Advantage Of Cursor In Sql Server

Hi Ajay,

Cursors allow row-by-row prcessing of the resultsets.

Types of cursors: Static, Dynamic, Forward-only, Keyset-driven. See books online for more information.

Advantages of cursors:-Row by Row operations can be successfully executed

Disadvantages of cursors: Each time you fetch a row from the cursor, it results in a network roundtrip, where as a normal SELECT query makes only one rowundtrip, however large the resultset is. Cursors are also costly because they require more resources and temporary storage (results in more IO operations). Furthere, there are restrictions on the SELECT statements that can be used with some types of cursors.

Most of the times, set based operations can be used instead of cursors.

Please refer the below link for the example of Types of cursors

http://www.dotnet-tricks.com/Tutorial/sqlserver?id=RLID060512&title=SQL%20Server%20-%20Types%20of%20Cursors

Thanks

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Satyapriya Nayak14y ago
Hi Ajay,

Cursors allow row-by-row prcessing of the resultsets.

Types of cursors: Static, Dynamic, Forward-only, Keyset-driven. See books online for more information.

Advantages of cursors:-Row by Row operations can be successfully executed

Disadvantages of cursors: Each time you fetch a row from the cursor, it results in a network roundtrip, where as a normal SELECT query makes only one rowundtrip, however large the resultset is. Cursors are also costly because they require more resources and temporary storage (results in more IO operations). Furthere, there are restrictions on the SELECT statements that can be used with some types of cursors.

Most of the times, set based operations can be used instead of cursors.

Please refer the below link for the example of Types of cursors

http://www.dotnet-tricks.com/Tutorial/sqlserver?id=RLID060512&title=SQL%20Server%20-%20Types%20of%20Cursors

Thanks
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