Heroku上的Postgres 9.3.2。

可以肯定的是我只是个白痴，但是我似乎无法弄清楚为什么我的语法错误。

db=> \dt
              List of relations
 Schema |    Name    | Type  |     Owner      
--------+------------+-------+----------------
 public | device     | table | admin
 public | post       | table | admin
 public | user       | table | admin
(3 rows)

// why does this fail?
db=> drop table user; 
ERROR:  syntax error at or near "user"
LINE 1: drop table user;

// does the right thing
db=> drop table error; 
ERROR:  table "error" does not exist