Windows :: Returning REF Cursor From PL/SQL Function?
Apr 5, 2011
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:
The following code is indicative of what I'd like to do (as in not correct at all ). Would there be a more immediate way to accomplish this other than executing a SELECT statement after the UPDATE?
-- Incorrect indicative example 1.
DECLARE v_cur SYS_REFCURSOR; BEGIN UPDATE table1(f1, f2) SET ('v1', 'v2') WHERE f3 = 'v3' RETURNING <updated_rows> INTO v_cur END;
-- Incorrect indicative example 2.
DECLARE v_cur SYS_REFCURSOR; BEGIN OPEN v_cur FOR UPDATE table1(f1, f2) SET ('v1', 'v2') WHERE f3 = 'v3' END;
I am creating a db function to select * from table_name to be used by the application for retrieving lookup data. I found many examples for how to return cursor as a result of executing a dynamic sql but don't know the optimum way.
following is my current trial:
CREATE OR REPLACE PACKAGE types AS TYPE Cursortype IS REF CURSOR; END; /
CREATE OR REPLACE FUNCTION F_GEN_SELECT_CURS (S_APP_USER IN VARCHAR2, I_MODULE_ID IN NUMBER, S_TABLE IN VARCHAR2) /*This function maps S_ACC_MAJOR_ACCOUNT_LIST CoolGen service [code].......
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 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
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 am strugling hard to pass a cursor to my function as in parameter.here is my code
Function migrate_audits (sys_audit_ids SYS_REFCURSOR ) return number; Function migrate_audits (sys_audit_ids in sys_refcursor ) return number is v_return number; v_sys_audit_id number; begin LOOP FETCH sys_audit_ids INTO v_sys_audit_id; [code]....
passing cursor to a function is not possible in oracle? what other option I have to pass collection to the function ?
I have code inside function ..... cursor cur1 is select * from sarchkler where sarchkler_appl_no = in_appl_no begin select max(saradap_appl_no) into in_appl_no from saradap; for rec1 in cur1 loop ...... my question I get variable for cursor after cursor declaration
declare type osd_refone is ref cursor; osd_ref osd_refone; l_status number; [code]......
abc_reports in this pack "ab_report" it is the function it having the ref cursor as out parameter . when am executing the above anonymous block am getting the below error,so how can i print the out ref cursor data in my block.
ERROR at line 8: ORA-06550: line 8, column 12: PLS-00221: 'OSD_REF' is not a procedure or is undefined ORA-06550: line 8, column 3: PL/SQL: Statement ignored
To display highest marks,least marks,average marks,total marks of the student name entered.
desc stud; Name Null? Type ----------------------------------------- -------- ---------------------------- SID NUMBER NAME VARCHAR2(20) M1 NUMBER M2 NUMBER
I have strange problem when i try to return a ref cursor holding data from a select on a oracle global temporary table. If i iterate through the cursor , i can see the values but the function as such returns nothing through the ref cursor. I tried the temporary table as both delete on commit and preserve on commit
create or replace PACKAGE BODY BILL AS
FUNCTION FILTERI RETURN BILL.refcursor IS testcursor BILL.refcursor;
ttstatus INT; iSuccess INT; returns INT; TruncatedSQL1 VARCHAR2(32767); BEGIN [code].........
I have Two cursor record block..which is attached in form..
My TASK IS
In my first Block, When DBCR Column = 'D' Then in backend this column value should be save as a '1' WHEN DBCR Column = 'C' Then Then in backend this column value should be save as a '2'
My Both Field is on Data Block...
In Property palette of this field can we write any decode condition..so it reflects directly on database.
I'm dealing with an ORA-1000 error in a Pro*C application where all the cursors are correctly closed (or so it seems to me).
Here is the code for a simple program which reproduces the problem:
Each cursor is opened in a PL/SQL package:
CREATE OR REPLACE PACKAGE emp_demo_pkg AS TYPE emp_cur_type IS REF CURSOR; PROCEDURE open_cur(curs IN OUT emp_cur_type, dept_num IN NUMBER); END emp_demo_pkg;
[Code]....
While testing the initialization parameter open_cursors is set to 50.
It's my understanding that Oracle doesn't close the cursors until it needs the space for another cursor, which in my test case seems to happen when I enter a value of 50 or bigger for "number of loops". To see how oracle is reusing the cursors, while the test program is running I run SQL*Plus and query v$sesstat for the session that's running the test with the following sentence:
select name, value from v$sesstat s, v$statname n where s.statistic# = n.statistic# and sid = 7 and name like '%cursor%';
Even before I enter a value for number of loops I can see that the session opened 4 cursors and closed 2 of them:
NAME VALUE ---------------------------------------------------------------- ---------- opened cursors cumulative 4 opened cursors current 2
Entering a value of 5 for number of loops yields
NAME VALUE ---------------------------------------------------------------- ---------- opened cursors cumulative 11 <----- 7+ opened cursors current 8 <----- 6+
With a value of 30
NAME VALUE ---------------------------------------------------------------- ---------- opened cursors cumulative 36 <----- 25+ (apparently, Oracle reused at least 5 cursors) opened cursors current 33 <----- 25+
With a value of 47
NAME VALUE ---------------------------------------------------------------- ---------- opened cursors cumulative 53 <----- 17+ opened cursors current 50 <----- 17+
Now I reached the upper limit set by the initialization parameter open_cursors.
Entering a value of 48, I get the ORA-1000 error.
ORA-01000: maximum open cursors exceeded ORA-06512: at "SCOTT.EMP_DEMO
Since I open and close the cursor in the same loop iteration, I expect to find in every iterarion 1 explicit cursor and a number of implicit cursors (the PL/SQL call along with the so-called recursive cursors), but I don't expect the sum of all of them to be greater than 50. If my understanding is correct Oracle should be reusing the 50 cursors previously marked as "closeable", not raising the ORA-1000 error.
-define a cursor with bind variables -get a cursor record from these cursor -and pass the bind variable in the OPEN clause
Did'nt succeed as shown in the example.
SET SERVEROUTPUT ON SIZE 900000; DECLARE --works fine CURSOR c1 IS SELECT * FROM USER_TABLES WHERE rownum<3; --doesn't work --CURSOR c1 IS SELECT * FROM USER_TABLES WHERE rownum<:1; crec c1%rowtype; BEGIN --works fine OPEN c1; --isn't possible ? --OPEN c1 USING 3;
