SQL & PL/SQL :: Change Value That Function USER Returns
Nov 25, 2011
I have an existing database with several hundred tables and triggers on the tables in the schema S1. Most of the triggers are for storing audit information USER and SYSDATE in the respective columns.
We have built procedures what will accept incoming XML parameters from a BPMS application on the intranet which will have information about which table to update, which columns to update, what values to update and what the O/S user id is. The O/S user ids are mapped to oracle user ids in a specific table. Therefore when we receive the request we can easily figure out the oracle user id. The application always connects to the database using a specified user id S2.
The trouble is, the existing tables have triggers which read :NEW.userid := USER;and whenever a DML is fired from the procedure, the function USER always returns S2, since that is the user id the BPMS application connects to and therefore the audit columns do not capture the correct information as required.
The impact of changing all the existing triggers/procedures will be a mammoth task including regression testing and will certainly not be approved by the project sponsor.
override the value that USER returns? Using session contexts, etc? If so, we can possibly set it at the point of connect and have to do nothing else.
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Nov 6, 2010
I just think about write a function with gives me a searched string from table.
select col1, col2 from the_table
col1 col2
--------------------------
SMS yes
Melodies no
Java build
...
And I would like to make a function or something like that where input parameter is from col1 and result is col2. For instance:
select the_function('SMS') from dual;
Result: yes
how to write it?
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Oct 16, 2013
I am interested if there maybe exists any function that would return all source tables that are present in the given sql. For example function('select 'abc' from table_1, table2') would return a list containing 'table_1' and 'table_2'.
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Aug 3, 2012
I have an requirement to create an function which takes table or hierarchy of tables as input and returns xml output in hierarchy. Below given is the Tables hierarchy.
AAAA
----AAA
----BBB
----CCC
-------CC1
-------CC2
-------CC3
[code]....
Requirement: Initially input was table name and using table as the root node output should generate xml of all the records of child tables.But now requirement is to give the flexibility to user to select what hierarchy he needs i.e he may select AAAA, CCC and in the nodes C1,C2,C3 and C4 if he doesn't want C3 then that node should not be shown in output.
I have created Hierarchy table having 3 columns SI.No, ParentNode and ChildNode and entered the above hierarchy relation.
1. What is the best to way (design)to pass input parameter for the function.
2. How to generate hierarchy in xml using DBMS_XMLGEN
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Nov 30, 2012
The SAMPLE clause in the select statement works well in most cases, but we found in some instances the result is way off - between 200% to 700% discrepancy has been observed.
For example, we have thee tables with the following results:
Table1: 495,365,317 rows (20 cols, unique primary key present), SAMPLE ( 0.002018712182064212 ) returns 41,499 (about four times off - we expected about 10,000)
Table2: 3,350,864,539 rows ( 5 cols, unique primary key present), SAMPLE ( 0.00029843044634040336 ) returns 9,835 (this is good as it is close to 10,000)
Table3: 6,974,724,543 rows ( 5 cols, no unique primary key present), SAMPLE ( 0.00014337483779250091 ) returns 58,789 (about six times off - we expected about 10,000)
The tables got billions of rows, and that is why we want to do sampling. The sample percentage rate is computed to return about 10,000 rows in all three tables.On Table3, we ran the sampling three times in one occasion, and we got "58,570", "24,575" and "24,561"
I expected +/- 20% of variance, but 200% to 700% seems to be way too much.Once again, I stress that it does work well in most cases (another 3.4 billion table and numerous smaller tables we tested were well within +/- 5 percent of the target).I noted the presence of a primary key above because I read an article saying that the SAMPLE function relies on the existence of a primary key (which does not quite explain the examples above).Is this kind of spread something we should expect or is it a bug? Is the sampling rate too small for such large tables?
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Jul 6, 2012
oracle version 11gr2.In the below sample data column a,b if there is Two (2) consecutive numbers are transposed in column B from A it should return string 'true'.
with t as
(
select '123456789' a ,'123476581' b from dual
union all
select '123456789' ,'123465789' from dual
union all
select '332211' ,'332121' from dual
union all
[code]....
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Jul 13, 2012
On a Oracle 11g R2 I've a table function ( PIPELINED ) returning rows selected from a table.The first time the function is selected, in a session ( I've tried to disconnect and log in again ), it returns no rows.I've tried to log the call using DBMS_OUTPUT and from what I see the select on the table function returns no rows and no output is printed. So I presume Oracle is not calling the function.
The same function on a similar environment ( same db versions, patches and database structure ) works fine. The second environment is a production environment so it has more memory and some other settings enabled.
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Jul 26, 2011
CREATE OR REPLACE TYPE TEST_OBJ_TYPE IS OBJECT
(
TEST_ID NUMBER(9),
TEST_DESC VARCHAR(30)
)
/
CREATE OR REPLACE TYPE TEST_TABTYPE AS TABLE OF TEST_OBJ_TYPE
/
[code]....
I need to include the above function in a plsql package. How I can declare a object type and table type in a pks file? the syntax to include the above code in a .pks and .pkb file?
I got this code snippet online when I was looking for function that returns a table type. what exactly that Exception block does? delete the table when there is an exception, otherwise return the table type?
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Apr 24, 2012
I want to debug a function which returns the table of records. When I try to add the parameters and run the debug it gives the error as
PLS-00653: aggregate/table functions are not allowed in PL/SQL scope
if there is any way to debug the function which returns table of records.
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Mar 14, 2013
Is there an oracle function that returns the current fiscal year in format (2012/2013)?
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Jan 17, 2013
I would like a pl/sql function that returns the check digit of a 9-digit number?
Look at
[UR]......
For example number 109409714 (9 digits) should do check digit. I want validation of check digit, & want to return the check digit.
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Jul 13, 2011
I want to change the DEFAULT_ROLE column to NO for following user 'P10_DEMO'.
SQL> show user
USER is "BALA"
SQL>
SQL>
SQL> select name from v$database;
[code]...
how to do this ?
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Sep 9, 2010
OBJECTIVE: To allow a user to change their own password after logging into an application.
BACKGROUND: I have a stored procedure where I pass the userid, old password, and new password. The stored procedure contains the following ALTER statement:
EXECUTE IMMEDIATE 'ALTER USER :uid
IDENTIFIED BY :npwd REPLACE :opwd'
USING IN v_user_id, v_new_pwd, v_old_pwd;
where v_user_id, v_new_pwd, and v_old_pwd are the arguments passed to the stored procedure.
FACTS:
(1) The procedure compiles fine;
(2) During execution, SQLCODE returns "0" (i.e. zero);
(3) My userid does have permission to change my password and execute the stored procedure;
(4) At the time I call the stored procedure, I am successfully logged into the application with my userid and old password.
PROBLEM: When I try to login with the new password I get the following error: "ORA-01017 invalid username/password; logon denied".
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Aug 23, 2010
We have enable the alter log for audit purpose so the password will be display in the log which is not security. I try to use "password" to change password but very user got the error below.
SQL> password
Changing password for RUDEE
Old password:
New password:
Retype new password:
ERROR:
ORA-00604: error occurred at recursive SQL level 1
ORA-20014: -6502 ORA-06502: PL/SQL: numeric or value error
ORA-06512: at line 27
Password unchanged
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Jul 16, 2011
When i try to change the user account password, i get following error.
alter user bala
identified by Ju4hlsd2;
ERROR at line 1:
ORA-20178: ORA-20176: ORA-28003: password verification for the specified password failed
ORA-20007: Password cannot consist of sequences of 3+ characters from the userid
how to set the password based on the error.
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Jul 1, 2007
I have to change the visibility of text item when user click on check box.
If check box checked, item should be displayed only. On unchecked, hide.
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Apr 12, 2012
I have made a function to add two number create or replace function add_num(a in number, b in number) return number
as
begin
return a+b;
end;
/
i run it via
select add_num(2,5) from dual;
my question is how to call add_num in procedure.
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Jan 12, 2012
If a user defined function in Oracle may throw and catch exceptions depending on input, now does the Oracle logs the exception? Fundamentally we are asking if Oracle logs any random DML errors (not bulk operation). We hope not, as we do not want our client DBA get concerned. There might be many levels of settings in Oracle to log or not log. So if Oracle may log it depending on setting, how do we suppress it either at Oracle specific schema level, or function level?
This is my user defined function:
create or replace FUNCTION ISNUMERIC(char_in CHAR) RETURN NUMBER IS
n NUMBER ;
BEGIN
n := TO_NUMBER(char_in);
RETURN 1;
EXCEPTION
WHEN OTHERS THEN
RETURN 0;
END;
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Oct 14, 2010
can we use user define value (how to use '&') in nested function of a query ?
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May 24, 2011
Need a code which prevents the User from entering more than 30 characters in a field. Although the variable can accept more than 30 characters. My requirement is to validate the field by restricting up to 30 characters.
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Sep 26, 2012
In one of the interviews , I have attended the guy asked me to write a user defined function which will take the column name and list all the values .
For example
Table Name:Employees
Column Name: Employee_Name
Employee_name
Scott
Ivgun
Jack
Shane
The query should be in this fromat
SELECT col_agg(Employee_name) emp_name from Employees;
The output should be
Emp_names
scott,ivgun,jack,shane
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Apr 28, 2013
can i create the user-defined functions and use them in the FILTER clause in the sem_match function? there are some built-in functions for the FILTER clasue. however, only one function (DATATYPE(literal)) support for date/time in the built-in functions. i want to implement some user-defined funcitons in the FILTER clause which can check time intervals in ontology. there are some functions about valid time in the WorkSpace Manager such as WM_OVERLAPS, WM_CONTAINS,WM_MEETS, etc. so, can i write some functions using the these valid time functions in WM and use them in the FILTER clause?
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Nov 22, 2012
resolve issue while modified the user function code for returns the values as timestamps
---function code
create or replace
function fun_test_timestamp(P_HOUR varchar2) return varchar2
is
sql_stmt varchar2(1000);
begin
[Code].....
Input:-
select fun_test_timestamp('5') from dual;
Output:-
SELECT CURRENT_TIMESTAMP - INTERVAL '5' HOUR FROM DUAL;
Modified Fun Code:
create or replace
function fun_test_timestamp(P_HOUR varchar2) return timestamp
is
sql_stmt varchar2(1000);
[Code]...
Input:-
select fun_test_timestamp('5') from dual;
Output:-
ORA-00911: invalid character
ORA-06512: at "NETVERTEXTRUNK.FUN_TEST_TIMESTAMP", line 8
00911. 00000 - "invalid character"
*Cause: identifiers may not start with any ASCII character other than letters and numbers. $#_ are also allowed after the first character. Identifiers enclosed by doublequotes may contain
any character other than a doublequote. Alternative quotes (q'#...#') cannot use spaces, tabs, or carriage returns as delimiters. For all other contexts, consult the SQL Language Reference Manual.
*Action:
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Dec 25, 2011
when a user change or delete any record or row in forms data automatically move to other table because i want to compare old and new record.
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Aug 4, 2010
SQL> select greatest ( 1000,null) from dual;
GREATEST(1000,NULL)
-------------------
SQL> with t as
2 ( select 1 a from dual union all
3 select null from dual)
4 select max(a) from t;
MAX(A)
----------
1
Why greatest returns null ( as the greatest value among the list of values) as the greatest value while max returns 1 in the above case?
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Oct 26, 2010
I have to update a table by getting values from two other tables. While doing that the inner query returns more than one value. I am not sure how to implement the logic without returning more than one row in sub query.
My query:
update buf_office_str o
set o.manager_ident =
(select sp.ident
from se2_r_src_sourceperson sp ,
(select distinct director_name, team_name from buf_sales_dump )t
where SP.SRCNAME = upper(substr(t.director_name,instr(t.director_name,' ')+1,length(t.director_name))||', '||substr(t.director_name,1,instr(t.director_name,' ')-1 ) )
and o.office_descr = t.team_name
)
Basically the query gets the manager id from sp table where sp.srcname = t.team-name.
The office_descr should be equal to the team_name.
This is the logic I am working towards:
For each office, i get the office_descr and get corresponding team_name. Match the team's director_name (from table t) with the sp.name and return the employee's id (sp.ident) for that office_descr. I need to update all 50 offices with corresponding managerid for that office in buf_office_str table.
Is it possible to get done in one update? Or, does this need a plsql proc to do this logic.
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Dec 6, 2012
I am returning the ORA-01427 after running the query below. why I am returning the error and how to address it.
select b.value , b.name, p.value ......
(case when p.value <> 'G2' then null else (select c.oldvalue from ad_changelog c
where c.record_id = b.c_bpartner_id and c.ad_table_id = 291
and c.ad_column_id = 4216 ) end) as oldtradeName
from c_bpartner b, zz_receipt r, zz_recp_alloc a, m_product p, ad_user us
where a.c_bpartner_id = b.c_bpartner_id
and a.zz_receipt_id = r.zz_receipt_id
and us.ad_user_id = r.createdby
and p.m_product_id = a.m_product_id
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Dec 7, 2009
Just trying to update a table in which the sales amount is inserted when the sales amount is null.
I have
UPDATE ph2_customer_temp
SET sales_amount = (
SELECT sl.sales_amount
FROM PH2_CUSTOMER_TEMP pct
join
sales_limit sl
on substr(pct.site_code,1,2) = sl.state
where pct.credit_limit is null )
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Jan 10, 2012
I can't seem to wrap my head around this problem I'm having with a query. I need to update all rows in my ps_ntsr_gf_stufile tables with the concatenated values from the ps_classes_tbl table where a.CLASS_NBR = b.CLASS_NBR. I tried to limit it to emplid from the ps_stdnt_enrl table but no luck.
UPDATE ps_ntsr_gf_stufile a
SET a.CLASS_NAME = (SELECT CONCAT('SUBJECT', 'CATALOG_NBR')
FROM PS_CLASS_TBL b
WHERE a.CLASS_NBR = b.CLASS_NBR
AND a.STRM = '1118'
AND a.INSTITUTION = 'NT752')
WHERE a.EMPLID IN (SELECT distinct EMPLID FROM PS_STDNT_ENRL);
I'm still getting the ORA-01427 error.
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Mar 20, 2012
/* (SELECT A.TOTAL_ALLOCATED_AMT FROM CLS_ALLOCATION_HDR@LAMS_PROD A WHERE A.APPROVAL_DATE BETWEEN BCTH.TRAN_FROM_DATE AND BCTH.TRAN_TO_DATE
AND A.CUSTOMER_ID=BCTH.CUSTOMER_ID AND ALLOCATION_ID IN (SELECT ALLOCATION_ID FROM CLS_ALLOCATION_DTL@LAMS_PROD B WHERE ENTITY_TYPE='REC' AND
B.ALLOCATION_ID=A.ALLOCATION_ID AND ENTITY_ID IN (SELECT RECEIPT_NO FROM CLS_RECEIPT_DTL@LAMS_PROD C WHERE B.ENTITY_ID=C.RECEIPT_NO AND
RECEIPT_STATUS='A'))AND ALLOCATION_STATUS='A')*/
when i am trying to run this query i am getting an error'single row subquery returns more than one row'.
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