SELECT trunc(sysdate,'q'), trunc(add_months(sysdate,3),'q') FROM dual 每半年的第一天 SELECT add_months(trunc(sysdate,'yyyy'),6) FROM dual 当月天数 SELECT extract(day from last_day(sysdate)) FROM dual 当年天数 SELECT trunc(add_months(sysdate,12),'yyyy')-trunc(sysdate,'yyyy') FROM ...
add_months(date,m) add_months函数参数m是正数往后推m个月,如果是负数往前推m个月 select add_months('2021-09-01',1) as month1,add_months('2021-09-01',-1) as month2 from dual; month1 month2 2021-10-01 2021-08-01 本文实践过程中参考资料如下: 1.【hive常用函数一】日期函数 2.Hive中...
1,函数:ADD_MONTHS(DATE,INTEGER) --将指定时间加上几个月后的时间例如:SELECT ADD_MONTHS(SYSDATE, 1) FROM DUAL; --当前时间加1个月,即一个月后的时间。 SELECT ADD_MONTHS(SYSDATE, -1) FROM&n oracle 时间 INTERVAL ADD_MONTHS 原创 zhuwensheng ...
3. 时间计算函数 Presto提供add_months、date_diff等函数,可以在线性的时间上做加减乘除等变换,实现对日期的加减等时间的计算。 总之,Presto的时间函数提供了便于用户处理时间的基础能力,用户可以根据自己的实际情况使用这些函数来实现自己的查询以及报表的需求。©...
select add_months(date_sub(current_date,dayofmonth(current_date)-1),1); --下个月第1天 presto time官网介绍:https://prestodb.io/docs/current/functions/datetime.html 其它参考:Hive中日期函数总结_qq646748739的专栏-CSDN博客_hive datetime
add_months(TRUNC('2020-12-12','MM'),-1)AS"上月第一天", add_months('2020-12-12',-12)AS"去年当月当天", date_add(add_months(TRUNC('2020-12-12','MM'),-1),day('2020-12-12')-1)as"上月第一天至环比相同天数" 待续...
date_add('2020-12-12',-1)AS"昨天",TRUNC('2020-12-12','MM')AS"当月第一天",add_months(TRUNC('2020-12-12','MM'),-12)AS"去年当月第一天",add_months(TRUNC('2020-12-12','MM'),-1)AS"上月第一天",add_months('2020-12-12',-12)AS"去年当月当天",date_add(add_months(TRUNC('...
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