Examples of NODENAME with DB2 Multisystem

Here gives an example about how to use the NODENAME function.

Find the node name and the partition number for every row of the EMPLOYEE table, and the corresponding value of the EMPNO columns for each row.
SQL statement:
```
SELECT NODENAME(CORPDATA.EMPLOYEE), PARTITION(CORPDATA.EMPLOYEE), EMPNO
   FROM CORPDATA.EMPLOYEE
```

Find the node name for every record of the EMPLOYEE table.

OPNQRYF command:

OPNQRYF FILE((CORPDATA/EMPLOYEE))
        FORMAT(FNAME)
        MAPFLD((NODENAME '%NODENAME(1)'))

Join the EMPLOYEE and DEPARTMENT tables, select the employee number (EMPNO) and determine the node from which each row involved in the join originated.

SQL statement:

SELECT EMPNO, NODENAME(X), NODENAME(Y)
   FROM CORPDATA.EMPLOYEE X, CORPDATA.DEPARTMENT Y
   WHERE X.DEPTNO=Y.DEPTNO

OPNQRYF command:

OPNQRYF FILE((CORPDATA/EMPLOYEE) (CORPDATA/DEPARTMENT))
        FORMAT(FNAME)
        JFLD((EMPLOYEE/DEPTNO DEPARTMENT/DEPTNO *EQ))
        MAPFLD((EMPNO 'EMPLOYEE/EMPNO')
               (NODENAME1 '%NODENAME(1)')
               (NODENAME2 '%NODENAME(2)'))

Join the EMPLOYEE and DEPARTMENT tables, select all rows of the result where the rows of the two tables are on the same node.

SQL statement:

SELECT *
   FROM CORPDATA.EMPLOYEE X, CORPDATA.DEPARTMENT Y
   WHERE NODENAME(X)=NODENAME(Y)

OPNQRYF command:

OPNQRYF FILE((CORPDATA/EMPLOYEE) (CORPDATA/DEPARTMENT))
        FORMAT(FNAME)
        JFLD((1/NODENAME1 2/NODENAME2 *EQ))
        MAPFLD((NODENAME1 '%NODENAME(1)')
               (NODENAME2 '%NODENAME(2)'))

Examples of NODENAME with DB2® Multisystem

Examples of NODENAME with DB2^® Multisystem