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What are the different types of cursor in SQL Server?

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What are the different types of cursor in SQL Server?

SQL Server supports three cursor implementations.

  • Transact-SQL cursors. Transact-SQL cursors are based on the DECLARE CURSOR syntax and used mainly in Transact-SQL scripts, stored procedures, and triggers.
  • Application programming interface (API) server cursors.
  • Client cursors.
  • Forward-only.
  • Static.
  • Keyset.
  • Dynamic.

How many type of cursor is present in SQL?

four types
Explanation: SQL Server supports four types of cursor. Explanation: Cursor alternatives are WHILE loop, subqueries, Temporary tables and Table variables. 5.

What are the different types of mouse pointer?

12 Types Of Mouse Pointers (Differences, Appearance)

  • Text Pointer. A text pointer, which resembles a capital “I” in certain fonts, is one of the most common pointers you will see when working on a computer.
  • Busy Pointer.
  • Link Pointer.
  • Precision Pointer.
  • Standard Pointer.
  • Help Pointer.
  • Background Busy Pointer.
  • Diagonal Resize.

What is cursor datatype?

There are two main types of cursor data types: weakly-typed cursor data types and strongly-typed cursor data types. The property of being strongly or weakly typed is defined when the data type is created. Cursor data type result set definitions can be defined by providing a row type definition.

When cursor is used in SQL?

Use of Cursor The major function of a cursor is to retrieve data, one row at a time, from a result set, unlike the SQL commands which operate on all the rows in the result set at one time. Cursors are used when the user needs to update records in a singleton fashion or in a row by row manner, in a database table.

What is SQL cursor example?

A SQL Server cursor is a set of T-SQL logic to loop over a predetermined number of rows one at a time. The purpose for the cursor may be to update one row at a time or perform an administrative process such as SQL Server database backups in a sequential manner.

What is implicit cursor in SQL?

An implicit cursor has attributes that return information about the most recently run SELECT or DML statement that is not associated with a named cursor. Note: You can use cursor attributes only in procedural statements, not in SQL statements.

What are the 3 types of mouse?

What Are the Different Types of Computer Mouse Models?

  • Wired Mouse. A wired mouse connects directly to your desktop or laptop, usually through a USB port, and transmits information via the cord.
  • Bluetooth Mouse.
  • Trackball Mouse.
  • Optical Mouse.
  • Laser Mouse.
  • Magic Mouse.
  • USB Mouse.
  • Vertical Mouse.

What is the hand cursor called?

It is also called a pointer, but today pointer refer to a specific cursor, the one that looks like a hand with an extended index finger.

Where is cursor used in SQL Server?

Cursor is a database object to retrieve data from a result set one row at a time, instead of the T-SQL commands that operate on all the rows in the result set at one time. We use a cursor when we need to update records in a database table in singleton fashion means row by row.

What is cursor in DBMS and its types?

A cursor is a temporary work area created in the system memory when a SQL statement is executed. A cursor contains information on a select statement and the rows of data accessed by it. There are two types of cursors in PL/SQL : Implicit cursors. Explicit cursors.

What is a cursor in MySQL?

In MySQL, a cursor allows row-by-row processing of the result sets. A cursor is used for the result set and returned from a query. By using a cursor, you can iterate, or step through the results of a query and perform certain operations on each row.

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