SQL & PL/SQL :: How To Obtain Data Returned By Function When Executed Using Dynamic Query
May 25, 2011
I'm attempting to use dynamic SQL to execute a function that returns a user-defined collection. The problem is that I don't know how to use dynamic SQL to handle user-defined types...or if this is even possible?
The code I have is as follows:
CREATE OR REPLACE PACKAGE qi_test IS
TYPE typ_qi_data IS RECORD(
iQIFlag NUMBER(1),
iIPFlag NUMBER(1),
iRiskIndicator NUMBER(1),
iDenominator NUMBER(8),
iNumerator NUMBER(8)
[code]........
I want to be able to execute the above function using dynamic SQL. Initially tried:
DECLARE
f2_data qi_test.typ_qi_data_tab;
BEGIN
EXECUTE IMMEDIATE 'begin :1 := qi_test.get_f2_data; end;'
USING OUT f2_data;
[code]......
...but this just produces "PLS-00457: expressions have to be of SQL types". So it looks like I can't do it this way if the returned data type is user defined. I know it would be easier in this instance to just use something like:
f2_data := qi_test.get_f2_data;
...rather than EXECUTE IMMEDIATE, but it's the principle that I need to get right as it forms part of a much bigger piece of work.
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.
Orcl Ver: 11g R2. I am leveraging the Oracle's pipelined table function.It's working fine for static SQL.
create or replace package test13_pkg as type r_disc_req is record(disc_line_id number,
req_id number); type t_disc_req is table of r_disc_req; function F_GetDiscReq return t_disc_req pipelined; procedure P_ProcessDiscReq;end; CREATE OR REPLACE PACKAGE BODY test13_pkgAS FUNCTION F_GetDiscReq RETURN t_disc_req PIPELINED IS lo_disc_req r_disc_req; BEGIN FOR r_row IN (SELECT disc_line_id, req_id FROM edms_disc_lines_stg WHERE ROWNUM < 10) LOOP lo_disc_req.disc_line_id := r_row.disc_line_id; lo_disc_req.req_id := r_row.req_id; PIPE ROW (lo_disc_req);
I need to create a function where in data from 5 rows is clubbed into one row. Like this I have around 425 rows which should be clubbed to 85 rows. Requirement is similar to pivot but not exactly like a pivot as different columns need to be taken from those 5 rows. This is for reporting purpose in order to get data in the desired report format.
SQL mentioned below works fine. It does return data.When below code is used as a normal procedure with OUT parameter as Index by table of Record type code works fine. It returns data. Functionality is met. But when used as a pipeline function, it returns no data.
Below code gets compiled but returns nothing. I didn't find anything on Google or any website for same.
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
I have a business need to have a db function that would construct and return a (temporary) CLOB value.
here is its sample code:
create or replace package PKG_TEST_CLOB as function FN_TEST_TEMP_CLOB return clob;
[code]....
when this function is invoked from a SQL Statement...
*** select PKG_TEST_CLOB.FN_TEST_TEMP_CLOB from dual; ***
... the NOCACHE_LOBS counter in V$TEMPORARY_LOBS for my session is incremented by 1
when this function is invoked via a PL/SQL block...
*** declare l_clob clob; begin select PKG_TEST_CLOB.FN_TEST_TEMP_CLOB into l_clob from dual; end; / declare
[code]....
... the counter doesn't budge
In real life, this function will be used by a Reporting Tool (cognos) via SQL. I tested it, and it seems that it is allocating a new temp lob segment with every invocation.
Currently, I'm reading the online book Oracle Concepts, Chapter 3: 3 Indexes and Index-Organized Tables, section: Reverse Key Indexes in order to understand this topic.
As I understand for each pair of (key, rowid) in the index structure, the rowid for each row in the table obviously remains the same but the bytes of the key are reversed before the key is stored. So for example on a 32 bit machine (just an example) a key = 10 AB CD EF will be stored as FE DC BA 01 , am I right?
According to the documentation, this becomes interesting in RAC environments in order to remove a hot spot from the index (when multiple instances repeatedly modify the same block) with the disadvantage that in some cases there cannot be Index Range Scan any more as data in the index is not sorted by column key when it is stored.
I was just curious to see how bytes of each key are reversed and after a bit googling I found an article where Tom Kyte shows with an example by using dump function (which as I understand gives the internal representation of a given expression) the difference in the sequence of bytes. Here is the link
[URL]
So based on his instructions I tried to do my own test, yet I don't get the same result, that is, the bytes are not reversed for me once we rebuild the index by REVERSE key word.
I'm going to write down here the test that I did, where is/are my error(s)
Test Case: (I use a copy of the employees table in hr sample schema) SQL> CREATE TABLE emp_test AS SELECT * FROM hr.employees; Table created. SQL> CREATE INDEX emp_test_idx ON emp_test(first_name);
[code]...
Now, a test SQL Query using the index we've just defined (just for giving an example)
SQL> SELECT first_name, 2 dump(first_name, 16) as dump_result 3 FROM emp_test 4 WHERE first_name = 'Kelly';
FIRST_NAME DUMP_RESULT -------------- ---------------------------------- Kelly Typ=1 Len=5: 4b,65,6c,6c,79
[code]...
So, according to the above Execution plan, Oracle does an Index Range Scan using the index that I defined on my table that is, emp_test_idx. According to the output of dump, the key (first_name) in that index is stored (in terms of bytes) as 4b,65,6c,6c,79
Which as we can see corresponds to the first name 'Kelly', the first name we specified in the above SQL query.
Now let's rebuild the index
SQL> ALTER INDEX emp_test_idx REBUILD REVERSE; Index altered. SQL>
Once the index keys have been reversed, I run the very same query in order to see the difference
SQL> SELECT first_name, 2 dump(first_name, 16) as dump_result 3 FROM emp_test 4 WHERE first_name = 'Kelly';
[code]...
So the second time after the index has been reversed, I still get the very same sequence of bytes, that is, 4b,65,6c,6c,79, whereas I expected to get 79,6c,6c,65,4b (that is, the reversed order of the initial bytes sequence)
I cerated a function with two date parameters. I am using these parameters in query. The function created successfully.But when i executed this function, it throw following error:
ORA-01840: input value not long enough for date format in function
I searched on internet, but not found the proper solution. n with example.Table column is varchar2 type and values store in 'RRRR/MM/DD' format.
I have a requirement like getting list of values from one table and inserting them into another table.I have tried with sub querying but didn't worked out because the select query is returning multiple values.
how to proceed further and the ways how can I write this requirement.
1 select s.reg_no,s.course_code, 2 s.section src_sec,a.section a_sec,a.att_date,a.att_flag 3 from attendance a ,src s 4 where a.semester_code=1 5 and a.semester_year=2013 6 and s.semester_code=1 [code]....
is it possible to use the records returned by a query as column names in a select query.
select (select column_name from dba_tab_cols where table_name='V_$DATABASE' and column_name like '%CONTROL%') from v$database; * ERROR at line 1: ORA-01427: single-row subquery returns more than one row
I have a query which is executing fast in dev env,but very long time in qa env.What is the criteria when this behaviour occurs.Though qa is having more data than dev.But still it is taking long time for 1 rows also.When I am using the query rownum<=1.So What to check for this.
I am using an query to fetch the data from oracle DB and fill dataset using oledb dataadapter in ASP.net.When i run the same query in PL/SQL i am getting 14952 records,but when i am filling it to dataset i am getting only 13700 records.
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'm trying to execute a dynamic sql that calls a function. But that function has inserts and deletes inside and this way it can't be called through a select statement. And to be worst, it has an other problem, my function uses a record type as parameter.
My code (sample): ----------------- DECLARE type r_parameters is record (cd_query cons_query_param.cd_query%type, cd_usuario cons_query_user.cd_usuario%type, nr_param cons_query_param.nr_param%type, vl_param varchar2(2000),
( I have a function called numbers only in page 0 )
what I would like to do , to make it more maintainable is to remove all the calls in the element attributes of each column
and put it in 2 dynamic actions how would I go about this ?
I have tried using jquery selector of input:text to call javascript code on both events , Get focus and Key Press for every text box but its not working .
in sqlplus I get the returned rows of this table. But this is not the case when I do in plsql the following:
create or replace procedure myproc is
a varchar2(50); begin a := 'select * from mytable'; execute immediate a; end;
there is nothing I can see. Is there a way to catch this result set and see it on the screen? Something that is not creating new structures like cursors, etc?
How do I get my list of user session info? I thought there was a user_session_parameter view or something? Basically, I did an ALTER SESSION ... and want to verify it was set correctly.
After the Data is loaded, we see data look like the above.
(1) Always COL3 column name have data value as 'Gen1' which is the indication for us from where data starts. But Gen1, Gen2, Gen3 etc... is dynamic. ie. This month we get gen1 and gen2 columns followed by null value in a column. Next month we get gen1,2,3,4 followed by null column. (2) Null Column indicate us that there is a break in the column. (3) Then next we need to look for next group of data (Monthly) and then insert into the same table again with different sheet_name column. (4) Next for Quater and then YTD. None of the column Values are fixed and its all dynamic.
If you load the below data, you will come to know what i am looking for. I tried using UNPIVOT. But couldnt able to achieve it. Is there an option to do it in sigle query? or Do I need to go for Stored Procedure?
Insert into TST_TBL (JOB_DETAIL_ID, SHEET_NAME, COL1, COL2, COL3, COL4) Values (100, 'Wire_1', 'Gen1', 'Gen2', 'Gen3', 'Gen4'); Insert into TST_TBL
I need to obtain the top 2 departments in terms of total salary.
I have the following tables (Dno corresponds to DeptNo). I've found tutorials for obtaining the salaries of the top three employees, and summing the salaries for each dept. is easy, but I can't seem to combine the two.
DNo Fname Salary 2 Tom 10000 3 Mike 20000 2 Harry 30000
DeptNo DeptName 1 Administration 2 Special 3 Finance
Is it possible to define a cursor using dynamic sql. Reason being is, I want to fetch data from 4 diffrent tables but dont want 4 diffrent cursors for this purpose.
I have a procedure that takes an in parameter . Cursor is declared in this procedure. Again is there a way to use dynamic sql so that this cursor declared in procedure uses all 4 table one at a time i.e cursor c1 is select * from table_name(I want this table name to be updated every time with new table name).
I'm trying to replace the variable value v_tblname in dynamic SQL. But not able to escape the single quotes character.
DECLARE v_sqlcols VARCHAR2(2000); v_sqlcols1 VARCHAR2(2000); v_tblname VARCHAR2(50) := 'DEPT'; BEGIN v_sqlcols := q'[SELECT LISTAGG(COL,',' ||CHR(10)) WITHIN GROUP (ORDER BY COL) FROM (
i have writen it in static form by using instr,substr.But i m having difficulty in making it dynamic by using select statement.I have to make it for retrieving data from database.
small piece of PL SQL code. how to make this query.Requirement is that a concurrent program is run with parameters and one of them i_num_org_id is non mandatory so it can come as NULL...Now in an existing code which i have to change, it uses a query as
SELECT xyz FROM abc_table WHERE <various conditions> AND DECODE(i_num_org_id,NULL,1,table.organization_id) = NVL(i_num_org_id,1);
Now with the above way, if the program is run with some value for i_num_org_id or run as normal query (with NULL as the value) inside a PLSQL procedure/package then it runs fine.This query if you run in Toad etc then too it will work fine but if it is made a dynamic SQL and then used as either EXECUTE IMMEDIATE or opened as a cursor then we get a "Missing expression". I created this small anonymous block to test this and this will go into missing expression error
declare l_num_org_id NUMBER := NULL; l_temp VARCHAR2(100); l_sql varchar2(1000); begin l_sql := 'SELECT '||''''||'abcd'||''''||' [code].....
how i can reformat this query so that even if NULL value comes for i_num_org_id then it is handled.I am aware about CASE but that cannot be used in WHERE clause i guess.
