概述
8 个答案:
答案 0 :(得分:12)
这个更简单,但可能仍然不是最简单的方法:
SELECT
ADD_MONTHS(TRUNC(SYSDATE, 'Q'), -3) AS First,
TRUNC(SYSDATE, 'Q') - 1 AS Last
FROM DUAL
也许你也可以使用像这样的子选择来排除一些重复的代码:
SELECT
ADD_MONTHS(D, -3) AS First,
D - 1 AS Last
FROM (SELECT TRUNC(SYSDATE, 'Q') AS D FROM DUAL)
答案 1 :(得分:3)
SELECT
TRUNC(SYSDATE, 'Q')AS FIRST_DAY,
last_day(add_months(TRUNC(SYSDATE, 'Q'),2)) as LAST_DAY
FROM DUAL;
答案 2 :(得分:1)
SELECT MIN (t), MAX (LAST_DAY (t))
FROM ( SELECT ADD_MONTHS (TRUNC (SYSDATE, 'yyyy'), LEVEL - 1) t,
TO_CHAR (ADD_MONTHS (TRUNC (SYSDATE, 'yyyy'), LEVEL - 1), 'Q')
r
FROM DUAL
CONNECT BY LEVEL <= 12) a
WHERE a.r = 4;
答案 3 :(得分:0)
这是一种方法,它省去了必须计算出第一个和最后一个日期并将结果放在主查询的where子句中的麻烦:
select
*,
round(to_number(to_char(some_date, 'mm')) / 4) as quarter
from x
where round(to_number(to_char(some_date, 'mm')) / 4) = round(to_number(to_char(sysdate, 'mm')) / 4)
答案 4 :(得分:0)
我知道这个话题很老而且很封闭,但这就是我正确解决问题的方式。
SELECT TRUNC(to_date('05.06.2020', 'dd.mm.yyyy'), 'Q') f_date,
LAST_DAY(ADD_MONTHS(TRUNC(TO_DATE('05.06.2020', 'dd.mm.yyyy'), 'Q'),2) ) l_date
FROM dual;
答案 5 :(得分:0)
SELECT DATE_CURRENT
,TRUNC(DATE_CURRENT,'Q')AS Q1F
,LAST_DAY(ADD_MONTHS(TRUNC(DATE_CURRENT,'Q'),2))AS Q1L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 1))AS Q2F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 1)), - 3)+1 AS Q2L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 4))AS Q3F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 4)), - 3)+1 AS Q3L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 7))AS Q4F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 7)), - 3)+1 AS Q4L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 10))AS Q5F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 10)), - 3)+1 AS Q5L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 13))AS Q6F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 13)), - 3)+1 AS Q6L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 16))AS Q7F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 16)), - 3)+1 AS Q7L
,LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 19))AS Q8F
,ADD_MONTHS(LAST_DAY(ADD_MONTHS(trunc(DATE_CURRENT,'Q'), - 19)), - 3)+1 AS Q8L
从
(
SELECT TO_DATE('05 .03.2017','DD.MM.YYYY')AS DATE_CURRENT FROM DUAL
UNION SELECT TO_DATE('30 .06.2014','DD.MM.YYYY')AS DATE_CURRENT FROM DUAL
UNION SELECT TO_DATE('30 .04.2014','DD.MM.YYYY')AS DATE_CURRENT FROM DUAL
UNION SELECT TO_DATE('31 .03.2014','DD.MM.YYYY')AS DATE_CURRENT FROM DUAL
)
答案 6 :(得分:0)
典型的,只要我寻求帮助,我就会找到一些博客,让我知道如何继续下去。
管理一起敲响一些声明,但这绝对是丑陋的。 :)
select
TRUNC(ADD_MONTHS(sysdate, -3),'Q') as first,
LAST_DAY(TRUNC(ADD_MONTHS(sysdate, -3),'Q')+ 85) as last
from dual;
这看起来很有效,但如果有人知道更好的解决方案,请告诉我! (to_date('27-JAN-11')作为示例日期......)
编辑:修正了一个错误 - 在一个季度的第一天增加3个月并不总是在同一季度结束。现在它更加丑陋 - 该死的格里高利历!
答案 7 :(得分:0)
SELECT DATE_CURRENT
, TRUNC (ADD_MONTHS (DATE_CURRENT, -6), 'Q') AS FIRST
, LAST_DAY (TRUNC (ADD_MONTHS (DATE_CURRENT, -6), 'Q') + 85) AS LAST
, LAST_DAY (ADD_MONTHS(trunc(DATE_CURRENT,'Q'),-1)) AS PREVIOUS_QUARTER_END
, ADD_MONTHS(LAST_DAY (ADD_MONTHS(trunc(DATE_CURRENT,'Q'),-1)),-3)+1 AS PREVIOUS_QUARTER_START
FROM
(
SELECT TO_DATE ('31.07.2014', 'DD.MM.YYYY') AS DATE_CURRENT FROM DUAL
UNION SELECT TO_DATE ('30.06.2014', 'DD.MM.YYYY') AS DATE_CURRENT FROM DUAL
UNION SELECT TO_DATE ('30.04.2014', 'DD.MM.YYYY') AS DATE_CURRENT FROM DUAL
UNION SELECT TO_DATE ('31.03.2014', 'DD.MM.YYYY') AS DATE_CURRENT FROM DUAL
)
order by DATUM;
最后
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