SQl excecute plan

Question

SQL Statement
SELECT
  "VBELN" , "PARVW" , "KUNNR"
FROM
  "VBPA"
WHERE
  "MANDT" = '210' AND "VBELN" IN ( '400000','400019','400019','400066','400066','500000' ) AND (
  "PARVW" = 'AG' OR "PARVW" = 'RE' )
Execution Plan
SELECT STATEMENT ( Estimated Costs = 1 , Estimated #Rows = 8 )
        3 INLIST ITERATOR
            2 TABLE ACCESS BY INDEX ROWID VBPA
              ( Estim. Costs = 1 , Estim. #Rows = 8 )
                1 INDEX RANGE SCAN VBPA~Z01
                  ( Estim. Costs = 2 , Estim. #Rows = 8 )
                  Search Columns: 3
<b>Could you give me a explanation of this excecute plan aboved ?</b>

Answer 1

Hi guixin,
1. SELECT STATEMENT ( Estimated Costs = 1 , Estimated #Rows = 8 )
  It says that the command given to the
   database is a select statement.
  (other commands like insert, delete are also possible)
2.INLIST ITERATOR
  The database has to do some additional
  process based upon the SQL.
  The sql contains an IN statement.
VBELN" IN ( '400000','400019','400019','400066','400066','500000'
3. TABLE ACCESS BY INDEX ROWID VBPA
( Estim. Costs = 1 , Estim. #Rows = 8 )
The database has accessed the table
and used an index available on the table
instead of FULL SCAN on the table.
4. 1 INDEX RANGE SCAN VBPA~Z01
( Estim. Costs = 2 , Estim. #Rows = 8 )
Search Columns: 3
Based upon the index, the database
  scanned the table based upon rowid
and as required, searched for 3 columns.
regards,
amit m.