DB2 Stored Procedures

Code Example

## DB2 Stored Procedures

Stored procedures are programs stored and executed in DB2.

### Benefits
1. Reduced network traffic
2. Improved security
3. Code reusability
4. Transaction control
5. Better performance

### Procedure Structure
\`\`\`sql
CREATE PROCEDURE proc-name (parameters)
LANGUAGE SQL
BEGIN
    -- SQL statements
END
\`\`\`

### Parameter Modes
- **IN**: Input only
- **OUT**: Output only
- **INOUT**: Both input and output

### Procedure Languages
- SQL Procedure Language (SQL PL)
- External (COBOL, C, Java)

### Control Statements
- IF/THEN/ELSE
- CASE
- LOOP/WHILE/REPEAT
- LEAVE/ITERATE

### Calling Procedures
\`\`\`sql
CALL proc-name(parameters)
\`\`\`