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.

Can ref cursor be used with procedure of 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.

What is Rowtype?

The %ROWTYPE attribute provides a record type that represents a row in a database table. The record can store an entire row of data selected from the table or fetched from a cursor or cursor variable. Variables declared using %ROWTYPE are treated like those declared using a datatype name.

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.

Can ref cursor can be used for dynamic queries?

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

What is the difference between type and Rowtype in Oracle?

%TYPE : Used to declare a field with the same type as that of a specified table’s column. %ROWTYPE: Used to declare a record with the same types as found in the specified table, view or cursor (= multiple columns).

What is Rowtype attribute used for?

What is REF CURSOR in Oracle with example?

The REF CURSOR is a data type in the Oracle. REF CURSOR also referred as Cursor Variables.Cursor variables are like pointers to result sets. Cursor can be attached to only one query while REF CURSOR can be used to associate multiple queries at run time. Example :-. Declare.

What is cursor%rowtype in SQL?

The %ROWTYPE attribute is prefixed by a cursor name or a cursor variable name. The syntax is record cursor%ROWTYPE , where record is an identifier that is assigned to the record, and cursor is an explicitly declared cursor within the current scope.

How do you use rowtype in PL SQL?

Using %ROWTYPE with cursors (PL/SQL) The %ROWTYPE attribute is used to define a record with fields corresponding to all of the columns that are fetched from a cursor or cursor variable. Each field assumes the data type of its corresponding column. The %ROWTYPE attribute is prefixed by a cursor name or a cursor variable name.

What is the difference between SYS_REFCURSOR and rowtype?

The whole point of sys_refcursor is that it’s dynamically defined. The rowtype declaration, on the other hand has to be static (if it’s not, the compiler can’t tell if the fields referenced from it are valid). This is the definition of a use case where you should be defining your own strongly typed ref cursor, instead of using sys_refcursor.