Variable uses and placement
Posted on
16th Feb 2014 07:03 pm by
admin
I'm new to PL/SQL and am trying to learn about variable valid uses/placement (any pointers to any docs is appreciated...)
All of the docs I've looked only mention declaration and assignment not valid placement.
When I use an input parameter to a cursor placement matters . I just don't understand why...
example... using the value "SCOTT" as an input parm to the c10 cursor replaces the "str_in" variable correctly and works...
1 declare
2 cursor c10(str_in IN varchar2) is
3 select username
4 from dba_users where username=str_in ;
5 begin
6 for r_c10 in c10('SCOTT') loop
7 dbms_output.put_line(r_c10.username);
8 end loop;
9* end;
SQL> /
SCOTT
PL/SQL procedure successfully completed.
However, when trying to replace another "word" it won't resolve the reference...
example... attempting to replace the from table_name as an input parm, no go...
1 declare
2 cursor c10(str_in IN varchar2) is
3 select username
4 from str_in where username='SCOTT' ;
5 begin
6 for r_c10 in c10('DBA_USERS') loop
7 dbms_output.put_line(r_c10.username);
8 end loop;
9* end;
SQL> /
from str_in where username='SCOTT' ;
*
ERROR at line 4:
ORA-06550: line 4, column 6:
PL/SQL: ORA-00942: table or view does not exist
ORA-06550: line 3, column 1:
PL/SQL: SQL Statement ignored
ORA-06550: line 7, column 26:
PLS-00364: loop index variable 'R_C10' use is invalid
ORA-06550: line 7, column 5:
PL/SQL: Statement ignored
Why can't it resolve the string ?
Any help is appreciated
dumb newbie...
No comments posted yet
Your Answer:
Login to answer
344
49
Other forums
problem in program for counting no of chars using pointers
Hi all, I was trying to make a program which counts number of chars in a string using concpt of poin
Registration
ok so i have a site where people can register and login which works now thanks to someone on here th
Kill a process
I have a question - how can I kill a process from a command line or by using Oracle SQL Developer? I
PHP5 - Verifying a secure mail is secure
I need to send an e-mail from a form to a external department and because it contains personal custo
HELP with mysql_real_escape_string
I'm looking to remove apostrophes completely when someone enters lyrics but don't have a clue how to
Facebook status update API
Hello,
So, I'm trying to create my first Facebook application with PHP.
Basic ideas fo
SCO Unix
I know this might not be the place to ask, but, can anyone tell me if SCO Unix comes with PHP built
how to remove in php string display
My code is
$message="We're looking at developing our website.";
$body= "
Progress bar tracking file downloads
Hey guys, was wondering if there was a way to track how far a file has been downloaded. I know there
Is there a quick way to do this?
Hi all,
I need to create a mysql table from php that goes a little something like this