What is cursor in sql?

Cursor is a database object used by applications to manipulate data in a set on a row-by-row basis, instead of the typical SQL commands that operate on all the rows in the set at one time.
In order to work with a cursor we need to perform some steps in the following order:
. Declare cursor
. Open cursor
. Fetch row from the cursor
. Process fetched row
. Close cursor
. Deallocate cursor

Shashi Ray (More...)

Cursor plays there row quite nicely but although there are some disadvantage of Cursor .Because cursor doing roundtrip it will make network line busy and also make time consuming methods. First of all select query gernate output and after that cursor goes one by one so roundtrip happen.


Another disadvange of cursor are ther are too costly because they require lot of resources and temporary storage so network is quite busy. (More...)

A cursor is used to access the result set stored in the memory on execution of a query. It is a special programming construct that allows data to be manipulated on a row-by-row basis. They point to a certain location within a record set and allow the operator to move forward (and sometimes backward, depending upon the cursor type) through the results one record at a time (More...)

Cursor is a database object used by applications to manipulate data in a set on a row-by-row basis, instead of the typical SQL commands that operate on all the rows in the set at one time. For example, you can use cursor to include a list of all user databases and
make multiple operations against each database by passing each database name as a variable (More...)

Cursor is nothing but a temporary memory on database server,which stores result set temporary
Cursror memory allocated in tempdb
Cursor allows you to process the result row by row.

(More...)

The cursor can set to wait in JavaScript by using the property 'cursor' property. The following example illustrates the usage.

window.document.body.style.cursor = "wait"; // sets the cursor shape to hour-glass. (More...)

Cursor plays there row quite nicely but although there are some disadvantage of Cursor .
Because we know cursor doing roundtrip it will make network line busy and also make time consuming methods. First of all select query gernate output and after that cursor goes one by one so roundtrip happen.Another disadvange of cursor are ther are too costly because they require lot of resources and temporary storage so network is quite busy. (More...)

Cursor is a database object used by applications to manipulate data in a set on a row-by-row basis, instead of the typical SQL commands that operate on all the rows in the set at one time.
In order to work with a cursor we need to perform some steps in the following order:
. Declare cursor
. Open cursor
. Fetch row from the cursor
. Process fetched row
. Close cursor
. Deallocate cursor (More...)

? Declare cursor
? Open cursor
? Fetch row from the cursor
? Process fetched row
? Close cursor
? Deallocate cursor
(More...)

It is a object that manipulate data in a set row by row. (More...)