What is the ref cursor in Oracle?
What is the ref cursor in Oracle?
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.
What is the difference between ref CURSOR and Sys_refcursor?
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 . type sys_refcursor is ref cursor; SYS_REFCURSOR was introduced in Oracle 9i.
What is use of a cursor variable in Oracle?
What is use of a cursor variable in oracle? How it is defined? A cursor variable works like pointer in C. It is used to hold address of an item rather than the item itself. Cursor variables can be used to hold different values at run time. They can be used to pass query result sets between PL/SQL stored subprograms.
What is cursor variables or REF CURSOR?
A cursor variable is a variable of REF CURSOR data type which is a pointer to a data structure resource. It connects to query statement result, similar to the CURSOR data type.
What is an open cursor in Oracle?
Open cursor is for opening the cursor. Cursor is the one which you have declared with a sql query to it. Client connections are the ones like toad, sql*plus, plsql developer etc tool which connect to the oracle database server.
What is REF CURSOR in PL/SQL?
A REF CURSOR refers to a memory address on the database.
