如何不替换EntityManager.createNativeQuery（）中的命名参数？

Question

I am using JBOSS AS 7 and I have to use this command prior to querying:

entityManager.createNativeQuery(
    "ALTER SESSION SET NLS_DATE_FORMAT =\"YYYY-MM-DD HH24:MI:SS\"");

Now if I fire up this query the error message "Not all named parameters have been set: [MI:SS]" is shown. That makes sense, and I understand named parameters and everything. But just in this case I want this whole string not fiddled with.

I also tried to set the "parameter" "MI" to MI and "SS" to SS, but that did not help either.

How can I fire this query up without Hibernate trying to replace the named parameters? Or how can I set this information globally in the application server resp. in the persistence.xml or the standalone.xml from JBOSS?

Answer 1

Try with single quotes:

String sql = "alter session set nls_date_format='YYYY-MM-DD HH24:MI:SS'";
entityManager.createNativeQuery(sql);

Answer 2

您是否尝试过这样的转义：

"alter session set nls_date_format='YYYY-MM-DD HH24:MI:SS'"