How do you loop through a cursor in SQL Server?

How do you loop through a cursor in SQL Server?

Declare two variables – one is ProductID which is integer type and the other is Grade which is nvarchar type. Declare Cursor which is named as ProductCursor, and select ProductID from tble_DailySales’s table into ProductCursor. Next, row Fetch from ProductCursor. Check FETCH_STATUS when FETCH_STATUS is 0 when it works.

Which SQL command is used to iterate through each row in a cursor?

For more information on cursors, also take a look at the free SQL query training provided by Steve Stedman. In SQL Server the cursor is a tool that is used to iterate over a result set, or to loop through each row of a result set one row at a time.

Can we use for loop in SQL query?

Simple answer is NO !! . There is no FOR in SQL, But you can use WHILE or GOTO to achieve the way how the FOR will work. I always prefer WHILE over GOTO statement. For loop is not officially supported yet by SQL server.

How do I run a cursor in SQL?

To work with cursors you must use the following SQL statements: DECLARE CURSOR. OPEN. FETCH….Cursors in SQL procedures

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.

What can a cursor FOR LOOP use?

The cursor FOR LOOP statement implicitly declares its loop index as a record variable of the row type that a specified cursor returns, and then opens a cursor. With each iteration, the cursor FOR LOOP statement fetches a row from the result set into the record.

How do you create a cursor in SQL?

Follow these steps to create a cursor: Associate a cursor with a resultSet of a T-SQL statement, and define the characteristics of the cursor, such as how the rows are going to be retrieved, and so forth. Execute the T-SQL statement to populate the cursor. Retrieve the rows in the cursor.

What is the use of cursor in SQL Server?

Cursors In SQL Server. A SQL cursor is a database object that retrieves data from result sets one row at a time.The cursor in SQL can be used when the data needs to be updated row by row.

What is loop in SQL?

LOOP statement in SQL procedures. The LOOP statement is a special type of looping statement, because it has no terminating condition clause. It defines a series of statements that are executed repeatedly until another piece of logic, generally a transfer of control statement, forces the flow of control to jump to some point outside…

What is cursor in SQL?

Cursors in SQL. A cursor is a temporary work area created in system memory when a SQL statement is executed. A cursor is a set of rows together with a pointer that identifies a current row. It is a database object to retrieve data from a result set one row at a time.