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. …
What is strong ref cursor in Oracle?
A ref cursor which has fixed return type is called a Strong Ref Cursor in Oracle Database. 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 and its types?
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.
What is the use of ref cursor?
Using REF CURSOR s is one of the most powerful, flexible, and scalable ways to return query results from an Oracle Database to a client application. A REF CURSOR is a PL/SQL data type whose value is the memory address of a query work area on the database.
Is it possible to have a PL / SQL procedure that uses a REF CURSOR?
Question: Is it possible to have a PL/SQL procedure that has dynamic SQL and uses a ref cursor? Can you show an example of a ref cursor with dynamic SQL? Answer: Here is an example script that performs dynamic SQL and returns the data as a ref cursor. The best on site ” Oracle training classes ” are just a phone call away!
Can a REF CURSOR be used as a parameter?
A user defined Ref-Cursor can be used as a parameter for the subprograms only if it is declared in a package specification as shown below. The below package specification declares a strong Ref-Cursor returning the record type of the EMPLOYEES table’s structure.
How to bind cursor variable in dynamic SQL?
Use an OPEN FOR statement to associate a cursor variable with the dynamic SQL statement. In the USING clause of the OPEN FOR statement, specify a bind variable for each placeholder in the dynamic SQL statement. The USING clause cannot contain the literal NULL.
When do I get an invalid cursor in SQL?
When we try to fetch from the variable L_RC_VAR1, which was initially opened, we face the ORA-01001: invalid cursor error.