我写了一个查询来选择特定日期。
如果我在第一个财政星期一运行查询，即季度结束后的第一个星期一，那么它应该选择整个上个月的日期。
如果我在其他星期一运行查询，那么它应该选择当前季度的数据直到今天的日期。
以下是我尝试的查询：
SELECT
CASE
WHEN Q.GL_PERIOD_NUMBER IN (1,4,7,10,12) AND Q.DAY_NAME='MONDAY' AND Q.MONTHEND_FLAG='Y' THEN 'FULL_QUARTER'
WHEN Q.GL_PERIOD_NUMBER IN (2,3,5,6,8,9,11) AND Q.DAY_NAME='MONDAY' AND Q.MONTHEND_FLAG='N' THEN 'PARTIAL QUARTER'
ELSE 'NO RUN'
END RUN
FROM
(SELECT A.GL_MONTHEND_FLAG MONTHEND_FLAG, B.DAY_NAME DAY_NAME , B.gl_period_number GL_PERIOD_NUMBER
FROM
(SELECT TRIM(GL_MONTHEND_FLAG) GL_MONTHEND_FLAG
FROM RSE.RSE_CD_D_CALENDAR WHERE TRUNC(CALENDAR_DATE)=TRUNC(SYSDATE-12)) A,
(SELECT TRIM(DAY_NAME) DAY_NAME, gl_period_number GL_PERIOD_NUMBER
FROM RSE.RSE_CD_D_CALENDAR WHERE TRUNC(CALENDAR_DATE)=TRUNC(SYSDATE-10)) B) Q;
我已经找到了条件，但我无法设计选择日期的语法。
如果有人提示，那对我有帮助！
以下是表格结构：
desc RSE_CD_D_CALENDAR
Name Null Type
------------------------- ---- -----------------
CALENDAR_DATE DATE
DATE_REFERENCE VARCHAR2(10 CHAR)
GL_DAYEND_COMPLETE_FLAG VARCHAR2(1 CHAR)
DAY_OF_WEEK NUMBER
DAY_NAME VARCHAR2(15 CHAR)
DAY_NUMBER NUMBER
DW_PROCESSING_WEEK_ID NUMBER
DW_FISCAL_WEEK_ID NUMBER
CALENDAR_WEEK_NUMBER NUMBER
GL_WEEK_NUMBER NUMBER
GL_WEEKEND_FLAG VARCHAR2(1 CHAR)
GL_WEEKEND_COMPLETE_FLAG VARCHAR2(1 CHAR)
DW_MONTH_ID NUMBER
GL_PERIOD VARCHAR2(6 CHAR)
GL_PERIOD_NUMBER NUMBER
MONTH_SHORT_NAME VARCHAR2(3 CHAR)
MONTH_LONG_NAME VARCHAR2(15 CHAR)
GL_PERIOD_KEY NUMBER
GL_MONTHEND_FLAG VARCHAR2(1 CHAR)
GL_MONTHEND_COMPLETE_FLAG VARCHAR2(1 CHAR)
DW_QTR_ID NUMBER
QTR_NUMBER NUMBER
GL_QTR_END_FLAG VARCHAR2(1 CHAR)
GL_QTR_END_COMPLETE_FLAG VARCHAR2(1 CHAR)
GL_YEAR NUMBER
GL_YEAREND_FLAG VARCHAR2(1 CHAR)
GL_YEAREND_COMPLETE_FLAG VARCHAR2(1 CHAR)
MANUAL_ADJ_COMPLETE_FLAG VARCHAR2(1 CHAR)
PROCESSING_WEEK_RELATIVE NUMBER
FISCAL_WEEK_RELATIVE NUMBER
MONTH_RELATIVE NUMBER
QTR_RELATIVE NUMBER
YEAR_RELATIVE NUMBER
CALENDAR_MONTH_NUMBER NUMBER
CALENDAR_MONTH_SHORT_NAME VARCHAR2(4000)
BILLING_DAY_FLAG VARCHAR2(1)
QUARTER_NAME VARCHAR2(6)
DW_CALENDAR_MONTH_ID NUMBER
CALENDAR_MONTH_RELATIVE NUMBER
CALCULATION_DATE DATE
BILLING_DAY_USA NUMBER
BILLING_DAY NUMBER
相关字段存在于当前，0，-1，-2表示相应的前几个月等。
答案 0 :(得分：2)
I think I would go with this approach:
with quarter_start_dt as (
select
case when trunc(sysdate-7, 'Q') = trunc(sysdate, 'Q') then -- current quarter
trunc(sysdate, 'Q')
when trunc(sysdate-7, 'Q') <> trunc(sysdate, 'Q') then -- previous quarter
trunc(sysdate-7, 'Q')
end qs_dt
from dual)
select * from table, quarter_start_dt where
condition_dt >= qs_dt;
additionally I guess, that for previous quarter you'd like to pick the quarter end date and use it as an additional condition to cut out anything done after the quarter end date.
EDIT: The "with" query is used to pick the boundary date - qs_dt (quarter start date). trunc(date, 'Q') returns start of the quarter date, so I'm checking if it was the same or different quarter a week ago - if it is the same quarter then use current quarter start date as boundary date, if week ago the quarter start date was different, it means it's a start of the new quarter and you want to use the start of previous quarter as the boundary date. Then take your query (which I replaced with simple select for readability) and use qs_dt as the quarter start date in the where clause.
Hope it helps.