SQL Server Cursors Interview Question:

What is cursor in MS SQL Server?

Submitted by: Administrator

A Cursor is a database object that represents a result set and is used to manipulate data row by row.
When a cursor is opened, it is positioned on a row and that row is available for processing.
SQL Server supports three types of cursor namely Transact-SQL server cursor, API server cursor, and client cursor.
Transact-SQL Server cursors use Transact-SQL statements and are declared using DECLARE CURSOR statement.
Transact-SQL Server cursors can be used in Transact-SQL scripts, stored procedures, and triggers.
Transact-SQL cursors are implemented on the server.
You can fetch only one row at a time in Transact-SQL Server cursors.
You can use FETCH statements with Transact-SQL cursors to retrieve rows from a cursor's result set.
API server cursors support the API cursor functions.
API server cursors are implemented on the server.
API server cursors support fetching blocks of rows with each fetch.
A cursor fetches multiple rows at a time is called a block cursor
Submitted by: Administrator