当我使用 BETWEEN DATEADD(MONTH,-4,CURRENT_DATE) AND DATEADD(MONTH,-1,CURRENT_DATE) 时得到 0 个结果

Question

我正在尝试从我创建的

OTO_HISTORICAL_TRACKING_DETAIL

CTE 获取过去 3 个月的数据。

OTO_START_DATE

采用

DATE

格式 - 'YYYY-MM-DD'。

此查询返回 0 个结果

SELECT*
FROM OTO_HISTORICAL_TRACKING_DETAIL
WHERE OTO_START_DATE BETWEEN ADD_MONTHS(CURRENT_DATE, -4) 
                         AND ADD_MONTHS(CURRENT_DATE, -1)

但是，当我使用此查询时，我得到结果

SELECT *
FROM OTO_HISTORICAL_TRACKING_DETAIL
WHERE OTO_START_DATE BETWEEN ADD_MONTHS(CURRENT_DATE, -4) 
                         AND CURRENT_DATE

Answer 1

所以让我们获取一些简单的数据来检查逻辑：

with OTO_HISTORICAL_TRACKING_DETAIL(OTO_START_DATE) as (
    select * from values 
    ('2023-08-01'::date),
    ('2023-09-01'::date),
    ('2023-10-01'::date),
    ('2023-11-01'::date),
    ('2023-12-01'::date)   
)
SELECT *
FROM OTO_HISTORICAL_TRACKING_DETAIL
WHERE OTO_START_DATE BETWEEN ADD_MONTHS(CURRENT_DATE, -4) 
                         AND ADD_MONTHS(CURRENT_DATE, -1)

给出：

所以让我们通过查看所有值来了解可能发生的情况：

with OTO_HISTORICAL_TRACKING_DETAIL(OTO_START_DATE) as (
    select * from values 
    ('2023-06-01'::date),
    ('2023-07-01'::date),
    ('2023-08-01'::date),
    ('2023-09-01'::date),
    ('2023-10-01'::date),
    ('2023-11-01'::date),
    ('2023-12-01'::date)   
)
SELECT *
    ,CURRENT_DATE
    ,ADD_MONTHS(CURRENT_DATE, -4) as date_start
    ,ADD_MONTHS(CURRENT_DATE, -1) as date_end
    ,OTO_START_DATE BETWEEN date_start and date_end as filter_logic
FROM OTO_HISTORICAL_TRACKING_DETAIL
--WHERE OTO_START_DATE BETWEEN ADD_MONTHS(CURRENT_DATE, -4) 
--                         AND ADD_MONTHS(CURRENT_DATE, -1)

这可能是问题所在，current_date 是确切的“日期”，因此一个月前，可能不是您想要的。也许您想要这些月份的开始/结束，此时您需要使用 DATE_TRUNC('month', current_month) 和 LAST_DATE

喜欢：

with OTO_HISTORICAL_TRACKING_DETAIL(OTO_START_DATE) as (
    select * from values 
    ('2023-06-01'::date),
    ('2023-07-01'::date),
    ('2023-08-01'::date),
    ('2023-09-01'::date),
    ('2023-10-01'::date),
    ('2023-11-01'::date),
    ('2023-12-01'::date)   
)
SELECT *
    ,CURRENT_DATE
    --,ADD_MONTHS(CURRENT_DATE, -4) as date_start
    --,ADD_MONTHS(CURRENT_DATE, -1) as date_end
    --,OTO_START_DATE BETWEEN date_start and date_end as filter_logic

    ,ADD_MONTHS(date_trunc('month', CURRENT_DATE), -3) as month_start
    ,last_day(CURRENT_DATE, 'month') as month_end
    ,OTO_START_DATE BETWEEN month_start and month_end as filter_logic_2
FROM OTO_HISTORICAL_TRACKING_DETAIL

给予：