在oracle的表里边,三个字段,abc,ab唯一,c可能对应多个ab,显示为多条...答:WITH tab AS (SELECT 'A' a, 'B' b, 'C1' c FROM dual UNION ALL SELECT 'A' a, 'B' b, 'C2' c FROM dual UNION ALL SELECT 'A' a, 'B' b, 'C3' c FROM dual) --SELECT a, b, listagg(c) within GROUP(ORDER BY a, b) F...