_id = b.bill_line_id
and a.month = TRIM (TO_CHAR (b.sale_begin, 'Month'))
and a.year = extract(year from b.sale_begin)
where a.bill_id = b.bill_id
This is what I need: for every bill_line_id in table B i need discount information from table A if that bill_line_id is not in table A, the discount can be null. But, the bill_line_id in A and B should be for the same bill_id a.bill_id = b.bill_id and the outer join ......
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Aug 17, 2012
i have the following problem
select dem.NUM_PCE, memo.comment
from demand dem, dem_comment memo
where CONCAT(dem.NUM_PCE,dem.NUM_DEMANDE) = memo.parentId (+)
and memo.dateCreation = (select MAX(DEM_DATE_CREATION_MEMO)
FROM dem_comment memo
WHERE memo.parentId = CONCAT(dem.NUM_PCE,dem.NUM_DEMANDE))
I should have a result with this request but there's nothing and the problem come from the fact that when the following condition is not met, there are no resulty even if there's an outer join
and memo.dateCreation = (select MAX(DEM_DATE_CREATION_MEMO)
FROM dem_comment memo
WHERE memo.parentId = CONCAT(dem.NUM_PCE,dem.NUM_DEMANDE))
This condition makes Oracle ignores the outer join..I have tried to add this:
select dem.NUM_PCE, memo.comment
from demand dem, dem_comment memo
where CONCAT(dem.NUM_PCE,dem.NUM_DEMANDE) = memo.parentId (+)
and (memo.dateCreation = (select MAX(DEM_DATE_CREATION_MEMO)
FROM dem_comment memo
WHERE memo.parentId = CONCAT(dem.NUM_PCE,dem.NUM_DEMANDE))
or memo.dateCreation is null)
but there are too much records and the result is not consistent
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Mar 10, 2010
Suppose I have two tables
Transaction
TXN_ID:integer
TXN_DATE:date
Return_Transaction
RET_TXN_ID:integer
TXN_ID:integer
RET_TXN_DATE:date
[code]....
Transaction may have returned transactions. We use outer join to join the tables using TXN_ID. We have a report that shows the following data...The report use the following basic query to check all transactions with returned transactions information...Quote:
SELECT t.txn_id,
t.txn_date,
rt.ret_txn_id
FROM TRANSACTION t,
return_transaction rt
WHERE t.txn_id = rt.txn_id (+)
Result
TXN_ID, TXN_DATE, RET_TXN_ID
100, 2010/03/10, 500
102, 2010/03/11, 501
If user want to check all transactions with no returned transactions, a where clause is appended to the query
Quote:
SELECT t.txn_id,
t.txn_date
FROM TRANSACTION t,
return_transaction rt
WHERE t.txn_id = rt.txn_id (+)
AND Nvl((SELECT 1
FROM return_transaction rt
WHERE t.txn_id = rt.txn_id),0) = 0
[code].....
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Sep 19, 2012
I need to apply an outer join on following statement.
Select * From Abc A,Def B
Where Decode(A.Fin_Wid,10,A.Gry_Wid,A.Fin_Wid)=B.Fin_Wid;
I used following but error
Select * From Abc A,Def B
Where Decode(A.Fin_Wid,10,A.Gry_Wid,A.Fin_Wid)(+)=B.Fin_Wid;
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Apr 1, 2008
I need to use an outer join outside a to_char
to_char(the_date_field,'YYYYWW')(+) = '200815'
This throws up the error ORA-00936 missing expression.
I know it will work if I put the (+) right after the date before the mask but it need to check the week rather than the date.
I have tried using a function based index without success.
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Oct 12, 2011
I have a query which does a double right outer join, and I need it to be rewritten using the newer syntax.
The previous query had the following clause:
WHERE
MOD_INFO.MODIFICATION_ID (+)= MOD.ID
AND MOD.PEPTIDE_ID (+)= PEPTIDE.ID
Or you can think of it generically as:
T1.T2_FK (+)= T2.ID AND
T2.T3_FK (+)= T3.ID
How would this be written using the newer syntax?
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Oct 19, 2011
I am trying to use Full Outer Join, here is the DB version and test case
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning, OLAP and Data Mining options
create table tab1 (The_Date DATE, x_ID varchar2(4), x_CODE varchar2(10),
r_qty number(8))
create table tab2 (The_Date DATE, x_ID varchar2(4), x_CODE varchar2(10),
o_qty number(8))
tab1 can have multiple records for key fields The_Date + x_ID + x_CODE
insert into tab1
values (to_date(sysdate)-2, '001', 'ABC', 100)
insert into tab1
[code]...
tab2 should have unique record for key fields The_Date + x_ID + x_CODE
insert into tab2
values (to_date(sysdate)-2, '001', 'ABC', 1000)
insert into tab2
values (to_date(sysdate)-2, '001', 'XYZ', 1500)
[code]...
THE_DATE X_ID X_CODE R_QTY
--------- ---- ---------- ---------
17-OCT-11 001 ABC 100
17-OCT-11 001 ABC 100
17-OCT-11 001 ABC 100
17-OCT-11 001 XYZ 1000
18-OCT-11 001 ABC 200
18-OCT-1
[code]...
When I tried my SQL statement as below it is not showing what i expected, but where and what it is? this approach is correct or not
devtest@ Test.DB> select a.the_date,
2 a.x_ID,
3 a.x_code,
4 sum(a.o_qty) o_qty, sum(b.r_qty) r_qty
5 from tab2 a full outer join tab1 b
[code]///
I want output as below:
THE_DATE X_ID X_CODE O_QTY R_QTY
--------- ---- ---------- --------- ---------
17-OCT-11 001 ABC 1000 300 -- here O_QTY should be 1000
17-OCT-11 001 XYZ 1500 1000
18-OCT-11 001 ABC 500 600 -- here O_QTY should be 500
19-OCT-11 001 ABC 500
18-OCT-11 001 XYZ 2000 -- here The_Date, x_ID and x_CODE should appear
EDITED FOR:
devtest@ Test.DB> ed
Wrote file afiedt.buf
1 with data1 as (select the_date, x_ID, x_CODE, sum(o_qty) o_qty
2 from tab2
[code]...
now only the required is values of THE_DATE, X_ID and X_CODE of Last Record.Still asking about, is it correct approach ?
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Aug 13, 2011
I am working on a query that has outer joins. The result of this query has to be stored into a table. When i execute this query alone (without INSERT command) it works absolutely fine but when i put the INSERT statement it gives me the error message "ORA-01719: outer join operator (+) not allowed in operand of OR or IN". The thing is I dont have an IN or OR in my query. I am in the middle of something
Attached is the screen shot of both the result and the error message. Query mentioned below:
<INSERT into table query comes here..>
select * from (
SELECT yy.ACCOUNTID, yy.dump_date, yy.balance, yy.Last_30days_activity,zz.GSM_Balance, nvl(yy.SUM_GSM_REV, 0) from
(
[Code]....
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Jan 23, 2013
I'm wondering what part of this query is wrong because obviously I'm not getting the desired results.
select a.iss_id,C.ISSR_ID
from ft_t_isid a left outer join ft_t_issu b on a.INSTR_ID=b.INSTR_ID
left outer join ft_t_irid c on b.INSTR_ISSR_ID=c.INSTR_ISSR_ID
and a.ISS_ID in ('CA13606ZDD20',
'CA780086AP98',
[Code]...
I know that the problem is in the joins. I expect to get 9 rows of result but I get a lot more and they are not even what I'm looking for.
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Jun 27, 2013
How to use outer join condition in my below query.In the table APPS_JP.GEDIS_OFFER_HEADER goh I have more recordsin the table APPS_JP.GEDIS_ORDER_BUILDS gob I have less number of records. I want all the records from
APPS_JP.GEDIS_OFFER_HEADER goh including other conditions.I have tried goh.OFFER_NO=gob.OFFER_NO(+) but same result. [code]SELECT GOH.ORIG_SYSTEM, gsp.USER_NAME, goh.ORDER_NO, goh.OMEGA_ORDER_NUMBER, goh.ORDER_TYPE, gc.CUSTOMER_ID, gc.OMEGA_CUSTOMER_NUMBER, CASE WHEN gc.PRIVATE = 'N' THEN gc.CUSTOMER_NAME ELSE ''
[code]...
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Jun 14, 2012
i have a query that is not working properly. i am trying to join two tables and i have OR condition and outer join..i am getting error ORA-01719: outer join operator (+) not allowed in operand of OR or IN..my query is as follow
SELECT l.* FROM table1 l, table2 map
WHERE (NVL(l.id, '-99') = NVL(map.id(+), NVL(l.id, '-99'))
AND l.TYPE = 'TKE')
) OR
(NVL(l.id, '-99') = NVL(map.id(+), NVL(l.id, '-99'))
[code]....
)So basically in the query above i am saying that if type ='TKE' dont do the join on all the pos columns. if type is not TKE then do all the joins on all the pos columns etc.how can i rewrite query so that i can use OR and the outer JOIN in same query?
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