Join problem in query

Question

Dear All,
Below given given the table and its record.
I want the desired output like.
Code
SELECT
IPC.PER_NR,
(CHCM.OUTGOING_DATA, IPC.[STATUS]) AS 'STATUS',
IPC.SOC_MAPPING,
IPC.[STATUS],
CHCM.OUTGOING_DATA
FROM #INBOUND_PLM_CHCM IPC --Transaction Table
LEFT OUTER JOIN #CHCM_TO_PSOFT_MAPPING CHCM --Master Table used for mapping the data
ON IPC.[STATUS] = CHCM.INCOMING_DATA AND CHCM.PROCESS_TYPE = 'EZSUITE'
/* desired output
12345     T     PLM-5000     0     T
12346     A     PLM-5001     3     A
12347     4     PLM-5002     4     4
12348     T     PLM-5000     0 T
12349     NULL     PLM-5002     NULL     NULL
34512     T     PLM-5000     0     T
That means when if the join condition not satify then display IPC.[STATUS] else CHCM.OUTGOING_DATA AS 'STATUS'
--Trasction Table used for mapping the data
CREATE TABLE #INBOUND_PLM_CHCM (PER_NR INT, [STATUS] INT, SOC_MAPPING VARCHAR(10))
INSERT INTO #INBOUND_PLM_CHCM (PER_NR, [STATUS], SOC_MAPPING)
SELECT 12345, 0, 'PLM-5000' UNION ALL
SELECT 12346, 3, 'PLM-5001' UNION ALL
SELECT 12347, 4, 'PLM-5002' UNION ALL
SELECT 12348, 0, 'PLM-5000' UNION ALL
SELECT 12349, NULL, 'PLM-5002' UNION ALL
SELECT 34512, 0, 'PLM-5000'
SELECT * FROM #INBOUND_PLM_CHCM
--Master Table used for mapping the data
CREATE TABLE #CHCM_TO_PSOFT_MAPPING
(PROCESS_TYPE VARCHAR(10), INBOUND_PLM_CHCM_FIELD VARCHAR(10), INCOMING_DATA INT, OUTGOING_DATA CHAR(1))
INSERT INTO #CHCM_TO_PSOFT_MAPPING (PROCESS_TYPE, INBOUND_PLM_CHCM_FIELD, INCOMING_DATA, OUTGOING_DATA)
SELECT 'EZSUITE', 'STATUS', 0, 'T' UNION ALL
SELECT 'EZSUITE', 'STATUS', 3, 'A'
SELECT * FROM #CHCM_TO_PSOFT_MAPPING
Please suggest me how can i do it in my existing code.
Thanks and Regards,
Sumanta Panda
Edited by: user2367151 on Dec 10, 2009 12:17 PM
Edited by: user2367151 on Dec 10, 2009 12:21 PM

Answer 1

You are very close, miss only the NVL function:
SELECT IPC.PER_NR, nvl(CHCM.OUTGOING_DATA, IPC.STATUS) AS STATUS,
IPC.SOC_MAPPING, IPC.STATUS, CHCM.OUTGOING_DATA
FROM INBOUND_PLM_CHCM IPC
LEFT OUTER JOIN CHCM_TO_PSOFT_MAPPING CHCM
ON (IPC.STATUS = CHCM.INCOMING_DATA AND CHCM.PROCESS_TYPE = 'EZSUITE');
    PER_NR STATUS                                   SOC_MAPPIN     STATUS O
     34512 T                                        PLM-5000            0 T
     12348 T                                        PLM-5000            0 T
     12345 T                                        PLM-5000            0 T
     12346 A                                        PLM-5001            3 A
     12349                                          PLM-5002
     12347 4                                        PLM-5002            4Max