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Developer-C 11.1
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4.0
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CREATE TABLE data AS SELECT 1 ID, 'a' Name1, 'b' Name2, 'c' Name3 FROM DUAL UNION ALL SELECT 1 ID, 'c' Name1, 'd' Name2, 'a' Name3 FROM DUAL UNION ALL SELECT 2 ID, 'd' Name1, 'e' Name2, 'a' Name3 FROM DUAL UNION ALL SELECT 2 ID, 'c' Name1, 'd' Name2, 'b' Name3 FROM DUAL;
4 rows affected
SELECT ID, LISTAGG(NAME_LIST, ',') FROM (SELECT ID, NAME1 NAME_LIST FROM DATA UNION SELECT ID, NAME2 FROM DATA UNION SELECT ID, NAME3 FROM DATA ) GROUP BY ID;
ID
LISTAGG(NAME_LIST,',')
1
a,c,b,d
2
d,c,e,a,b