How do you write a procedure in DB2?

How do you write a procedure in DB2?

The CREATE PROCEDURE statement registers a stored procedure with a database server. You can register the following types of procedures with this statement, each of which is described separately. The procedure body is written exclusively in SQL statements, including SQL procedural language (SQL PL) statements.

Does DB2 support stored procedures?

Db2 provides some stored procedures, but you can also create your own. A stored procedure provides a common piece of code that is written only once and is maintained in a single instance that can be called from several different applications.

What is stored procedure in DB2 with example?

When an application that runs on a workstation calls a stored procedure on a Db2 server, the stored procedure updates a table based on the information that it receives from the application. Suppose that an application runs on a workstation client and calls a stored procedure A on the Db2 server at location LOCA.

What SQL language does DB2 use?

structured query language
The language that you use to access the data in Db2 tables is the structured query language (SQL). SQL is a standardized language for defining and manipulating data in a relational database.

How do I create a simple stored procedure in DB2?

A simple example about creating DB2 SQL stored procedure to return multiple Result Set

1. Step 1: Create a table: CREATE TABLE DEPT (DEPTNO CHAR(3) NOT NULL, DEPTNAME VARCHAR(36) NOT NULL, PRIMARY KEY(DEPTNO))
2. Step 2: Populate data into table:
3. Step 3: Create SQL store procedure:
4. Step 4: Call stored procedure in iNavigator:

Where are DB2 stored procedures stored?

DB2 LUW Server
Stored procedures are stored on a local or remote DB2 LUW Server. Local DB2 LUW Server applications or remote DRDA applications can use the SQL statement CALL to invoke a stored procedure.

How is stored procedure different from functions?

Basic Differences between Stored Procedure and Function in SQL Server. The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters.

What is difference between Oracle and DB2 database?

Db2 is well known for reliability and scalability, while Oracle Database is more known for its wide range of applications, tools, skills, and partners available. Both are very stable databases, with large amounts of documentation and good support.

Why we use stored procedure in SQL?

Stored procedues in SQL allows us to create SQL queries to be stored and executed on the server. Stored procedures can also be cached and reused. The main purpose of stored procedures to hide direct SQL queries from the code and improve performance of database operations such as select, update, and delete data.

What is the benefit of stored procedure in SQL?

By grouping SQL statements, a stored procedure allows them to be executed with a single call. This minimizes the use of slow networks, reduces network traffic, and improves round-trip response time. OLTP applications, in particular, benefit because result set processing eliminates network bottlenecks.

What is the use of a procedure package in DB2?

It contains the procedure body, including control statements. It might sometimes also include statements generated by Db2. Each time that the procedure is invoked, the package executes one or more times.

What is the difference between DB2 and native SQL procedures?

It might sometimes also include statements generated by Db2 .Each time that the procedure is invoked, the package executes one or more times. Native SQL procedures are more fully supported, easier to maintain, and typically perform better than external SQL procedures, which are deprecated. See CREATE PROCEDURE (SQL – external) (deprecated).

How many times does a DB2 SQL procedure execute?

It might sometimes also include statements generated by Db2. Each time that the procedure is invoked, the package executes one or more times. All SQL procedures that are created with a CREATE PROCEDURE statement that does not specify the FENCED or EXTERNAL options are native SQL procedures.

Can a stored procedure be written in SQL?

See CREATE PROCEDURE (SQL – native). The procedure body is an external program that is written in a programming language such as C, C++, COBOL, or Java and it can contain SQL statements. The source code for an external stored procedure is separate from the procedure definition and is bound into a package.