How do I select dates between two given dates in an Oracle query?

How do I select dates between two given dates in an开发者_开发百科 Oracle query?

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SELECT TO_DATE('12/01/2003', 'MM/DD/YYYY') - 1 + rownum AS d
FROM all_objects
WHERE TO_DATE('12/01/2003', 'MM/DD/YYYY') - 1 + rownum <= TO_DATE('12/05/2003', 'MM/DD/YYYY')

from

http://forums.devshed.com/oracle-development-96/select-all-dates-between-two-dates-92997.html

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SELECT * FROM your_table WHERE your_date_field BETWEEN DATE '2010-01-01' AND DATE '2011-01-01';

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You can use the LEVEL pseudocolumn in a tricky way to generate a series, so, for example, to get the list of days between today and 20 days from now I can:

select trunc(sysdate+lvl) from
  (select level lvl from dual connect by level < ((sysdate+20)-sysdate - 1) )
order by 1  

Generically you can see how this would apply for any two given dates.

select trunc(early_date+lvl) from
  (select level lvl from dual connect by level < (later_Date-early_date-1) )
order by 1 

And you can adjust the clauses if you want to include the two end dates as well.

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You could also use the below to get a list of calendar dates between a date range (similar to Michael Broughton's solution)

select (trunc(sysdate) - (trunc(sysdate) - (to_date('start_date')))) -1 + level  from dual
connect by level <= 
((select (trunc(sysdate) - (trunc(sysdate) - (to_date('end_date'))))-
(trunc(sysdate) - (trunc(sysdate) - (to_date('start_date'))))from dual)+1);

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I do this so often for a scheduling app I work on that I created a pipelined table function. Sometimes I need days, hours or 15 minutes between times. This is not exactly my function, because my code is in a package. For example, here, I'm getting days between Jan 1 2020 and Jan 10 2020:

SELECT
    days.date_time
FROM
    table(between_times(TO_DATE('2020-01-01'),TO_DATE('2020-01-10'),(60*24), 'Y')) days

The pipelined function:

function between_times(i_start_time TIMESTAMP, i_end_time TIMESTAMP, i_interval_in_minutes NUMBER, include_end_time VARCHAR2 := 'N')
  RETURN DateTableType  PIPELINED
  AS
    time_counter TIMESTAMP := i_start_time;
  BEGIN
    IF i_start_time IS NULL OR i_end_time IS NULL or i_start_time > i_end_time OR i_interval_in_minutes IS NULL OR
      i_interval_in_minutes <= 0 THEN
        RETURN;
      END IF;
      LOOP

        -- by default does not include end time
        if (include_end_time = 'Y') THEN
          exit when time_counter > i_end_time;
        ELSE
          exit when time_counter >= i_end_time;
        END IF;
        
        
        pipe row(DateType( time_counter ));     
        time_counter := time_counter + i_interval_in_minutes/(60*24);
        
      END LOOP;
      
      EXCEPTION  WHEN NO_DATA_NEEDED THEN NULL;      
  END;

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Use "between". In a general sense:

select * from someTable where dateCol between date1 and date2;

note that dateCol is defined as a date and date1 and date2 are also date values. If these aren't dates, then you'll convert them to dates using to_date function.

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with all_days as (select trunc(to_date('12-03-2017','dd-mm-yyyy')+levl)-1 as all_dates from (select level levl from dual connect by level < (sysdate-to_date('12-03-2017','DD-MM-YYYY')+1) ) order by 1) select count(*) as no_of_days from all_days where ltrim(rtrim(to_char(all_dates,'DAY'))) not in ('SATURDAY','SUNDAY');