select (select value
from nls_database_parameters
where parameter = 'NLS_LANGUAGE') || '_' ||
(select value
from nls_database_parameters
where parameter = 'NLS_TERRITORY') || '.' ||
(select value
from nls_database_parameters
where parameter = 'NLS_CHARACTERSET')
from dual
来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/22816976/viewspace-1135479/
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