DB2排序和包含空值排序

DB2函数配合
select row_number() over(order by col desc nulls first/nulls last ) as rn,col from table1order by rn;
nulls first:把空值放到最前面,再对非空值排序
nulls last:把空值放到最后面在对非空值排序

你可能感兴趣的:(数据库)