最简单的解决方案:

SQL> select * from t69
  2  /

NAME       NICKNAME           ID
---------- ---------- ----------
Joe        Joey               14
Joe                           14
Michael                       15
           Mick               15
           Mickey             15

SQL> select max(name) as name
  2         , max(nickname) as nickname
  3         , id
  4  from t69
  5  group by id
  6  /

NAME       NICKNAME           ID
---------- ---------- ----------
Joe        Joey               14
Michael    Mickey             15

SQL>

如果您有 11gR2，您可以使用 新的-奇怪的 LISTAGG() 函数 但除此之外，将上述语句包装在连接 NAME 和 NICKNAME 列的 SELECT 中很简单.

If you have 11gR2 you could use the new-fangled LISTAGG() function but otherwise it is simple enough to wrap the above statement in a SELECT which concatenates the NAME and NICKNAME columns.