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
Trouble verifying database password
Thankyou to everyone who responded to my last post (I can't find the posting, it has been buried). <
Greek characters in php
Hi,
I'm making a script and I m using for first time greek characters.
I started to write
Formatting echo from database
So I have a database that stores First and last names, then echos them back to a website, as of now
Replacing a string on click of a button
Hi! Is there a way to replace a string on a click of a text link?
This is what I've come up w
Unable to display contents in Second Drop Down Box
Hi All,
What I am trying to do is 2 dependent drop down boxes and when user selects su
Help to integrate whois Domain Details to website
Hi,
can i know is their any php script r methods to add domain details to my website.
Binding 2 UDP sockets on same port, connected to different destinations, 1 receives
Hello,
My application wants to send/recv data to 2 different UDP ports on a remote computer, us
mail() problem
Hi Guys,
I've set up a contact email form. It sends the information fine, but it sends it to
Please help - should be a simple fix.. driving me nuts
Everything seemed to be working fine. I have a table, it alphabetically lists a bunch of cities and
mod_rewrite.c on windows ??
why it's not working on windows while it's working on other hosts???
this is the code i got