Complete Weeks of current Quarter ..

Question

Hello,
we have a time table (exp.: D_TIME) listing every day between 1.1.2006 to 1.1.2017
and i am triying to filter with following criteria ..
Complete Weeks of the current Quarter (Only weeks wich are from Monday to Sonday included in the current quarter)
AND < SYSDATE
The borders of this Filter are correct but in some days teh result is empty ..
+
SELECT * D_TIME
WHERE
D_TIME.DATE_X BETWEEN NEXT_DAY(TRUNC(TRUNC(trunc(SYSDATE), 'iw'),'Q')-1,'Monday')
AND TRUNC(trunc(SYSDATE),'iw')-1
+
ANY Suggestions .. ? Thanks ..

Answer 1

Hi,
To find all the days between the first Monday in this quarter, and the last Sunday before today, inclusive:
SELECT  *
FROM     d_time
WHERE     date_x    BETWEEN TRUNC ( TRUNC (SYSDATE, 'Q') + 6
                       , 'IW'
            AND       TRUNC (SYSDATE, 'IW') - 1
;This assumes that d_time.date_x is always midnight (00:00:00).
When you TRUNCate a date to some longer time division (such as a quarter),that implies TRUNCating to all smaller divisons that are contained in it, so
TRUNC (d, 'IW') truncates the hours, minutes and seconds; there's no need to say
TRUNC (TRUNC (d), 'IW').
NEXT_DAY is very handy, but it depends on NLS_DATE_LANGUAGE. TRUNC (d, 'IW') works the same regardless of your NLS settings.
This may still retun 0 rows. For example, as of Sunday, October 9, 2001 there had not been a Monday-to-Sunday week that fell entirely in the current quarter. (The week starting on Monday, Octoeber 3 was not yet complete, by a fraction of a day.)
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables, and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
Always say which version of Oracle you're using.