SQL & PL/SQL :: Create A Function Which Can Be Used In A Select Query?
Jun 11, 2008
I have a table structure like :-
Create table test(A varchar2(50),B NUMBER);
The data in that table is like that:-
A B
----------------------
2*3
2*4*5
4*5
column B contain no data.
I want to create a function which can be used in a select query,and the output should come like that :-
A B
----------------------
2*3 6
2*4*5 40
4*5 20
Means column B contains the resultant value of column A.And the above output should come through a select statement.You can use any function inside the select statement.
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.
SELECT rp.id r_paper_id, COUNT(*) created, COUNT( CASE WHEN a.approved_yn = 'Y'
[code]....
But it fails, saying that 'single-row subquery returns more than one row' when I introduce the 'unique_users' clause. The remaining fields of the output are correct.
I need to incorporate a count of the number of units from TableG that have a certain status. I tried the following but when I tried to run it, I get an error saying that it's not a Group By expression -the red part is highlighted in TOAD.
select B.desc "Location", F.desc "Source", A.amt "Amount", sum(G.G_CNT) "No. Units", (select count(*) from TableG G2 where G2.D_ID = D.ID and G2.status = 10 group by G2.D_ID)"Count", c.desc "Status" [code]....
Any thoughts how I can incorporate a query in my select of attributes?how to Group By something.
how do I create a procedure for a SELECT query like the following?
When I create a procedure; I get an error "Error(80,1): PLS-00428: an INTO clause is expected in this SELECT statement" PROCEDURE MyProcISBEGINselect 'Dakota' as ALIAS ,A.StartDate ,B.EndDatefrom Customer A ,Clients bwhere a.cType = b.cTypeand b.Active =0ORDER BY StartDate, EndDateEND MyProc;
BEGIN IF UPPER(:P23_SERVICE_TYPE) like 'GUIDE%' THEN SELECT NAME D, CODE R FROM SPECIAL_SERV_MAS WHERE NVL(ACTIVE_FLG,'N') = 'Y' AND NVL(GUIDE_FLAG,'N') = 'Y' and CITY_CODE LIKE NVL (:P23_CITY_CODE, '%')
[code]....
When i put this code in my LOV Select list Section then display me Error
Not Found The requested URL /pls/apex/f was not found on this server.
Oracle-Application-Server-10g/10.1.2.0.2 Oracle-HTTP-Server Server at tidevserv1 Port 7777
Is there a technique to getting a Top-N query to work as a sub-select in a larger query -or- is there another way to generate Top-N like results that works as a sub-select?
Background:
We have a large query that is being used to build an export from a legacy HR system to a new one. Amount the data needed in the export is the employees primary phone number.
The legacy HR system allows multiple phone numbers to be stored in a simple table structure:
SELECT emp_id, phone_type, phone_number FROM employee_phones
The new HR system does allow for multiple phone numbers, however they need a primary phone number identified and stored with the employee master information. (Subsequent phone numbers get stored in alternate table.)
From a business perspective, we have decided that if they have a HOME phone in the legacy system that should be the primary in the new system, if no HOME phone, then WORK, if no WORK then CELL.
That can be represented as:
SELECT * FROM employee_people_phones WHERE emp_id = '46021' ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')
SELECT * FROM (SELECT * FROM employee_people_phones WHERE emp_id = '46021' ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results WHERE ROWNUM = 1
SELECT phone_number FROM (SELECT phone_number FROM employee_people_phones WHERE emp_id = '46021' ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results WHERE ROWNUM = 1
phone_number ------------------- 1111111111
However, when the Top-N query is added as a sub-select in a larger query using the employee id from the larger query (WHERE emp_id = export.emp_id), it fails saying that �export.emp_id� is not a valid id.
(SELECT phone_number FROM (SELECT phone_number FROM employee_people_phones WHERE emp_id = export.emp_id ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results WHERE ROWNUM = 1)
1.Any way around this? Is it possible to put a Top-N (with a WHERE clause using data from the main query) in a sub-select?
2.Any alternatives (other than Top-N) to delivering a ROWNUM=1 result with a �custom� ORDER BY statement?
Other Notes: Yes, we know we could do two queries in the data conversion first deliver the bulk data to the target table, and then update with the phone numbers. However, for multiple reasons, that is less than desirable.
I am trying to use decode function in sql and inside decode function can I use select statement ?
here is my sql
select we.wf_entity_id, decode(object_type_id, 1, select audit_number from ea_audit_general where sys_audit_id=object_id 2,'test', object_type_id ) from wf_entity we where
[code]....
see this
decode(object_type_id, 1, select audit_number from ea_audit_general where sys_audit_id=object_id 2,'test', object_type_id )
I'm writing a VPD function to be used for column masking. The predicate (WHERE-clause) it generates may take many different forms. In particular, it may contain inner-selects; for example,
"exists(select '*' from B where B.VAL = '123' and A.KEY = B.KEY)"
where A is the table that is associated to the VPD function, and B is some other table.
if this is OK for column masking? If not, my VPD function may sometimes work and sometimes fail, in unexpected ways.
The Oracle Database Security Guide (11g Release 1) says
Column-masking conditions generated by the policy function must be simple Boolean expressions, unlike regular Oracle Virtual Private Database predicates".
This seems to indicate that there are cases where a VPD function works for row-level security, but not for column masking.
an example of a 'regular Oracle VPD predicate' that doesn't work for column-masking?
im trying to select columns from different tables dynamically in a function . The parameter for the function will be table name and column id's, In this number of columns may vary . Is it possible to have dynamic %rowtype to store the cursor value in it.
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.
How to call a function with a row type return in an Oracle select statement.
For e.g. :
If I had this function with a rowtype return: ------------------------------ create function abc return xyz%rowtype is rec xyz%rowtype; begin select * into rec from xyz where col1 = n; return rec; end; -------------------------------- How could I use this in a select clause, as there is a multi column return by the function ?
i want to create a function that build a return xml (XmlType):
create or replace function plainLanguageSummary(nip varchar2,id number,code_language varchar2) return XmlType as
[Code].....
but in the compilation i got the following error :
Error(10,62): PLS-00103: Encountered the symbol "SELECT" when expecting one of the following: ( - + case mod new not null others <identificateur> <identificateur entre guillemets> <variable bind> avg count current exists max min prior sql stddev sum variance execute forall merge time timestamp interval date <un littéral de chaîne avec spécification de jeu de caractères> <un nombre> <une chaîne SQL entre apostrophes> pipe <constante de chaîne éventuellement entre guillemets avec indication du jeu de
he seems to not like the first "select" he encounter!.
i have a project that needs to have a identity number in the table.this is the table:
create global temporary table BOOK_INFO ( row_id number(5), BOOK_TITLE char(20), BOOK_AUTHOR char(15) ) on commit preserve rows;
i dont know how can i generate row_id, in sybase i can only set the datatype of row_id in IDENTITY and it will automatically generates number and as the transaction ended the row_id will automatically back to 1.
in oracle i tried to create sequence but it didnt back to 1 when the transaction/procedure ended.. Like for example if the procedure ended and the last row_id inserted in the table is 300 the next run of the procedure will start in 301. but i need to start in 1 in every run of the procedure.
Also, i tried to set the variable v_row_id to 0 and it increment by 1 as it insert in the table, but the problem is there are times that in 1 book_title there is more than 1 author. so the v_row_id of the book_title with more than 1 author is all the same.Here is my query:
insert into BOOK_INFO (select v_row_id, BOOK_TITLE, BOOK_AUTHOR from LIBRARY);
I am using a form which create function to calculate value using form_ddl. When I used this program from superuser it will calculate correct value but in other user it calculate wrong value. I gave 'Create Procedure ' privilege to user too.But still problem exist.
I need to implement a "Select All" function in a Data Block with All the Check boxes. It's a Database data block with 10 records to be displayed at a time. Check Box Items are in default layout. The requirement is when user checks/un-checks that select all check box which is placed on the left hand side of the other check boxes, it should select/deselect all the check box database items in that particular record.
I made this script but I still don't quite understand if the syntax is correct. I just wanted to create a function and call it in an anonymous block. I then wanted it to use a variable as a parameter in an iteration and output the variable every iteration. It's done basically but I know it's not 100% right. The fibonacci function looks like its going to loop an infinite number of times if the parameter is greater than 2.
CREATE OR REPLACE PACKAGE myPACKAGE AS CREATE OR REPLACE FUNCTION fibonacci (n BINARY_DOUBLE) RETURN BINARY_DOUBLE IS BEGIN IF n <= 2 THEN RETURN 1; [code]........
