How to iterate over a date range in PL/SQL

Question

I need to write a report that generates summary totals against a table with date ranges for each record.

table data:
option   start_date   end_date
opt1              


        

Answer 1

Just as an addition to the other techniques, one way I iterate over dates is the following:

/* List of days for the past year, starting with today at midnight */
SELECT TRUNC(SYSDATE) + 1 - LEVEL AS today,
       TRUNC(SYSDATE) + 2 - LEVEL AS tomorrow
FROM DUAL
CONNECT BY LEVEL <= 365