What is optional parameter in stored procedure?

What is optional parameter in stored procedure?

A parameter is considered optional if the parameter has a default value specified when it is declared. It is not necessary to provide a value for an optional parameter in a procedure call. The default value of a parameter is used when: No value for the parameter is specified in the procedure call.

How do you make a parameter optional in SQL?

To create optional parameter in stored procedure, we set the parameter value to NULL while creating a stored procedure.

What is stored procedure in as400?

A procedure (often called a stored procedure) is a program that can be called to perform operations. A procedure can include both host language statements and SQL statements. Procedures in SQL provide the same benefits as procedures in a host language.

What is stored procedure in Db2?

A stored procedure is a compiled program that can execute SQL statements and is stored at a local or remote Db2 server. You can invoke a stored procedure from an application program or from the command line processor. Db2 provides some stored procedures, but you can also create your own.

How do you do a SP parameter optional?

Solution 5 : Implementing Optional Parameters in T-SQL Stored Procedures

1. You have original stored procedure.
2. Add =null at your parameter declaration of the stored procedure.
3. Add IS NULL at your WHERE clause.
4. Now you have optional parameters in the stored procedure.

Can stored procedure have optional parameters?

If you are executing a stored procedure with a bunch of parameters it can be a bit of a pain if you have to pass a value in for each of them. Fortunately, it’s pretty easy to make some parameters required and others optional. You simply give them a default value.

How are stored procedures called?

A stored procedure is a group of one or more database statements housed in the database’s data dictionary and called from either a remote program, another stored procedure, or the command line. We commonly call them SPROCS, or SP’s.

What are the two types of stored procedure?

Different Types of stored procedure sql Server

• System Defined Stored Procedure. These stored procedures are already defined in SQL Server.
• Extended Procedure. Extended procedures provide an interface to external programs for various maintenance activities.
• User-Defined Stored Procedure.
• CLR Stored Procedure.

How will you run a stored procedure?

In Object Explorer, connect to an instance of the SQL Server Database Engine, expand that instance, and then expand Databases. Expand the database that you want, expand Programmability, and then expand Stored Procedures. Right-click the user-defined stored procedure that you want and select Execute Stored Procedure.

What is the purpose of set Nocount on?

When you use SET NOCOUNT ON, the message that indicates the number of rows that are affected by the T-SQL statement is not returned as part of the results. When you use SET NOCOUNT OFF; the count is returned. Using SET NOCOUNT ON can improve performance because network traffic can be reduced.

What are optional procedure parameters in SQL Server?

Optional procedure parameters are defined to have a default value. The SQL CALL statement calls a stored procedure. In addition to returning output parameters, a stored procedure can return a result set (that is, a result table associated with a cursor opened in the stored procedure) to the application that issues the CALL statement.

What are the advantages of using stored procedures in DB2?

Stored procedures can be used in both distributed and nondistributed DB2 applications. One of the advantages of using stored procedures is that for distributed applications, the processing of one CALL statement on the application requester, or client, can perform any amount of work on the application server.

What does DB2 mean?

DB2® stored procedure support provides a way for an SQL application to define and then call a procedure through SQL statements. Stored procedures can be used in both distributed and nondistributed DB2 applications.

How do I create a stored procedure in SQL Server?

To create an external procedure or an SQL procedure, you can use the SQL CREATE PROCEDURE statement. The following sections describe the SQL statements used to define and call the stored procedure, information about passing parameters to the stored procedure, and examples of stored procedure usage.