Table name to fetch data about vendors assigned to a class?

Question

Which table to be used, While creating a query (SQ01/02) to fetch details regarding vendors assigned to a particular class in R/3.?
The business requirement outline is,
Which all vendor are assigned to a particular class but no condition record maintained for them.
Thanking You,
Vivek

Answer 1

The simplest way would be to have two queries and UNION them together. For example:
WITH test_data AS
( SELECT 0 AS id, 'sam' AS customer_name, 'aus' AS country FROM DUAL UNION ALL
  SELECT 1 AS id, 'peter' AS customer_name, 'ind' AS country FROM DUAL UNION ALL
  SELECT 1 AS id, 'peter' AS customer_name, 'ind' AS country FROM DUAL UNION ALL
  SELECT 0 AS id, 'samy' AS customer_name, 'us' AS country FROM DUAL UNION ALL
  SELECT 0 AS id, 'rayan' AS customer_name, 'nz' AS country FROM DUAL
SELECT cnt
     , customer_name
     , country
FROM   ( SELECT id
              , customer_name
              , country
              , COUNT(*) OVER (PARTITION BY id) AS cnt
              , ROW_NUMBER() OVER (PARTITION BY id ORDER BY id) rn
         FROM   test_data
         WHERE  id != 0
WHERE  rn = 1    
UNION
SELECT id
     , customer_name
     , country
FROM   test_data
WHERE  id = 0
This gives the following results:
       CNT CUSTO COU
         0 rayan nz
         0 sam   aus
         0 samy  us
         2 peter ind