Can we alter stored procedure?

Can we alter stored procedure?

Modifying or ALTERing a stored procedure is pretty simple. Once a stored procedure has been created it is stored within one of the system tables in the database that is was created in. The command to modify an existing stored procedure is ALTER PROCEDURE or ALTER PROC.

What happens when you run a stored procedure?

When you run a stored procedure, Adaptive Server prepares an execution plan so that the procedure’s execution is very fast. Call other procedures. Return a status value to a calling procedure or batch to indicate success or failure and the reason for failure. Return values of parameters to a calling procedure or batch.

In which cursor type the new insertions are not visible but updates are visible?

A static cursor does not display new rows inserted in the database after the cursor was opened, even if they match the search conditions of the cursor SELECT statement. If rows making up the result set are updated by other users, the new data values are not displayed in the static cursor.

Which command is used to execute a stored procedure?

EXEC command
The EXEC command is used to execute a stored procedure, or a SQL string passed to it. You can also use full command EXECUTE which is the same as EXEC.

How can I see the cursor in SQL?

Difference between View and Cursor in SQL :

1. Declare the cursor in declaration section.
2. Open the cursor in execution section.
3. Fetch the cursor to retrieve data into PL/SQL variable.
4. Close the cursor to release allocated memory.

How to write and use cursors in SQL Server stored procedure?

How to write and use Cursors in SQL Server Stored Procedure? Following is an example of simple Cursor in SQL Server Stored Procedure which prints all the records of Customers table. SET ANSI_NULLS ON.

When does the cursor change in a while loop?

Whenever a record is fetched the @@FETCH_STATUS has value 0 and as soon as all the records returned by the Select Query are fetched, its value changes to -1. A Cursor is associated with a WHILE LOOP which executes until the @@FETCH_STATUS has value 0.

What are the disadvantages of using a cursor in SQL?

The major disadvantage of a Cursor is its performance issue. A Cursor can be really slow when performing operations on large number of records and your SQL Query may take minutes to execute and produce results. Thus you must wisely choose and decide on the right scenario where you want to use a Cursor.

How to declare the cursor in SQL Server?

In your case for example, you were only moving forwards within the cursor, only reading data, not modifying it, and only accessing the cursor locally, therefore you would declare the cursor as follows: DECLARE gateway CURSOR LOCAL STATIC FAST_FORWARD FOR SELECT