Concatenate o/p of two select statements - response (14) by Jessy Mahesh Kothapalli

 
RECURSIVE function logic
 
createmultisetvolatiletable tb1
(id integer
,nm varchar(5)
)  
primaryindex (id,nm) 
oncommitpreserve rows;
 
 
insertinto tb1 values (10,'xy');
insertinto tb1 values (10,'yz');
insertinto tb1 values (10,'zx');
insertinto tb1 values (20,'ab');
insertinto tb1 values (20,'bc');
 
 
createmultisetvolatiletable tb3
as
(
sel id,nm,rank () over (partitionby id orderby nm) rn1
from
tb1
) withdataprimaryindex (id,nm) oncommitpreserve rows;
 
 
withrecursive rslt (id,nm,rn1,lvl)
as(
sel id,cast ( nm  as varchar(20)),rn1,0 as lvl
from
tb3
where
rn1 = 1
unionall
sel
rslt.id,
rslt.nm || ',' ||b.nm,
b.rn1,
rslt.lvl +1 as lvl
from
tb3  b
innerjoin
rslt
on
rslt.id = b.id
where
rslt.rn1 < b.rn1
)
 
 
 sel id,nm
 from rslt
 qualify rank() over (partitionby id  orderby lvl desc ) = 1;
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Above logic used for only single grouping colum.
If we use multiple grouping statements for same, it will NOT be concatenated , Please see which we’ve written logic for multiple grouping
-----------------------Logic which we've written---------------------------------
CREATEMULTISET  TABLE OLAP_DEV.TB1
(
 DEALER_WID   DECIMAL(10,0)
, DIVN_WID  DECIMAL(10,0)
, EVTLOC_WID  DECIMAL(10,0)
, MONTH_WID   DECIMAL(10,0)
, MM_WID  DECIMAL(10,0)
,EVENT_NAME   VARCHAR(2000)
)
 
 
 
INSERTINTO TB1
SELECT * FROM WC_EVENT_MM_A_TEST;
 
SELECT * FROM TB3
CREATEMULTISETTABLE TB3
AS
(
SEL DEALER_WID,DIVN_WID, EVTLOC_WID,MONTH_WID,MM_WID, EVENT_NAME,   RANK () OVER (PARTITIONBY DEALER_WID,DIVN_WID, EVTLOC_WID,MONTH_WID,MM_WID ORDERBY EVENT_NAME) RN1
FROM
TB1
)
WITHDATA;
 
 
 
WITHRECURSIVE RSLT (DEALER_WID,DIVN_WID, EVTLOC_WID,MONTH_WID,MM_WID, EVENT_NAME,RN1,LVL)
AS(
SEL DEALER_WID,DIVN_WID, EVTLOC_WID,MONTH_WID,MM_WID,CAST ( EVENT_NAME  AS VARCHAR(1000)),RN1,0 AS LVL
FROM
TB3
WHERE
RN1 = 1
UNIONALL
SEL
--RSLT.ID,
RSLT.DEALER_WID,
RSLT.DIVN_WID,
RSLT.EVTLOC_WID,
RSLT.MONTH_WID,
RSLT.MM_WID,
TRIM(RSLT.EVENT_NAME) || ',' ||TRIM(B.EVENT_NAME),
B.RN1,
RSLT.LVL +1 AS LVL
FROM
TB3  B
INNERJOIN
RSLT
ON
--RSLT.ID = B.ID
RSLT.DEALER_WID=B.DEALER_WID
AND RSLT.DIVN_WID=B.DIVN_WID
AND RSLT.EVTLOC_WID=B.EVTLOC_WID
AND RSLT.MONTH_WID=B.MONTH_WID
AND RSLT.MM_WID=B.MM_WID
WHERE
RSLT.RN1 < B.RN1
)
 
 
 SEL DEALER_WID,DIVN_WID, EVTLOC_WID,MONTH_WID,MM_WID, EVENT_NAME
 FROM RSLT
 QUALIFY RANK() OVER (PARTITIONBY DEALER_WID,DIVN_WID, EVTLOC_WID,MONTH_WID,MM_WID  ORDERBY LVL DESC ) = 1;
 
this logic is not working when we are using multiple grouping values.
Please help me out from this situation!
 
Thanks in advance
 
 
Eagerly awaiting