ORACLE中函数MONTHS_BETWEEN…
2017-03-01 09:21
543 查看
原文地址:ORACLE中函数MONTHS_BETWEEN的使用作者:tbqnot19格式:MONTHS_BETWEEN(DATE1,DATE2)
MONTHS_BETWEEN函数返回两个日期之间的月份数。
SQL> select months_between(to_date('20090228',
'yyyymmdd'), to_date('20080228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
12
SQL> select months_between(to_date('20090228',
'yyyymmdd'), to_date('20080229', 'yyyymmdd')) as months from
dual;
MONTHS
----------
12
SQL> select months_between(to_date('20080229',
'yyyymmdd'), to_date('20070228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
12
SQL> select months_between(to_date('20100331',
'yyyymmdd'), to_date('20100228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100128', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1
SQL> select months_between(to_date('20100327',
'yyyymmdd'), to_date('20100228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
.967741935
SQL> select months_between(to_date('20100330',
'yyyymmdd'), to_date('20100228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1.06451613
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100130', 'yyyymmdd')) as months from
dual;
MONTHS
----------
.935483871
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100131', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100127', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1.03225806
30/31=0.96774193548387096774193548387097
33/31=1.0645161290322580645161290322581
29/31=0.93548387096774193548387096774194
32/31=1.032258064516129032258064516129
在ORACLE中计算月份的差值,都是月底或是日期相同,都会按整月计算。
如果计算结果不是整数,ORACLE会把31作为分母来计算。
MONTHS_BETWEEN函数返回两个日期之间的月份数。
SQL> select months_between(to_date('20090228',
'yyyymmdd'), to_date('20080228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
12
SQL> select months_between(to_date('20090228',
'yyyymmdd'), to_date('20080229', 'yyyymmdd')) as months from
dual;
MONTHS
----------
12
SQL> select months_between(to_date('20080229',
'yyyymmdd'), to_date('20070228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
12
SQL> select months_between(to_date('20100331',
'yyyymmdd'), to_date('20100228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100128', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1
SQL> select months_between(to_date('20100327',
'yyyymmdd'), to_date('20100228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
.967741935
SQL> select months_between(to_date('20100330',
'yyyymmdd'), to_date('20100228', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1.06451613
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100130', 'yyyymmdd')) as months from
dual;
MONTHS
----------
.935483871
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100131', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1
SQL> select months_between(to_date('20100228',
'yyyymmdd'), to_date('20100127', 'yyyymmdd')) as months from
dual;
MONTHS
----------
1.03225806
30/31=0.96774193548387096774193548387097
33/31=1.0645161290322580645161290322581
29/31=0.93548387096774193548387096774194
32/31=1.032258064516129032258064516129
在ORACLE中计算月份的差值,都是月底或是日期相同,都会按整月计算。
如果计算结果不是整数,ORACLE会把31作为分母来计算。
相关文章推荐
- Oracle months_between()和add_months()函数
- oracle 日期常用函数 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- ORACLE中函数MONTHS_BETWEEN的使用
- oracle 日期常用函数 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- oracle 日期常用函数 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- Oracle的months_between(date1,date2)函数注意点
- oracle的months_between的注意点
- oracle中的add_months()函数总结
- ORACLE 日期函数 MONTHS_BETWEEN
- oracle 日期常用函數 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- oracle 日期常用函數 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- oracle中的add_months()函数总结
- TRUNC函数与MONTHS_BETWEEN函数
- Oracle开发之窗口函数 rows between unbounded preceding and current row
- oracle时间函数(三)last_day(),add_months(),month between()
- Oracle MONTHS_BETWEEN
- ORACLE 日期函数 MONTHS_BETWEEN
- oracle 日期常用函數 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- oracle 日期常用函數 (ADD_MONTHS,LAST_DAY,NEXT_DAY,MONTHS_BETWEEN,NEW_TIME,ROUND,TRUNC)
- ORACLE 日期函数 MONTHS_BETWEEN