HSQLDB AS关键字被忽略

Question

我对谷歌搜索或搜索搜索没有任何好运，所以这里有。

我有以下SQL语句，我正在尝试针对HSQLDB 2.3.0运行。

select
tr.id as training_request_id,
s.id as student_id,
s.first_name as student_first_name,
s.last_name as student_last_name,
s.title as student_title,
c.id as customer_id,
c.name as customer_name,
trs.status
from training_request tr
left outer join student s on tr.student_id = s.id
left outer join customer c on tr.customer_id = c.id
left outer join training_request_status trs on tr.id = trs.training_request_id
where tr.slot_id is not null
order by tr.id, trs.date_entered DESC

当它回来时，colums是： ID，ID，FIRST_NAME，LAST_NAME，TITLE，ID，NAME，STATUS

为什么AS关键字没有任何影响？

更新：这是SQuirreL的截图。引用student_id列无效。

Answer 1

想出来。

有一个名为“get_column_name”的连接属性。将其设置为false。默认值为true。

http://hsqldb.org/doc/2.0/guide/dbproperties-chapt.html JDBC：HSQLDB：HSQL：//本地主机/入学; get_column_name =假