How can use cursor in SQL Server stored procedure?

How can use cursor in SQL Server stored procedure?

To use cursors in SQL procedures, you need to do the following:

  1. Declare a cursor that defines a result set.
  2. Open the cursor to establish the result set.
  3. Fetch the data into local variables as needed from the cursor, one row at a time.
  4. Close the cursor when done.

Can we use cursor in stored procedure?

A cursor data type can also be output of a SQL Server stored procedure. The declaration of the cursor can be embedded into the body of a stored procedure. Then the cursor output from the stored procedure can be assigned just like any output of a stored procedure to the same data type.

How optimize cursor SQL Server?

Tips for using SQL Server 2016 cursors

  1. Reduce the number of rows to process in the cursor.
  2. Do not forget to close SQL Server 2016 cursor when its result set is not needed.
  3. Try to avoid using insensitive, static and keyset cursors, whenever possible.
  4. Use FAST_FORWARD cursors, whenever possible.

What is proper syntax for stored procedure?

The following are the basic syntax to create stored procedures in SQL Server:

  1. CREATE PROCEDURE [schema_name]. procedure_name.
  2. @parameter_name data_type,
  3. ….
  4. parameter_name data_type.
  5. AS.
  6. BEGIN.
  7. — SQL statements.
  8. — SELECT, INSERT, UPDATE, or DELETE statement.

What is difference between stored procedure and cursor?

A function or procedure is a set of instructions to perform some task. A cursor is an array that can stores the result set of a query. Show activity on this post. Stored procedures are pre-compiled objects and executes as bulk of statements, whereas cursors are used to execute row by row.

What is the alternative for cursor in SQL?

Alternative 2: Temporary Tables We can also use temporary tables instead of SQL cursors to iterate the result set one row at a time. Temporary tables have been in use for a long time and provide an excellent way to replace cursors for large data sets.

Why cursor is not recommended in SQL?

Cursors could be used in some applications for serialized operations as shown in example above, but generally they should be avoided because they bring a negative impact on performance, especially when operating on a large sets of data.

Which is better cursor or while loop?

Always confusing thing is which one is better; SQL While loop or cursor? While SQL While loop is quicker than a cursor, reason found that cursor is defined by DECLARE CURSOR. Every emphasis of the loop will be executed inside system memory and consuming required server assets.

What is a stored procedure in SQL with example?

A stored procedure is a prepared SQL code that you can save, so the code can be reused over and over again. So if you have an SQL query that you write over and over again, save it as a stored procedure, and then just call it to execute it.

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