What is ref cursor in Oracle stored procedure?

What is ref cursor in Oracle stored procedure?

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 I create a ref cursor in Oracle?

With a cursor variable, you simply pass the reference to that cursor. To declare a cursor variable, you use the REF CURSOR is the data type. PL/SQL has two forms of REF CURSOR typeS: strong typed and weak typed REF CURSOR . The following shows an example of a strong REF CURSOR .

Can ref cursor be used with procedure out parameter?

The Oracle Database adapter provides support for strongly-typed and weakly-typed (SYS_REFCURSOR) REF CURSORs that can be passed to PL/SQL procedures and functions as IN, OUT, or IN OUT parameters.

Can we pass cursor as parameter?

No, you can’t pass a static cursor as a parameter.

What is the difference between 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 display ref cursor in SQL Developer?

Using the PRINT command in a SQL Worksheet 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.

What is weak ref cursor in Oracle?

A weakly typed ref cursor has a return type that is dependant on the SQL statement it executes, i.e. only once the cursor is opened is the type known (at runtime).

What is the difference between cursor and ref cursor?

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. The cursor parameters cannot be referenced outside of the cursor query.

What is the advantage of ref cursor in Oracle?

A ref cursor is a variable, defined as a cursor type, which will point to, or reference a cursor result. The advantage that a ref cursor has over a plain cursor is that is can be passed as a variable to a procedure or a function. The ref cursor can be assigned to other ref cursor variables.

Can ref cursor be used for dynamic queries?

Answer: Here is an example script that performs dynamic SQL and returns the data as a ref cursor. …