How do I return a ref cursor in Oracle?
create or replace function test_cur return sys_refcursor as var_ref sys_refcursor; begin open var_ref for select item,status from item_master where rownum <10; return var_ref; end; declare l_var sys_refcursor; l_item varchar2(100); l_status varchar2(10); begin l_var:=test_cur; open l_var; loop fetch l_var into l_item.
What is cursor and ref cursor in Oracle?
A cursor is really any SQL statement that runs DML (select, insert, update, delete) on your database. A ref cursor is a pointer to a result set. This is normally used to open a query on the database server, then leave it up to the client to fetch the result it needs.
How do I pass a value from one cursor to another cursor in Oracle PL SQL?
It is possible to reference another cursor within the first one: declare cursor c1 is select distinct Assigned from table_name; cursor c2(p_Assigned in varchar2) is select id, Assigned from table_name where Assigned = p_Assigned; begin for r1 in c1 loop dbms_output.
How do I print data from ref cursor?
How can I fetch from a ref cursor that is returned from a stored procedure (OUT variable) and print the resulting rows to STDOUT in SQL*PLUS?…
- Create a test function to print its result.
- Execute the function.
- View the output.
- Verify the result set.
What is difference between PL SQL cursor and PL SQL ref cursor?
The ref cursor can be anything. Another difference is a ref cursor can be returned to a client. a plsql “cursor cursor” cannot be returned to a client. Another difference is a ref cursor can be passed from subroutine to subroutine — a cursor cannot be.
How do I print a reference cursor in Oracle PL SQL?
How do I see ref cursor results in SQL Developer?
Using the classic SQL*PLUS PRINT command to view the refcursor output will work in SQL Developer just like it would work in your command line tools. You execute your program, you create a local variable or 3 to ‘catch’ said output, and then you PRINT it.
Can we pass parameters to cursor in Oracle?
An explicit cursor may accept a list of parameters. Each time you open the cursor, you can pass different arguments to the cursor, which results in different result sets. In the cursor query, each parameter in the parameter list can be used anywhere which a constant is used.
Can we use cursor inside another cursor?
The trick to declaring a cursor within a cursor is that you need to continue to open and close the second cursor each time a new record is retrieved from the first cursor. That way, the second cursor will use the new variable values from the first cursor.
What is the difference between ref cursor and Sys Ref cursor in Oracle?
There is no difference between using a type declared as REF CURSOR and using SYS_REFCURSOR , because SYS_REFCURSOR is defined in the STANDARD package as a REF CURSOR in the same way that we declared the type ref_cursor .