Contents
How do I print ref cursor results 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 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.
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.
Is 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 strong and weak ref cursor?
A strongly typed ref cursor always returns a known type, usually from a declared TYPE object. 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 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.
What is strong ref cursor?
A ref cursor which has fixed return type is called a Strong Ref Cursor in Oracle Database. Because of fixed return type, strong ref cursors can only be used selectively. For instance with those SELECT statements that return the result whose datatype matches with the one that you have fixed during cursor’s declaration.
What is 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.
What does REF CURSOR mean in Oracle Database?
The REF CURSOR is a data type in the Oracle PL/SQL language. It represents a cursor or a result set in Oracle Database. The OracleRefCursor object is a corresponding ODP.NET type for the REF CURSOR type.
Is the REF CURSOR backward scrollable in PL / SQL?
A REF CURSOR is not backward scrollable. The data represented by the REF CURSOR is accessed in a forward-only, serial manner. You cannot position a record pointer inside the REF CURSOR to point to random records in the result set. A REF CURSOR is a PL/SQL data type.
What kind of cursor variable does PL / SQL use?
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. This form of cursor variable called strong typed REF CURSOR because the cursor variable is always associated with a specific record structure, or type.
When to use executenonquery on a REF CURSOR?
When the ExecuteNonQuery method is invoked on a command that returns one or more REF CURSOR data types, each of the OracleCommand parameters that are bound as an OracleDbType.RefCursor gets a reference to an OracleRefCursor object.