Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

count records in cursor  + PL/SQL

Posted on 2007-12-04
4
Medium Priority
?
7,024 Views
Last Modified: 2013-12-07
Hi, I have a question about cursor.
I have a cursor, How can I know is there any record in it instead of Fetch the records?
like:
Open curCht for strSQL;
How do I know there are records in this cursor?

Thanks
0
Comment
Question by:chenjhua
  • 2
4 Comments
 
LVL 14

Expert Comment

by:ajexpert
ID: 20405515
Hi,
I dont think there is any way you can get the count just after opening the cursor.

You can use BULK_COLLECT feature of cursor which will should give the desired resutls you are looking for.

Thanks,
ajexpert
0
 

Author Comment

by:chenjhua
ID: 20405633
ajexpert:
thanks for the answer. Can you give mw detail about it?
basically, I will execute a sql to get a cursor, and I will return this cursor to the Front end, before I return it, I need know is there any record in that cursor.

Thanks
0
 
LVL 14

Expert Comment

by:ajexpert
ID: 20405701
OK...what I understand is that you need to do some processing if there are records in cursor else you dont have to do any processing.

Also do you wish to return the cursor to the front end? If yes, I believe there is no issue if there are no records in it.
This condition (i.e no records in cursor) can be handled very well in backend as well as in front end.
Do let me know how do you wish to incorporate.

Thanks
0
 
LVL 13

Accepted Solution

by:
anand_2000v earned 500 total points
ID: 20405862
A good example was given in another question asked just a few hours back
create or replace
PROCEDURE COUNTER AS
 
TYPE v_array is varray(100000) of NUMBER(38,8); 
temp_array V_ARRAY;
 
CURSOR nwr is SELECT x_coord from GRID_FLORIDA g,f_region r where r.region_id = 'R108' and sdo_relate(g.geom, r.geom,'mask=ANYINTERACT querytype=WINDOW') = 'TRUE';
 
begin 
open nwr;
  fetch nwr bulk collect into temp_array;
  Dbms_output.PUT_LINE(temp_array.count);
close nwr;
END COUNTER;

Open in new window

0

Featured Post

Vote for the Most Valuable Expert

It’s time to recognize experts that go above and beyond with helpful solutions and engagement on site. Choose from the top experts in the Hall of Fame or on the right rail of your favorite topic page. Look for the blue “Nominate” button on their profile to vote.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Working with Network Access Control Lists in Oracle 11g (part 1) Part 2: http://www.e-e.com/A_9074.html So, you upgraded to a shiny new 11g database and all of a sudden every program that used UTL_MAIL, UTL_SMTP, UTL_TCP, UTL_HTTP or any oth…
When it comes to protecting Oracle Database servers and systems, there are a ton of myths out there. Here are the most common.
This video shows syntax for various backup options while discussing how the different basic backup types work.  It explains how to take full backups, incremental level 0 backups, incremental level 1 backups in both differential and cumulative mode a…
This video shows how to copy an entire tablespace from one database to another database using Transportable Tablespace functionality.

876 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question