What is the use of ref cursor?
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 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 cursor in PL SQL?
A cursor is a pointer to this context area. PL/SQL controls the context area through a cursor. A cursor holds the rows (one or more) returned by a SQL statement. The set of rows the cursor holds is referred to as the active set.
How do you create a cursor in SQL?
– Most Common SQL Server Cursor Syntax – SQL Server Cursor as a Variable – SQL Server Cursor as Output of a Stored Procedure – SQL Server Cursor Current Of Example – SQL Server Cursor Alternative with a WHILE Loop
How to call Oracle stored procedure which returns REF CURSOR?
Returning REF CURSORs from PL/SQL : Functions,Procedures and Implicit Statement Results
How to create cursor in SQL Server with example?
We have first declared three variables that will hold data from the cursor temporarily.
What is REF CURSOR in Oracle?
– First, declare an updatable cursor that updates credits of the customers whose credits are greater than zero. – Next, loop over the rows in the cursors. – Then, get the number of orders for each customer. – After that, assign the credit increment based on the order count. – Finally, update the credit of the customer.