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CREATE TABLE table_name ( "USER", JOB ) AS SELECT 1, 'A' FROM DUAL UNION ALL SELECT 1, 'B' FROM DUAL UNION ALL SELECT 1, 'C' FROM DUAL UNION ALL SELECT 1, 'D' FROM DUAL UNION ALL SELECT 1, 'E' FROM DUAL UNION ALL SELECT 2, 'B' FROM DUAL UNION ALL SELECT 2, 'C' FROM DUAL UNION ALL SELECT 2, 'F' FROM DUAL UNION ALL SELECT 2, 'G' FROM DUAL UNION ALL SELECT 3, 'A' FROM DUAL UNION ALL SELECT 3, 'B' FROM DUAL UNION ALL SELECT 3, 'C' FROM DUAL UNION ALL SELECT 3, 'D' FROM DUAL UNION ALL SELECT 4, 'I' FROM DUAL UNION ALL SELECT 4, 'J' FROM DUAL UNION ALL SELECT 4, 'K' FROM DUAL UNION ALL SELECT 4, 'L' FROM DUAL;
17 rows affected
WITH groups ( grp, "USER", job ) AS ( SELECT MIN(CONNECT_BY_ROOT("USER")) AS grp, "USER", JOB FROM table_name CONNECT BY NOCYCLE PRIOR "USER" = "USER" OR PRIOR JOB = JOB GROUP BY "USER", JOB ) SELECT users, jobs FROM ( SELECT grp, LISTAGG("USER", ',') WITHIN GROUP (ORDER BY "USER") AS users FROM ( SELECT DISTINCT grp, "USER" FROM groups ) GROUP BY grp ) u INNER JOIN ( SELECT grp, LISTAGG(JOB, ',') WITHIN GROUP (ORDER BY JOB) AS jobs FROM ( SELECT DISTINCT grp, job FROM groups ) GROUP BY grp ) j ON ( u.grp = j.grp );
USERS
JOBS
1,2,3
A,B,C,D,E,F,G
4
I,J,K,L