db2 - SQL Query to concat duplicated row -


let's have table 3 columns following values

| | b | c | | a1| b1| c | | | b | c1| _____________

i'd make query 

a | b | c, c1| a1| b1| c|

to distinct first & second column. appreciated

need use listagg..

select   cola,    colb,   listagg(colc, ', ') within group(order colc) colc mytable group   cola,    colb

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