确定 Oracle 日期是否在周末?

Is this the best way to determine if an Oracle date is on a weekend?

select * from mytable
where 
TO_CHAR (my_date, 'DY', 'NLS_DATE_LANGUAGE=ENGLISH') IN ('SAT', 'SUN');

推荐答案

从 Oracle 11g 开始，是的.我见过的唯一可行的区域不可知替代方案如下:

SELECT *
FROM mytable
WHERE MOD(TO_CHAR(my_date, 'J'), 7) + 1 IN (6, 7);