Problems with Last_value (col Ignore Nulls)

Thank you in advance

I use Last_value (col Ignore Nulls) in Expression

LAST_VALUE (INGRP1. AADT IGNORE NULLS) (ORDER OF INGRP1. ROUTE_ID, INGRP1. COUNTY, INGRP1.CO_ORDR, INGRP1. BEG_MP)

I am getting error can of assistance

Line 2, Col 30:
PLS-00103: Encountered the symbol "IGNORE" when expecting one of the following:

   . ( ) , * @ % & | = - + < / > at in is mod remainder not
   range rem => .. <an exponent (**)> <> or != or ~= >= <= <>
   and or like LIKE2_ LIKE4_ LIKEC_ as between from using ||
   multiset member SUBMULTISET_

Hello

Change the code Generation Mode 'Base set' and the run setting default operating Mode "base set" and redeployment.

Default OWB will generate code with a bunch of different modes including PLSQL focused on the line. You use SQL based unparalleled PLSQL so get a problem compiling for the line section based on the generated code.

See you soon
Davivd

Tags: Business Intelligence

Similar Questions

JDev 11 g: problem view VO criteria ignore Null values
Hello

I don't know if it's a bug or do something wrong but here is my case:
I created an original Version of a database table.
In page view of all of VO, aaa I bind a variable named
Then I add a criteria-> display I add an element of criteria including bing my previously create variable to an attribute of VO-> I have defined validation on "necessary".
Then a race my request and made a few test/dev.

After a while, I needed to change my display criteria 'optional' with 'Ignore Null values' checked.
I changedit, run my application and the display criteria did not work... I don't add no rows returned when I went to my variable named "null".
After 1 or 2 days to research, I managed to notice that in fact, an attribute is missing in my VO object source.

I needed to add explicitly in the XML of the source of this attribute:
GenerateIsNullClauseForBindVars = 'true '.

in the desired so ViewCriteriaItem it ignores Null values.

I tried various combinations of the interface for presentation but non of them generated this attribute set to "true".
Only when I put the validation 'Optional' and ' ignore values null ' unchecked, GenerateIsNullClauseForBindVars = 'false' appears in the XML source code.

Is this a bug?
Here's my version JDev: Build JDEVADF_11.1.1.1.0_GENERIC_090615.0017.5407

Jack
To report a bug, you must go through the MOS (aka Metalink). You need a support contract valid to log into MOS.

Timo

Problem with subtotal and grand total using GROUP BY ROLLUP.

Hi all
I have a question about the SQL. I need to have the subtotal for each group and total for the entire inside of my request. I've had using GROUP BY ROLLUP to have total subtotal and big inside of my request.
However, it not successful I want. In addition, my data must be presented in the medium hierarchy. So, I also use CONNECT BY permission inside my request.
The query returned the results but not as my expected.
Below is all about the tools used, description of flows, issues, query used, sample data, out of the request as well as the expected results: -.
Tools used: -.
- Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production
Description of the flow: -.
Lily is an AM of agency which is the highest level of management (LEVEL 1). Kevin is the direct agent under the lilies and the sum of productivity(upstream)
for each of them must be sum up as the Subtotal. Sarah and Tom is the Unit Manager (UM) (LEVEL 2) who reports to Lily. They have the direct agents (Agent) under each of them which are may, John, Sue and Salwa (LEVEL 3). There should be a Subtotal for each group of the agent. For example:-May (Agent) is the agent under Sarah (UM) and both of them have productivity and productivity should be sum up as a subtotal for the core group. A GRAND TOTAL is required to summarize all the productivity for each group.
Problem: -.
1. The output of my query is appear the subtotal, but the amount is inaccurate because it only to summarize the productivity of agent. The output I expect is summarize the productivity of the agent as well as UNIFIED messaging / AM. For example:-(subtotal = UM / AM.) THE PRODUCTIVITY + AGENT. PRODUCTIVITY)
2. The total general does not show after the query. The output that I expected is productivity for each groups as shown in the attachment below. For example:- GRAND TOTAL =(SUBTOTAL+SUBTOTAL+SUBTOTAL)
3. My data must be submitted in respect of the hierarchy as below: -.
4. I need to pass the variable in the query and be used as a parameter in the ADF. Agent ID of Lily(AM) pass in the variable as a parameter.
Here's my query: -.
SELECT LPAD (' ', 4 *(LEVEL-1))
|| NAME FIRST_NAMEQ,
TOTAL_MANPOWER,
SUM_MTD_TOTAL_ANP UPSTREAM,
level,
A_AGENT_ID
Of
(SELECT B.SID,
A.UPLINE,
A.AGENT_ID AS A_AGENT_ID,
GROUPING (B.SID) agg_am_id,
GROUPING (A.AGENT_ID) agg_um_id,
GROUPING (A.Upline) agg_IM_id,
SUM (B.TOTAL_MANPOWER) TOTAL_MANPOWER,
SUM (B.MTD_TOTAL_ANP) SUM_MTD_TOTAL_ANP
OF ABM_AGENT_TEST,.
ABM_PRODUCTIVITY B
WHERE A.AGENT_ID = B.AGENT_ID
ROLLUP GROUP ((A.UPLINE), (A.AGENT_ID, B.SID)))
START WITH A_AGENT_ID =: HAS
CONNECT BY PRIOR A_AGENT_ID = UPSTREAM
ORDER OF FRIARS UPSTREAM;
Below is the query to create the table and also the data: -.
-TABLE ABM_AGENT_TEST-
CREATE TABLE 'ABM_AGENT_TEST '.
(NUMBER OF 'AGENT_ID',
VARCHAR2 (50 BYTE) "NAME."
VARCHAR2 (10 BYTE) "GRADE."
VARCHAR2 (20 BYTE) "UPSTREAM."
'REGION' VARCHAR2 (20 BYTE),
"BRANCH" VARCHAR2 (20 BYTE),
'THE AGENCY' VARCHAR2 (20 BYTE)
)
SAMPLE DATA FROM ABM_AGENT_TEST
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (116, "Lily", "AM", null, null, null, null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (102, 'Tom', 'MU', '116', null, null, null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (110, 'Sarah', 'MU', '116', null, null, null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (100, 'John', 'AGENT', '102', 'Central', 'PJ', 'CPA');
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (109, "Salwa", 'AGENT', '102', 'South', 'MLK', null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (101, 'Howard', 'AGENT', '102', 'North', "Damansara", "AP");
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (103, 'Mary', 'AGENT', '102', 'Central', 'PJ', 'CPA');
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (106, 'Ali', 'AGENT', '110', 'Central', 'JlnPd', null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (111, 'Sue', 'AGENT', '102', 'North', "Damansara", null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (112, "Carron', 'AGENT', '102', 'Central', 'HQ', null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (113, "Siti', 'AGENT', '102', 'Central', 'PJ', null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (114, "Siti FHIMA Dane forecastle', 'AGENT', '102', 'North',"Damansara", null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (105, 'Kathy', 'AGENT', '102', 'Central', 'JlnPd', 'LPK');
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (107, 'Roby', 'AGENT', '110', 'North', "IPH", null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (108, 'Tommy', 'AGENT', '110', 'South', 'MLK', null);
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (104, 'May', 'AGENT', '110', 'Central', 'HQ', 'CPA');
Insert into ABM_AGENT_TEST (AGENT_ID, NAME, GRADE, upstream, REGION, BRANCH, AGENCY) values (115, 'Kevin', 'AGENT', '116', 'North', "IPH", null);
-TABLE ABM_PRODUCTIVITY-
CREATE TABLE 'JEROMEWALTER '. "" ABM_PRODUCTIVITY ".
(NUMBER OF 'AGENT_ID',
NUMBER OF "TOTAL_MANPOWER."
NUMBER OF "MTD_TOTAL_ANP."
NUMBER OF "MTD_PRODUCTIVITY."
VARCHAR2 (20 CHAR) "YTD_TOTAL_ANP."
VARCHAR2 (20 CHAR) "YTD_PRODUCTIVITY."
"ROW_ID" VARCHAR2 (20 BYTE)
)
SAMPLE DATA FOR ABM_PRODUCTIVITY
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (104,1,85000, null, '40000', null, ' 6');
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (102,1,35000, null, '33000', null, ' 7');
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (110,1,25000, null, '25000', null, ' 8');
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (116,1,22000, null, '34000', null, ' 10');
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (109,1,75000, null, '80000', null, ' 2');
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (111,1,25000, null, '25000', null, ' 3');
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (100,1,23000, null, ' 34500', null, "11");
Insert into ABM_PRODUCTIVITY (AGENT_ID, TOTAL_MANPOWER, MTD_TOTAL_ANP, MTD_PRODUCTIVITY, YTD_TOTAL_ANP, YTD_PRODUCTIVITY, ROW_ID) values (115,1,24000, null, '45000', null, ' 9');
The output after having received the request and not as my are expected as below: -.
The result I have espect is as below: -.
If all goes well, there is a way to solve my question.
Thank you all and have a nice day

Hello

I still don't know how you want to trunking. You want someone who has a tank of 'AGENT' that lie with its parent in the hierarchy?

If Yes, you can do the update ROLLUP before you make the CONNECT BY query and claim that summaries are the children of one of the actual lines in the tree, like this:

WITH got_grp_id AS

(

SELECT b.SID, a.upline

TO_CHAR (a.agent_id) AS a_agent_id

CASE

WHEN a.agent_rank = "AGENT".

AND a.upline IS NOT NULL

THEN a.upline

Of OTHER TO_CHAR (a.agent_id)

END AS grp_id

p.total_manpower, p.mtd_total_anp

Of abm_agent_test one

abm_productivity p

WHERE a.agent_id = p.agent_id

)

got_aggregates AS

(

SELECT THE CHECK BOX

WHEN you GROUP (name) = 0

THEN the name

WHEN you GROUP (grp_id) = 0

THEN "SUBTOTAL".

ANOTHER "GRAND TOTAL".

END AS name_s

CASE

WHEN you GROUP (upstream) = 0

THEN upstream

WHEN you GROUP (grp_id) = 1

THEN TO_CHAR (: a).

Of OTHER LAST_VALUE (a_agent_id IGNORE NULLS)

COURSES (PARTITION BY grp_id

ORDER OF CASES

WHEN a_agent_id <> grp_id

THEN SUM (mtd_total_anp)

END NULLS FIRST

ROWS BETWEEN UNBOUNDED PRECEDING

AND UNBOUNDED FOLLOWING

)

END AS parent

a_agent_id, grp_id

SUM (total_manpower) AS sum_total_manpower

SUM (mtd_total_anp) AS sum_mtd_total_anp

Group of (name) AS g_name

GROUPING (grp_id) AS g_grp_id

OF got_grp_id

GROUP OF ROLLUP (grp_id

, (name, upstream, a_agent_id)

)

)

SELECT THE CHECK BOX

WHEN g_grp_id = 0

THEN LPAD (' ', 4 * (LEVEL - 1))

END | name_s AS first_nameq

sum_total_manpower

sum_mtd_total_anp

CASE

WHEN g_name = 0

THEN THE LEVEL

4 SOMETHING ELSE

END as lvl

a_agent_id

OF got_aggregates

START WITH a_agent_id = TO_CHAR (: a).

Parent = a_agent_id PRIOR CONNECTION

Brothers and SŒURS of ORDER BY sum_mtd_total_anp

;

Output:

SUM_

SUM_ MTD_ A_

TOTAL_ AGENT TOTAL

FIRST_NAMEQ MANPOWER _ANP LVL _ID

-------------------- -------- -------- ---------- -----

Lily 1 22000 1 116

Kevin 1 24000 2 115

PARTIAL TOTAL 2 46000 4

Sarah 1 25000 2 110

May 1 85000 3 104

PARTIAL TOTAL 2 110000 4

Tom 1 35000 2 102

John 1 23000 3 100

Sue 1 25000 3 111

Salwa 1 75000 3 109

PARTIAL TOTAL 4 158000 4

GRAND TOTAL 8 314000 4

I changed the column names. (For example, there is a built-in function called RANK, so this isn't a column name good. "It's confusing to use upstream to 2 unrealted stuff.)

I guess just what you want for the LVL column.

Why is agent_id a NUMBER, but upstream a VARCHAR2? I expect to be of the same data type, so that upstream may be a foreign key referencing agent_id.

Fill with the previous 'not null' value ' Null' known values

Hi all
I have the following requirement to fill in missing values (null values) with the "Not null" values known previously available.
Source of the example:
Emp_Id Start_Dt LOC Comm Grade
A101
01/01/2013
NJ 4000 B
A101
15/03/2013
CA 4800
A101
15/05/2013
3500C
A101
25/07/2013
2500
A101
20/12/2013
NY5800A
A101
14/02/2013
5000
A101
20/05/2014
DC6000A
A101
03/06/2014
3600C
A102
24/05/2013
THE5000A
A102
15/12/20134300
Expected results values in columns LOC and grades:
Emp_Id Start_Dt LOC Comm Grade
A101
01/01/2013
NJ4000BA101
15/03/2013
CA4800BA101
15/05/2013
CA3500CA101
25/07/2013
CA2500CA101
20/12/2013
NY5800AA101
14/02/2013
NY5000AA101
20/05/2014
DC6000AA101
03/06/2014
DC3600CA102
24/05/2013
THE5000AA102
15/12/2013
THE4300A
Any suggestions would be helpful.
Kind regards
Arun

Also, I think that this is a case of analytics. Last_value is perhaps the most appropriate function for the given task:

Select emp_id

start_dt

last_value(loc ignore nulls) over (partition by emp_id arrested by start_dt) loc

comm

last_value(grade ignore nulls) about category (partition by emp_id arrested by start_dt)

t

Function of lag ignoring NULL values in 10g

I have the following query that works well in 11g. I want to rewrite the query in 10g and get the same set of results. Because the offset ignoring NULL values, I used below is a new feature in 11g, someone can help me in rewriting the query below.
Prop1 - String, evar11 - String
Select prop1, evar11,.
lag (Prop1 ignores Nulls) over (partition by order of period_key of visit_page_num, visit_num, visid_low, visid_high) as prop1_lag
from TABLE_A
where period_key = '20131012' - DATE
order of visit_page_num
Thanks in advance,
H.

Hello

In Oracle 10, you can use LAST_VALUE... ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PREVIOUS instead of LAG.

As I don't have your table, I'll use scott.emp to illustrate:

SELECT hiredate, ename, comm

MOST LAG (comm IGNORE NULLS) (ORDER BY hiredate, ename) AS lag_comm

, LAST_VALUE (comm IGNORE NULLS) OVER (ORDER BY hiredate, ename)

ROWS BETWEEN UNBOUNDED PRECEDING

AND 1 PRECEDING

) AS last_value_comm

FROM scott.emp

ORDER BY hiredate, ename

;

The output shows that LAG and LAST_VALUE produce the same results:

HIREDATE ENAME LAG_COMM LAST_VALUE_COMM COMM

--------- ---------- ---------- ---------- ---------------

DECEMBER 17, 80 SMITH

FEBRUARY 20, 81 300 ALLEN

FEBRUARY 22, 81 WARD 500 300 300

2 APRIL 81 JONES 500 500

MAY 1, 81 BLAKE 500 500

JUNE 9, 81 CLARK 500 500

08 SEP-81 TURNER 0 500 500

28 SEP-81 MARTIN 1400 0 0

NOVEMBER 17, 81 1400 1400 KING

DECEMBER 3, 81 1400 1400 FORD

DECEMBER 3, 81 JAMES 1400 1400

JANUARY 23, 82 1400 1400 MILLER

APRIL 19, 87 SCOTT 1400 1400

MAY 23, 87 1400 1400 ADAMS

To run the Oracle 11.1 or earlier, comment out the call to the LAG.

Just recently, I receive the following error message when you try to access the web sites. I get a pop-up window indicating "Exc in ev handl: TypeError: c.location is null" then I have to click ok. There is a problem with some plugin?

Just recently, I receive the following error message when you try to access the web sites. I use Firefox browser version 10.0.2. I get a pop-up window indicating "Exc in ev handl: TypeError: c.location is null" as the web site page is displayed in the browser winder. So, I have to click ok. Any link/website I go to what happens. There is a problem with some plugin?

It is only a problem for the SiteAdvisor users who are still on 3.4. This problem is resolved in the latest version of SiteAdvisor, which is 3.4.1.195. Go to http://siteadvisor.com and click on download. This will fix the problem.

Meanwhile, SiteAdvisor team will push down a JS update in the coming days 1-2 to automatically resolve this problem in version 3.4.

Automatic update arrived and installed himself, but then told me that it was incompatible with my Mac version: 10.5.8. Firefox version 3.6.26 is now about it. It seems to work even. Y at - it's going to be a problem or should I ignore this message?

Automatic update arrived and installed himself, but then told me that it was incompatible with my Mac version: 10.5.8. Firefox version 3.6.26 is now about it. It seems to work even. Y at - it's going to be a problem or should I ignore this message?
If I need to can replace it where I get an older version?
Thank you

Firefox 4 versions and later, do not run on a PowerPC Mac and require at least OS X 10.5 and an Intel Mac.

The latest support for your operating system version is 3.6.26 , you are fully updated.

For more information, see:

Firefox 3.6 system requirements

Firefox 10 system requirements

[For older Mac that are not supported in versions of Firefox 4 +, if you want, try TenFourFox for PowerPC currently running Mac 10.4.11 and 10.5.8]

http://www.floodgap.com/software/tenfourfox/

http://tenfourfox.blogspot.com/

https://code.Google.com/p/tenfourfox/wiki/PluginsNoLongerSupported

Thank you

Please check 'Resolved' the answer really solve the problem, to help others with a similar problem.

I have problem with value NULL when the use CASE statement please help this question

I have problem with value NULL when the use CASE statement please help this question

Table: digital_val
SNO cl C2
1 San1 11
2 22 San2
Actual result: expected to A B
A B 11 22
11 NULL
22 NULL

query:
Select case when c1 = "san1" then c2,.
case If c1 = "san2" then c2 B
of digital_val

I'm more curious why, when you select 2 rows, you expect a result of row?

WITH digital_val

AS (SELECT 1 AS 'Sno', 'San1"C1, c2 FROM DUAL 11)

UNION ALL

2 SELECT AS 'Sno', 'San2"C1, c2 FROM DUAL 22)

SELECT CASE WHEN c1 is "San1" THEN END AS A c2.

CASE WHEN c1 = "San2" THEN END AS B c2

OF digital_val;

With no other input, if you select 2 rows, you get 2 rows. One of the other solutions use a max function, but is this really what you want, does not specify?

Emp_Id	Start_Dt	LOC	Comm	Grade
A101	01/01/2013	NJ	4000	B
A101	15/03/2013	CA	4800
A101

Emp_Id	Start_Dt	LOC	Comm	Grade
A101	01/01/2013

function of nth_value() with IGNORE NULLS in oracle 10g

Is there an easy way to imitate the function of ORACLE 11 g nth_value() with IGNORE NULLS clause in 10g or earlier version of Oracle?

SQL> select  ename,
  2          sal,
  3          nth_value(sal,5) over() fifth_min_sal
  4    from  emp
  5    order by sal
  6  /

ENAME             SAL FIFTH_MIN_SAL
---------- ---------- --------------
SMITH             800           1250
JAMES             950           1250
ADAMS            1100           1250
WARD             1250           1250
MARTIN           1250           1250
MILLER           1300           1250
TURNER           1500           1250
ALLEN            1600           1250
CLARK            2450           1250
BLAKE            2850           1250
JONES            2975           1250

ENAME             SAL FIFTH_MIN_SAL
---------- ---------- --------------
SCOTT            3000           1250
FORD             3000           1250
KING             5000           1250

14 rows selected.

SQL> select  ename,
  2          sal,
  3          min(case rn when 5 then sal end) over() fifth_min_sal
  4    from  (
  5           select  ename,
  6                   sal,
  7                   row_number() over(order by sal nulls last) rn
  8             from  emp
  9          )
 10    order by sal
 11  /

ENAME             SAL FIFTH_MIN_SAL
---------- ---------- --------------
SMITH             800           1250
JAMES             950           1250
ADAMS            1100           1250
WARD             1250           1250
MARTIN           1250           1250
MILLER           1300           1250
TURNER           1500           1250
ALLEN            1600           1250
CLARK            2450           1250
BLAKE            2850           1250
JONES            2975           1250

ENAME             SAL FIFTH_MIN_SAL
---------- ---------- --------------
SCOTT            3000           1250
FORD             3000           1250
KING             5000           1250

14 rows selected.

SQL>

SY.

Vista seems to ignore the free arp packets. There are details about this problem with Vista?

There are details about this problem with Vista? Thks Jerry

Hi Jerry.Smith

You can check this link for more information:

http://social.technet.Microsoft.com/forums/en-us/winserverPN/thread/c6cb9f57-7D5D-4B75-A79A-ff0806300fbe

After back and let us know if it helped to solve your problem.

Thank you and best regards,

R uma - Microsoft technical support.

Visit our Microsoft answers feedback Forum and let us know what you think.

Lag() ignore null values performance

Hello
I have looked around, but didn't find everybody talks about performance problems specifically with the use of 'IGNORE NULLS' inside of an analytic function of LAG() in a view online.
This is a cut from the version of my sql, isolated to the question under discussion.
```
select * from (
  SELECT /* use_nl (j,gjt,jt) */
     jt.id
    ,COALESCE
      (lag(jt.my_column ignore nulls /* this is the nasty critter */
        ) over (order by jt.order_seq)
      ,0
      )+1 AS start_days
    ,coalesce
      (jt.my_column
      ,last_value(jt.my_column ignore nulls
        ) over (order by jt.order_seq desc)
      ) AS end_days
  FROM  a,bunch,of,tables
  WHERE ...
  ) jt 
where jt.id = '123456'
```
If I remove ignores NULL values in the offset, there is no performance problem.
Last_value() is not affected.
If I do not use a view inline then performance is very good, although it is no different to explain the plan.
```
select ..
from ...
where ...
and id = '123456'
```
Has anyone come across something like this, or have any suggestions?
Happy to try to build a test scenario if it contributes to the discussion, but I thought I would just ask the question first.
Scott

Scott.Wesley wrote:

Hello

I have looked around, but didn't find everybody talks about performance problems specifically with the use of 'IGNORE NULLS' inside of an analytic function of LAG() in a view online.

If I remove ignores NULL values in the offset, there is no performance problem.

Last_value() is not affected.

If I do not use a view inline then performance is very good, although it is no different to explain the plan.
1. Select...
2. Of...
3. where the...
4. and id = '123456'
Scott,

He would not have anything to do with your real problem, since you say that you get different performances during the removal of the IGNORE NULLS clause, but I doubt that you get exactly the same execution plan when online display is deleted these two queries are typically semantically the same.

If you use the inline view, Oracle cannot push the filter on the ID in the view if the analytical functions partitions not by this ID, because the result will not be the same for the steps: with the online mode, the data is transformed without filtering for the evaluation of the expressions of the LAG etc, and then the filter is applied.

If you remove the inline view and filter directly, it has a quite different meaning because now the data will be filtered first and then the analytical functions apply to the filtered result set.

So the case of inline view maybe has to deal with a completely different volume (larger) identical to the variant of view data not online according to the selectivity of the filter - which could explain that the clause "IGNORE NULLS" made a significant difference in performance on this larger volume of data to deal with, but not necessarily.

Randolf

Problem with hierarchical query in function PL\SQL

I have a simple table containing the ID of the parent

-Create table

create the table1 table:

(

ID NUMBER (12) not null,

year number 4.

month NUMBER (2),

parent_id NUMBER (12)

);

-Create/recreate primary, unique and foreign key constraints

change the table1 table:

Add primary key constraint PK_TABLE1 (ID);

change the table1 table:

Add the foreign key constraint FK_TABLE1_PARENT (PARENT_ID)

reference TABLE1 (ID);

data: