Need to find invalid coverage period

Question

Hi Gurus
I have the following data:
Creation of Table
DROP TABLE cal_rules;
DROP TABLE cal_rules_dtl;
CREATE TABLE cal_rules
rule_id NUMBER(10),
effective_date DATE,
termination_date DATE);
CREATE TABLE cal_rules_dtl
rule_id NUMBER(10),
as_of_date DATE);
Insertion in table
INSERT INTO cal_rules
(SELECT 100,to_date('01-JAN-2013') effective_date,to_date('31-DEC-2013') termination_date FROM dual
UNION ALL
SELECT 200,to_date('01-JAN-2013') effective_date,to_date('31-DEC-2013') FROM dual
UNION ALL
SELECT 300,to_date('01-JAN-2013') effective_date,NULL FROM dual
UNION ALL
SELECT 400,to_date('01-JUN-2013') effective_date,to_date('31-DEC-2013') termination_date FROM dual
UNION ALL
SELECT 500,to_date('01-JUN-2013') effective_date,NULL termination_date FROM dual
UNION ALL
SELECT 600,to_date('01-JUN-2013') effective_date,to_date('31-DEC-2013') termination_date FROM dual
INSERT INTO cal_rules_dtl
(SELECT 100, to_date('02-JAN-2013') as_of_date FROM DUAL --GAP --IT SHOULD START WITH 01-JAN-2013
UNION ALL
SELECT 200, to_date('01-JAN-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 200, to_date('05-JAN-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 200, to_date('01-JAN-2014') as_of_date  FROM DUAL --AS_OF_dATE IS AFTER CAL_RULES TERMINATION_DATE(31-DEC-2013)
UNION ALL
SELECT 300, to_date('31-DEC-2012') as_of_date  FROM DUAL --AS_OF_DATE IS BEFORE CAL_RULES EFFECTIVE_DATE
UNION ALL
SELECT 400, to_date('01-JUN-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 400, to_date('31-AUG-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 500, to_date('01-JUN-2013') as_of_date  FROM DUAL
UNION ALL
SELECT  500, to_date('01-JUL-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 500, to_date('01-SEP-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 500, to_date('01-OCT-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 500, to_date('01-OCT-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 600, to_date('10-JUN-2013') as_of_date  FROM DUAL
UNION ALL
SELECT 600, to_date('01-JUN-2013') as_of_date  FROM DUAL
COMMIT;
Required Output
Rule_id           Effective_date          Termination_date
100                    01-JAN-13                     31-DEC-13     -- Gap because in table cal_rules_dtl as_of_date against this rule id is 02-jan-2013
200                    01-JAN-13                     31-DEC-13     -- as_of_date against rule id 200 is greater than cal_rules.temination_date
300                     01-JAN-13                    null                 -- as_of_date against rule id 30 is less than cal_rules.effective_date
Need to report data by using the following conditions:
If any As_of_data less than effective_date (see rule_id 300)
If any As_of_data greater than termination_date (see rule_id 200)
if there is a gap between as_of_date and effective_date (see rule_id 100)
Please guide me and let me know if you have any question. Thanks

Answer 1

I think it is nor correct because there can be row , for example
SELECT 100, to_date('05-JAN-2013') as_of_date FROM DUAL --GAP --IT SHOULD START WITH 01-JAN-2013
in your case RuleId with 100 will not be in output for condition where d.as_of_date - effective_date = 1
I think OP wants this :
select distinct q.rule_id, q.effective_date, q.termination_date from (
SELECT c.as_of_date, t.*,
       min(c.as_of_date) over (partition by c.rule_id order by c.as_of_date range between unbounded preceding and  current row),
       case when (c.as_of_date != t.effective_date and
                  t.effective_date  != min(c.as_of_date) over (partition by c.rule_id order by c.as_of_date range between unbounded preceding and  current row))
             or not (min(c.as_of_date) over (partition by c.rule_id) between t.effective_date and t.termination_date)
             or not (max(c.as_of_date) over (partition by c.rule_id) between t.effective_date and t.termination_date)
                 then -1
       end myRule
FROM cal_rules t
join cal_rules_dtl c
on c.rule_id = t.rule_id
)q
where myRule = -1
Ramin Hashimzade