order by 1,2这个是什么意思
select owner,table_name,tablespace_name,blocks,last_analyzed
from all_tables order by 1,2;
想问问这个是什么意思??
order by 1,2

[解决办法]
根据第一列和第二列排序
相当于
order by owner,table_name

[解决办法]
就是order by owner,table_name