Table of Contents
Can we use parameter in cursor?
Parameterized cursors are static cursors that can accept passed-in parameter values when they are opened. The following example includes a parameterized cursor. The cursor displays the name and salary of each employee in the EMP table whose salary is less than that specified by a passed-in parameter value.
How do you declare a parameterized cursor?
Unlike simple explicit cursor, parameterized cursors accept values as parameter. You specify the list of parameters separated by comma (,) while declaring the cursor and supply the corresponding argument for each parameter in the list while opening the cursor.
Can you pass a parameter to a cursor Mcq?
Parameters can be passed to a cursor variable.
Which keyword and parameter is used for declaring explicit cursor?
Before using an explicit cursor, you must declare and define it. You can either declare it first (with cursor_declaration) and then define it later in the same block, subprogram, or package (with cursor_definition) or declare and define it at the same time (with cursor_definition).
What are cursor attributes?
Each cursor has a set of attributes that enables an application program to test the state of the cursor. These attributes are %ISOPEN, %FOUND, %NOTFOUND, and %ROWCOUNT. %ISOPEN. This attribute is used to determine whether a cursor is in the open state.
How you can make a cursor variable or parameter point to a query work area?
You can make a cursor variable (or parameter) point to a query work area in two ways:
- OPEN the cursor variable FOR the query.
- Assign to the cursor variable the value of an already OPEN ed host cursor variable or PL/SQL cursor variable.
Can we use Isopen attribute with implicit cursor?
%ISOPEN Attribute: For Implicit Cursors, always the result is False. The reason is Oracle closes immediately after executing the DML result. Hence the result is FALSE.
What is the difference between cursor and record in PL SQL?
A record is similar to a table row, can hold one value for each column at a time. cursors are like “tables” they may hold multiple rows (records if you will). this is one way how you can declare a record: DECLARE TYPE myRecType IS RECORD ( [COLUMN NAME] [DATA TYPE], . .. );
Can we return cursor from function?
Answers. Yes, functions can return refcursors.
Which keyword is used to declare a cursor variable?
A cursor variable is like an explicit cursor that is not limited to one query. To create a cursor variable, either declare a variable of the predefined type SYS_REFCURSOR or define a REF CURSOR type and then declare a variable of that type. You cannot use a cursor variable in a cursor FOR LOOP statement.
How to execute PL SQL procedure with parameters?
Click the procedure name under Procedures node.
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
What is the cursor in PL/SQL?
What Is CURSOR In PL/SQL PL/SQL CURSOR. A cursor is a pointer to the private memory area allocated by the Oracle server. SQL Cursor Attributes for Implicit Cursors. Controlling Explicit Cursors Declaring the Cursor Opening the cursor Fetching data from the cursor Closing the Cursor Cursor FOR Loops Cursors with Parameters. The WHERE CURRENT OF Clause.
How to create cursor in SQL Server with example?
We have first declared three variables that will hold data from the cursor temporarily.