SQL & PL/SQL :: Optimizing Function Returning Integer?
Feb 5, 2012
I have the following function that I am using as a template for any function that executes a select statement and return a single value as an output.
The function is working but I wanted to take an expert opinion if it can be optimized.
CREATE OR REPLACE FUNCTION AFESD.F_AGR_GET_AGREEMENT_SERIAL
(I_NUMBER0 IN NUMBER, S_SUB_NUMBER VARCHAR2 DEFAULT NULL, I_TYPE_ID NUMBER)
[Code]....
In addition I want to use the parameter S_SUB_NUMBER that can be NULL and add it to the select statement of the cursor, but I dont know how to do that in one statement.
CURSOR C_AGREEMENT
IS
SELECT AGREEMENT_SERIAL
FROM VW_AGR_AGREEMENT
WHERE NUMBER0 = I_NUMBER0
AND TYPE_ID = I_TYPE_ID
-->and sub_number is null;
-->and sumb_number = s_sub_number
For the customer ID 123 I want to return Z1, for customer 678 I want to return S2 and for customer ID 345 I want 11
Problem is that I'm new to the concept of looping. I know how to write a function that accepts customer_id as a value write a cursor and then check IF hierarchy = 1 the return FUNCTION_CODE IF hierarchy - 2 THEN ...
but I need something more universal as some of the customers may have hierarchy function 1 and that would be the top one for him but others might have function of hierarchy 10 as top and checking all of the possibilities using if would be just stupid. So how to write something universal ? And of course if function did not find any customer_id then return null.
I've seen several code samples that show how to return a REFCURSOR from a Stored Function, but when I try it with C# it gives me allways WRONG NUMBER OF ARGUMENTS or somehing like that.
I presently don't have my code in here, but it is something like this:
I'm trying to debug this function to get the desired results. See attachment for the function code and the test data insert script.
----Create Test Table CREATE TABLE VC_WORKINGDAYS ( WK_ID number NUMBER(10,0), WK_DATE DATE, );
-- Insert test Data INSERT INTO VC_WORKINGDAYS_1 VALUES (308, '25-MAR-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (316, '06-APR-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (324, '18-APR-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (332, '03-MAY-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (340, '13-MAY-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (348, '25-MAY-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (356, '06-JUN-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (364, '16-JUN-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (372, '28-JUN-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (380, '08-JUL-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (388, '20-JUL-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (396, '01-AUG-11'); INSERT INTO VC_WORKINGDAYS_1 VALUES (404, '11-AUG-11');
SQL ----- Result Should be WHY SELECT (VC_CALC_WD_DATE(LAST_DAY(TRUNC(SYSDATE)),1)) FROM DUAL 14/JUL/10 15/JUL/10 is 1 working day from today SELECT (VC_CALC_WD_DATE(LAST_DAY(TRUNC(SYSDATE)),2)) FROM DUAL 14/JUL/10 16/JUL/10 is 2 working days from today SELECT (VC_CALC_WD_DATE(LAST_DAY(TRUNC(SYSDATE)),3)) FROM DUAL 14/JUL/10 19/JUL/10 is 3 working days from today
Attached File(s)
create_Function.zip ( 6.39K ) Number of downloads: 1
DECLARE cnt number(10); BEGIN SELECT COUNT(*) INTO CNT FROM TBL_ADDRESS WHERE ADDRESS_ZIP IN (SELECT * FROM TABLE(MY_PACK.STR2TBL('46227'))); DBMS_OUTPUT.PUT_LINE (cnt); END;
MY_PACK.STR2TBL() is a function which takes '|' delimited string, extracts values and returns a table of zipcodes. The function works fine and returns 46227 but the count returned is 0 instead of 280(count returned by replacing inner select with '46227').
I am trying to run a dynamic select statement form a function and return the result into a variable, everything goes fine but the return is always null!
CREATE TABLE AFESD.MAJOR_ACCOUNT ( NUMBER0 NUMBER(2) NOT NULL, SHORT_NAME CHAR(35 BYTE) NOT NULL, FULL_NAME CHAR(50 BYTE) )
--Actually any table can do
CREATE OR REPLACE FUNCTION F_GEN_SELECT_INT (S_APP_USER IN VARCHAR2, I_MODULE_ID IN NUMBER, S_TABLE IN VARCHAR2, S_COLUMNS IN VARCHAR2) RETURN NUMBER AS I_RETURN NUMBER; S_SQL VARCHAR2(300); --S_DB_ERROR VARCHAR2(100);
[code]....
B.S. I didnt delete the commented lines to have your review comments.
I have a problem when trying to create a PLSQL function based on an XML extraction query.
I have three dummy tables:
SQL> get create_address 1 create table ADDRESS 2 ( 3 id NUMBER not null, 4 house_number NUMBER, 5 house_name VARCHAR2(20), 6 street_name VARCHAR2(30),
[code]....
And the following dummy data for these:
1 insert all 2 into ADDRESS (ID, HOUSE_NUMBER, HOUSE_NAME, STREET_NAME, CITY, COUNTY, POSTAREA, POSTSTREET) 3 values (1, 1, '', 'Tube Street', 'Norwich', 'Norfolk', 'NF12', '2DF') 4 into ADDRESS (ID, HOUSE_NUMBER, HOUSE_NAME, STREET_NAME, CITY, COUNTY, POSTAREA, POSTSTREET) 5 values (2, 5, '', 'Dave Street', 'Edlington', 'Kent', 'CT34', '8GH') 6 into ADDRESS (ID, HOUSE_NUMBER, HOUSE_NAME, STREET_NAME, CITY, COUNTY, POSTAREA, POSTSTREET)
[code]....
So far so good then. But, what I want to create is a function where I can pass in an id value and return the corresponding XML CLOB.
So I try, very simply, this:
SQL> get get_xml_data 1 create or replace function get_xml_data(p_id in number) return clob is 2 Result clob; 3 begin 4 select xmlroot(xmlelement("HomeData",
[code]....
And, alas, i'm greeted by this:
SQL> / Warning: Function created with compilation errors. SQL> sho err Errors for FUNCTION GET_XML_DATA: LINE/COL ERROR -------- ----------------------------------------------------------------- 4/5 PL/SQL: SQL Statement ignored 24/63 PL/SQL: ORA-00932: inconsistent datatypes: expected NUMBER got - SQL>
I've tried to redo the query in several different ways but so far nothing.
I am using the below function to return a blob (CSV) content, this is working fine..But i need to modify this function to display headline for the report and fixed width column in CSV ( then user no need to expand the each and every column ).
create or replace function GET_BLOB ( p_query varchar2 ) return blob as
Application Express 4.1.1.00.23 ( plus all earlier versions that I've ever used)
When using the wizard to create a Validation of type "PLSQL Function returning Boolean", why is it mandatory to enter a value in the text field "Error Message" on the screen that follows? This message is never used as the message actually displayed comes from a PLSQL return statement.
POSTCODE_TO_LAT_LNG_GM_API(postcode IN VARCHAR2, lat OUT NUMBER, p_long OUT NUMBER)
to convert a postcode into lat/long values. I then need to add them to the returned SQL statement so I used the string concat operator || with to_char but it comes up with this error when I try to apply the changes: Query cannot be parsed within the Builder. If you believe your query is syntactically correct, check the ''generic column'' checkbox below the region source to proceed without parsing.
ORA-00936: missing expressionh4.
h4. btw I'm using Oracle 11g release 11.2.0.3.0 and Apex version 4.1.1.00.23
I have a dynamic query stored in a function that returns a customized SQL statement depending on the environment it is running in. I would like to create a Materialized View that uses this dynamic query.
I have a view, below, which does few left outer joins to the same V_MARKET view to get data i need. When I run SQL by itself, ut runs pretty fast, 2-5 seconds. But when I do "select * from V_DEPT_DATA where busines_date = '01-APR-10'", it takes more than 10 minutes to run. I added all needed indexes and still have problems with it .
CREATE OR REPLACE VIEW V_DEPT_DATA AS SELECT v1.business_date , v1.division , v1.department , v1.account , en.trader , [code]........
I'm converting a SQL Server db to Oracle 10g. So far it's going pretty well. However, I've hit a significant performance snag trying to run queries against the converted view whose SQL is below. In SQL Server it runs pretty quickly, 10-15 secs. This query presently returns about 1.7 million records. code below, and assuming I've done nothing to optimize the database or the objects involved,
BS ------------------ CREATE VIEW DST_TMP_VIEW_ACCT_XACTN_CRN AS SELECT CUSTACCNUM, FUNDID,
The scale of the tests that generate the following scenario is not huge right now, only 50 users simulated (or you can think of them as independently running threads if you like). But here is the crunch, the queries generated (from generic transaction layer) are all running against a table that has 600 columns! We can't really control this right now, but this is causing masses amounts of IO (5GB per request) making requests queue for disk availability (which are setup RAID 0/1); its even noticable for as few as 3 threads.
I have rendered the SQL on one occasion to execute in 13 seconds for a single user but this appears short lived as when stats were freshly gathered it went up to the normal 90-120 seconds. I've added the original query to the file, however the findings here along with our DBA (who I trust implicitly) suggest that no amount of editing the query will improve the response times, increasing the PGA/SGA (currently 4/6GB respectively) will only delay the queuing for a bit and compression can work either. In short it looks as though we've hit hardware restrictions already for this particular scenario.
As I can't really explain how my rendered query no longer takes 13 seconds, it's niggling me that we might be missing a trick.So I was hoping for some guidance on possible ways of optimising these type of queries against such wide tables, in other words possibilities that we haven't considered...
I have a field in a table that is declared in the CREATE statement as an INT datatype. However, when I query that table using vb.net, the value comes back as a decimal.
How do you declare a field in Oracle as a true integer data type?
Using Oracle SQL Developer 2.1.1.64 to run the queries & Oracle 11g.
I have two numbers in two colomns of an oracle table(colomn a & colomn b). I am trying to divide colomn a/colomn b and putting the results in colomn c & also in colomn d (all in the same table) using update commands
Eg: UPDATE MTOTABLE_PWELD pw SET pw.WELDO=(pw.pipe_length/12000);
But here is the real issue. In colomn d I only need the integer portion of the division value.
For example , when I divide colomn a/colomn b , let us assume that we are getting a value of 2.56. Then I want the value of 2 to go to colomn d.
I tried round((colomn a/colomn b),0). But it rounds off 2.56 to 3. I dont want that. I need the exact integer portion of the value to be seperated.
F1 F2 F3 ---------- ---------- ---------- 1200015 0 1200.015
In above result F3 represent the actual result, which is nearest value where mod returns the 0, but i want nearest integer value which is 1206. how it is possible. In above case consider 1200 as Kgs and 45 as Grams.
Recent events at work are forcing me to take a much closer look at hash joins in an attempt to understand them much deeper than just on the surface. But my question today is maybe simple. I have done lots of reading and can't for the life of me figure out how to get more memory to my HASH JOINS.
is there are way to get around this limit of 2GB on a box that has 64GB with some 20gb not in use?
1) my databases are all using workarea_size_policy=AUTO
2) I am not afraid to go back to =MANUAL and set my own work area sizes.
3) It seems I cannot set HASH_AREA_SIZE to more that about 2GB.
BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production PL/SQL Release 11.2.0.2.0 - Production CORE 11.2.0.2.0 Production TNS for Solaris: Version 11.2.0.2.0 - Production NLSRTL Version 11.2.0.2.0 - Production 18:40:31 SQL> alter session set hash_area_size = 6000000000 ; alter session set hash_area_size = 6000000000 * ERROR at line 1: ORA-02017: integer value required
I know there is a limit of about 2GB on my box for HASH_AREA_SIZE and setting it to 2GB works fine. But it is still not enough.
18:50:22 SQL> alter session set hash_area_size = 2147483647; Session altered. Elapsed: 00:00:00.23
is there are way to get around this limit of 2GB on a box that has 64GB with some 20gb not in use? Using hash_area_size and 2GB, I get better performance than with my current PGA_AGGREGATE_TARGET doing the allocation for me.
I think I'd like to get as much as 20GB to specific sessions for hash joins but maybe I am pipe dreaming?
NAME TYPE VALUE ------------------------------------ ----------- ------------------- _pga_max_size big integer 1258280K pga_aggregate_target big integer 6G
I'm currently doing migration from Oracle 10gR2 RDF to Oracle 11gR2 Semantic Technology.I followed the steps on the documentation and successfully created the network using the following:
----- EXECUTE SEM_APIS.CREATE_SEM_NETWORK('rdf_tblspace'); CREATE TABLE rdf_network_trace (id NUMBER, triple SDO_RDF_TRIPLE_S); --Created SEQUENCE andTRIGGER FOR rdf_network_trace id [code]....
when I looked at my Node Ids, they were like +635762253807433724+, +6118969225776891730+. The problem is, I am not the one who is assigning Node Ids, They were automatically generated when inserting TRIPLE data to the rdf table.
In a pl/sql procedure, when I am doing an update, I need the old value to be returned and stored in a local variable, so that the same can be used for future purpose.
Note : I know the "OLD:" option is present when we use TRIGGER, but in my case , the table I am updating is a old table and I am not permitted to create a trigger for it.
create table testing ( id number (10), key number (10) ) insert into testing values (1,10) insert into testing values (1,10) insert into testing values (2,10) insert into testing values (2,20) insert into testing values (3,10)
i got a table(deptid, deptname, address,city,zip, state, other columns) i want to write a query to determine any error(records with different values) because i expect all records grouped-by(deptid, deptname, address,city,zip, state) to have the same deptid(pls note that deptid isnt unique),
or a specific deptid should have only one record based on the grouping (deptid, deptname, address,city,zip, state),
I have a table which lists previous jobs, whcih has monthto,yearto, monthfrom and year from fields. I am trying to find the most recent job (of which they might be multiple ending on the same month) Initially, i did the following:
ran a sub query to find the most recent (employee id, max (yearto * 12 + monthto), then another query where I got a list of the most recent jobs, and returned the first one using rownum = 1 (note this may be inconsistent between runs as thee rownum is calculcated before nay ordering clause. This worked, but i figured using the first function might be better as it gives an order
select employee_id from (select employee_id ,max(NVL(yearto,0) *12 + NVL(monthto,1)) KEEP (DENSE_RANK FIRST ORDER BY emloyer) as latest from employees group by employee_id;
but this seems to return more than one entrty:
table date below: drop table employee_list; drop table employee_historic; [code]...
What is the best way to return a single row, if the primary key is not available / applicable.
