WITH
--ship customer list
scl AS (
    SELECT DISTINCT 
        bill_cust
        ,ship_cust 
    FROM 
        rlarp.osm
    WHERE 
        oseas >= 2021 
        AND calc_status <> 'CANCELED' 
        AND version = 'ACTUALS' 
        AND ship_cust <> ''
        AND part <> ''
        AND gldc <> 'SAM'
        AND substring(glec,1,1) <= '2'
)
,rslt AS (
SELECT 
    scl.bill_cust
    ,bc.cclass bill_class
    ,CASE WHEN bc.dba = '' THEN bc.descr ELSE bc.dba END bill_descr
    ,bc.ctype bill_type
    ,bc.pricing bill_pricing
    ,scl.ship_cust
    ,bc.cclass ship_class
    ,CASE WHEN sc.dba = '' THEN sc.descr ELSE sc.dba END ship_descr
    ,sc.ctype ship_type
    ,sc.pricing ship_pricing
FROM 
    scl
    LEFT OUTER JOIN rlarp.cust bc ON
        bc.code = scl.bill_cust
    LEFT OUTER JOIN rlarp.cust sc ON
        sc.code = scl.ship_cust
)
SELECT *, CASE WHEN bill_cust = ship_cust THEN 'same' ELSE '' END flag FROM rslt --WHERE bill_cust <> ship_cust AND ship_pricing <> ''