What is ref cursor example?

A REF CURSOR is a PL/SQL data type whose value is the memory address of a query work area on the database. In essence, a REF CURSOR is a pointer or a handle to a result set on the database. REF CURSOR s are represented through the OracleRefCursor ODP.NET class.

How do you call a procedure with Ref cursor out parameter?

6 Answers. create or replace procedure my_proc( p_rc OUT SYS_REFCURSOR ) as begin open p_rc for select 1 col1 from dual; end; / variable rc refcursor; exec my_proc( :rc ); print rc; will work in SQL*Plus or SQL Developer.

How do you see the output of a ref cursor?

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.

How are ref cursors passed to a function?

Each time, a new result set is created from that query and made available via the cursor variable. REF CURSOR types may be passed as parameters to or from stored procedures and functions. The return type of a function may also be a REF CURSOR type.

How to use SYS _ REFCURSOR as a parameter?

have to create procedure like procedure (username in varchar,s_cursor out sys_refcursor); procedure has to accept username and returns row ( where username=in parameter )as cursor. Rule:Cursor must and should be having unique sequence no along with the record it gives. example: (unique no (sequence),username ,password,age,gender)

How to use a REF CURSOR in EMP?

The example below uses a ref cursor to return a subset of the records in the EMP table. The following procedure opens a query using a SYS_REFCURSOR output parameter. Notice the cursor is not closed in the procedure.

How are ref cursors used in Oracle 12c?

Dynamic SQL Enhancements in Oracle 11g; Implicit Statement Results in Oracle Database 12c Release 1 (12.1) Using Ref Cursors. The example below uses a ref cursor to return a subset of the records in the EMP table. The following procedure opens a query using a SYS_REFCURSOR output parameter. Notice the cursor is not closed in the procedure.