Question

errors in pl/sql function

Asked by: helen_t23

Hi,
Following is the procedure and I am having errors as shown below. Any help?
Thanks!
Prasanna
1 create or replace function createpriv
2 (v_username varchar2,priv1 varchar2)
3 return varchar2 as
4 username varchar2(200):=decrypt1(v_username);
5 priv varchar2(200):=decrypt1(priv1);
6 PRAGMA AUTONOMOUS_TRANSACTION;
7 begin
8 execute immediate 'grant'||priv||'to'||username;
9 return username ;
10 return priv;
11* end;
SQL> /

Function created.

SQL> select createpriv('148148148','127139138138129127144') from dual;
select createpriv('148148148','127139138138129127144') from dual
*
ERROR at line 1:
ORA-00900: invalid SQL statement
ORA-06512: at "PRASANNA.CREATEPRIV", line 8
ORA-06512: at line 1

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Asked On
2002-11-01 at 18:17:46ID20388547
Tags

priv

Topic

Oracle Database

Participating Experts
2
Points
20
Comments
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Answers

 

by: pennnnPosted on 2002-11-01 at 20:57:35ID: 7399323

Assuming that the decrypt1 function work as it's supposed to, the maybe the only problem is the lack of spaces in your sql statement. Try this on line 8:
execute immediate 'grant '||priv||' to '||username;
By the way your function can retun only one value and the first return statement will be the last statement executed in your function. If you need to return more than one value, then you should use OUT parameters.
Hope that helps!

 

by: robvcPosted on 2002-11-03 at 22:31:00ID: 7404512

I believe the problem here is with statement 8:
execute immediate 'grant'||priv||'to'||username;

PL/SQL does not permit the execution of a DML statement using dynamic parameters.  In other words, the interpreter has no way to determine the values off the variables until run time.  

You will need to use the dbms_sql package to run dynamic SQL.  Here is an example of how this would need to be done.

c1 := dbms_sql.open_cursor;
dbms_sql.parse(c1,'grant'||priv||'to'||username, 1);
rows_processed := dbms_sql.execute(c1);

Read through the Dynamic SQL documentation for other procedures you may need.

 

by: pennnnPosted on 2002-11-04 at 08:08:10ID: 7406253

robvc,
"execute immediate" IS dynamic SQL. The DBMS_SQL package was the only possible way to use dynamic SQL until Oracle 8i was released, but since then the "execute immediate" statement provides an easier and better way to execute dynamic SQL.
Furthermore, as a EE member since 1998, you should know better the guidelines for posting answers vs. comments. In case you've forgotten, here's the link:
http://www.experts-exchange.com/cmtyQuestAnswer.jsp

Hope that helps!

 

by: helen_t23Posted on 2002-11-04 at 16:35:11ID: 7408307

Hey,
I accept Mr.pennnn's answer and it worked. The only problem was the lack of spaces in my sql statement.So i give him 'A'. Sorry for any inconvenience!

regards
helen

20120131-EE-VQP-002

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