oracle 空值排序,排在最前面或者最后面

1，排在最前面用order by name nulls first;

eg：select t.name,t.code from table t where t.code!='1' order by name nulls first;

2，排在最后面order by name nulls last;

eg：select t.name,t.code from table t where t.code!='1' order by name nulls last;