Filter using Function resulting incorrect where cause

Hi,
I have a requirement wherein i have to filter a column based on a combination of mutiple hierarchy dimensions for which i am using Filter Using Function
ex.
Filter Metric A Using Dimesion A - Range 50 -100
Filter Metric A Using Dimension A - Range 25 - 50, Dimension B Range 0 -100
When i have a report with these metrics alone then it works fine but when both metrics are exposed on a single report
The where clause results in something like this
(Dimension A > 50 OR Dimnesion B > 0) AND (Dimension A > 25 OR Dimension A < 100 OR Dimesnion B < 100) AND Dimesnion A < 50
To sum it up its random and incorrect, any ideas as to why this could happen ??
Any pointers etc would be highly appreciated.

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Problem using function call in WHERE part of a Report's SQL query

I tried doing some searches on this, but couldn't find anything. I'm trying to run something similar to the following query in my report, but keep getting a "Query cannot be parsed within the Builder" error:
SELECT function1(TABLE2.ID) A
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WHERE TABLE1.ID = TABLE2.ID AND
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ORDER BY TABLE1.NAMEWhy won't this work? I can take out the 2 lines with function calls from the WHERE clause, and it works, so I'm assuming that APEX doesn't like something about my function calls. I know the functions are valid and work properly, because I tested them independently. Can anyone see what the problem is? Thanks!

Here's the actual query:
SELECT BUILD_EXT_RES_LIST(EXT_FILE.ID) A
FROM EXT_FILE_RES, EXT_FILE
WHERE EXT_FILE_RES.ON_OWNER_PROFILE = 'Y' AND
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1 error has occurred
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Clarification on using function in where clause of oracle sql query

I have an issue in regarding function using where clause of sql query..
We are facing performance issue while executing query, so in what ways to improve the performance of the query which i have posted below.
select col ,case when my_function(parameter)
from tab1 a ,tab2 b,tabl3 c
where a.column1=b.column2
and b.column3 =c.column6
and my_function(parameter)>0
Regards
Dinesh
Edited by: wild fire on May 18, 2012 4:15 PM

Dinesh,
remind that when you use a function in the where clause it normally will get started for each record in the table.
So your answer is two-fold:
1. make the function only start when needed by adding a function based index on the table (this will make inserts and updates slower)
2. make the function faster by adding the DETERMINISTIC clause if possible. this will make Oracle "cache" the result of the function.
Regards,
Richard
blog: http://blog.warp11.nl
twitter: @rhjmartens
If this question is answered, please mark the thread as closed and assign points where earned..

How to create a filter using mathscript transfer function in labview

Dear all,
I am currently designing a filter in labview using a Mathscript looping. The filter can be represented in transfer function. I have attachted the transfer function equation together with its value and the desire frequency vs. amplitude graph that I should obtained from it. Also, following are the transfer function written in Matlab.
B1= tf ([57.5221845],[1 51.017077 205.1868]);
B2 = tf ([1 0],[7.6991]);
B3 = tf ([1 0],[14.32433403]);
B4 = tf ([1 0],[137.6017]);
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plot(F)
I have also modify the coding as Labview Mathscript does not support the Matlab coding "tf" as transfer function to "bilinear"
Problem I am facing are:
1) Unable to display the graph of the filter in labvie.
2) Unable to have sinewave as an input to the filter.
3) The output cannot be display in graph format.
Hope to have the soonest reply from you guys. Many thanks in advance
Solved!
Go to Solution.
Attachments:
transfer function.jpg ‏18 KB
Weighting Filter.vi ‏266 KB

Thank you again for offering to help me in writing the code.
I suppose that I should do a frequency sweep on the transfer
function to prove that it behave as the sample graph. Example, if I have an input sine
wave with the frequency of 8.8Hz passing through the transfer function filter, the
output that I should be getting is 1 according to the transfer function graph
and of cause the frequency range of my input sine wave would only be between
the ranges of 0.5 Hz to 30 Hz.
Attachments:
Weighting FilterTest1.vi ‏53 KB

Using the result of a function, inside a subselect

Hi!
I´m wondering if it´s possible to use the result of a function inside a subselect. Let me give you an example of what I´m trying to do here:
select * from t_node where node_pk in (get_node_parents_pk(22345));
The function get_node_parents_pk stands in for the following SELECT-statment:
select node_pk from t_node_child where parent_node_pk = 12345
The statement above would return something like this: 12435,23423,23453,23452
These values represent the node_pk value for the parent nodes.
I want the get_node_parents_pk function to return a result set similar to this so that I might call it inside the IN ( ) statement.
Any clue? =)

I created a collection type in the database:
CREATE OR REPLACE TYPE nodes_pk_arr IS TABLE OF INTEGER;
The function get_node_parents_pk () is made to return the collection type above. However, this does not work. I get the following error message:
SELECT *
FROM t_node
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However, if I insert a nodes_pk_arr collection directly into the SQL-statement, like I do below, it works:
SELECT *
FROM t_node
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So, when returning the collection from the function I´m told that the collection is not a nested table, when in fact it is. What gives?
Also, is there no way to return a result set directly from the get_node_parents_pk() function, making it possible to write the statement like that shown below?
SELECT *
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Kind regards
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Regd. using functions in where clause

Hi All,
I need to apply a set of functions in sysdate and use that in a where clause to compare. My question is, will these functions on sysdate be executed for every record in the tables that I use? Will this have performance impact when i have millions of records returned by the select?
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Regards,
Raj.D

1005330 wrote:
I need to apply a set of functions in sysdate and use that in a where clause to compare. My question is, will these functions on sysdate be executed for every record in the tables that I use? Will this have performance impact when i have millions of records returned by the select?
Below is the scenario:
Select * from table A inner join table B on A.c1 = B.c1 where
TO_NUMBER(TO_CHAR(TRUNC(LAST_DAY(ADD_MONTHS(SYSDATE, -1))),'YYYYMMDD')) BETWEEN Date1 and Date2
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Oracle OUGHT to be smart enough to recognise that you've got a constant that it need only calculate once. If not, then change the usage to read:
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col1 <= constant
and col2 >= constantIn many cases this means oracle has to access a large volume of data (for one of the predicates) and then filter that data (with the other predicate). A typical damage limitation strategy is to create an index on the two columns, arrangin the column order to minimise the range scan on the first column.
Depending on your data patterns and the nature of the predicate there are alternative optimiisation strategies.
Regards
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I have created a function as follows
create or replace FUNCTION get_codes RETURN varchar2 IS
scodes varchar2(50) := 'A1,A2';
BEGIN
scodes := '('''||REPLACE(scodes,',',''',''')||''')';
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select * from tablea where code in ('A1','A2')
how to use function in where clause
Thanks

Hi,
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[Oracle Base|http://www.oracle-base.com/articles/misc/DynamicInLists.php] and AskTom have good pages on the subject of dynamic IN-lists.
Of you can use INSTR or LIKE:
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, '''' || code || ''''
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How to use a function in a Where Clause?

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Edited by: Mark1970 on 2-lug-2010 3.27

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The below function is giving me the hours difference what I wanted, but today it is giving us the below error:
Msg 535, Level 16, State 0, Line 1
The datediff function resulted in an overflow. The number of dateparts separating two date/time instances is too large. Try to use datediff with a less precise datepart.
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ALTER FUNCTION [dbo].[GetHoursExcludingWeekdays](@StartDate datetime2,@EndDate datetime2)
returns decimal(12,3)
as
begin
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if datepart(weekday,@EndDate) = 7
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ReportingServices

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returns decimal(12,3)
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if datepart(weekday,@EndDate) = 7
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Filter using Function resulting incorrect where cause

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