oracle与sqlserver关于列别名的一点区别

oracle：

SQL> select id "i d" from test;
 
       i d
----------
         1
 
SQL> select id [i d] from test;
 
select id [i d] from test
 
ORA-00923: 未找到请求的 FROM 症结字SQL> select id "i d" from test;
 
       i