SQL-Model-Clause / Example 2 in Data Warehousing Guide 11G/Chapter 24

Question

Hi SQL-Experts
I have a RH 5.7/Oracle 11.2-Environment!
The sample schemas are installed!
I executed as in Example 2 in Data Warehousing Guide 11G/Chapter 24:
CREATE TABLE currency (
   country         VARCHAR2(20),
   year            NUMBER,
   month           NUMBER,
   to_us           NUMBER);
INSERT INTO currency
(SELECT distinct
SUBSTR(country_name,1,20), calendar_year, calendar_month_number, 1
FROM countries
CROSS JOIN times t
WHERE calendar_year IN (2000,2001,2002)
UPDATE currency set to_us=.74 WHERE country='Canada';and then:
WITH  prod_sales_mo AS       --Product sales per month for one country
SELECT country_name c, prod_id p, calendar_year  y,
   calendar_month_number  m, SUM(amount_sold) s
FROM sales s, customers c, times t, countries cn, promotions p, channels ch
WHERE  s.promo_id = p.promo_id AND p.promo_total_id = 1 AND
       s.channel_id = ch.channel_id AND ch.channel_total_id = 1 AND
       s.cust_id=c.cust_id  AND
       c.country_id=cn.country_id AND country_name='France' AND
       s.time_id=t.time_id  AND t.calendar_year IN  (2000, 2001,2002)
GROUP BY cn.country_name, prod_id, calendar_year, calendar_month_number
                    -- Time data used for ensuring that model has all dates
time_summary AS(  SELECT DISTINCT calendar_year cal_y, calendar_month_number cal_m
  FROM times
  WHERE  calendar_year IN  (2000, 2001, 2002)
                   --START: main query block
SELECT c, p, y, m, s,  nr FROM (
SELECT c, p, y, m, s,  nr
FROM prod_sales_mo s
                   --Use partition outer join to make sure that each combination
                   --of country and product has rows for all month values
  PARTITION BY (s.c, s.p)
     RIGHT OUTER JOIN time_summary ts ON
        (s.m = ts.cal_m
         AND s.y = ts.cal_y
MODEL
  REFERENCE curr_conversion ON
      (SELECT country, year, month, to_us
      FROM currency)
      DIMENSION BY (country, year y,month m) MEASURES (to_us)
                                --START: main model
   PARTITION BY (s.c c)
   DIMENSION BY (s.p p, ts.cal_y y, ts.cal_m m)
   MEASURES (s.s s, CAST(NULL AS NUMBER) nr,
             s.c cc ) --country is used for currency conversion
   RULES (
                      --first rule fills in missing data with average values
      nr[ANY, ANY, ANY]
         = CASE WHEN s[CV(), CV(), CV()] IS NOT NULL
              THEN s[CV(), CV(), CV()]
              ELSE ROUND(AVG(s)[CV(), CV(), m BETWEEN 1 AND 12],2)
           END,
                      --second rule calculates projected values for 2002
      nr[ANY, 2002, ANY] = ROUND(
         ((nr[CV(),2001,CV()] - nr[CV(),2000, CV()])
          / nr[CV(),2000, CV()]) * nr[CV(),2001, CV()]
         + nr[CV(),2001, CV()],2),
                      --third rule converts 2002 projections to US dollars
      nr[ANY,y != 2002,ANY]
         = ROUND(nr[CV(),CV(),CV()]
           * curr_conversion.to_us[ cc[CV(),CV(),CV()], CV(y), CV(m)], 2)
ORDER BY c, p, y, m)
WHERE y = '2002'
ORDER BY c, p, y, m;I got the following error:
ORA-00947: not enough values
00947. 00000 -  "not enough values"
*Cause:   
*Action:
Error at Line: 39 Column: 83But when I changed the part
curr_conversion.to_us[ cc[CV(),CV(),CV()], CV(y), CV(m)], 2) of 3.rd Rules to
curr_conversion.to_us[ cc[CV(),CV(),CV()] || '', CV(y), CV(m)], 2)or
curr_conversion.to_us[ cc[CV(),CV(),CV()] || null, CV(y), CV(m)], 2)It worked!
My questions:
1/Can anyone explain me why it worked and why it didn't work?
2/Rule 3 has not the same meaning as the comment, Is it an error? Or I misunderstood anything?
the comment is: third rule converts 2002 projections to US dollars the left side has y != 2002 Thank for any help !
regards
hqt200475
Edited by: hqt200475 on Dec 20, 2012 4:45 AM

Answer 1

Hi SQL-Experts
I have a RH 5.7/Oracle 11.2-Environment!
The sample schemas are installed!
I executed as in Example 2 in Data Warehousing Guide 11G/Chapter 24:
CREATE TABLE currency (
   country         VARCHAR2(20),
   year            NUMBER,
   month           NUMBER,
   to_us           NUMBER);
INSERT INTO currency
(SELECT distinct
SUBSTR(country_name,1,20), calendar_year, calendar_month_number, 1
FROM countries
CROSS JOIN times t
WHERE calendar_year IN (2000,2001,2002)
UPDATE currency set to_us=.74 WHERE country='Canada';and then:
WITH  prod_sales_mo AS       --Product sales per month for one country
SELECT country_name c, prod_id p, calendar_year  y,
   calendar_month_number  m, SUM(amount_sold) s
FROM sales s, customers c, times t, countries cn, promotions p, channels ch
WHERE  s.promo_id = p.promo_id AND p.promo_total_id = 1 AND
       s.channel_id = ch.channel_id AND ch.channel_total_id = 1 AND
       s.cust_id=c.cust_id  AND
       c.country_id=cn.country_id AND country_name='France' AND
       s.time_id=t.time_id  AND t.calendar_year IN  (2000, 2001,2002)
GROUP BY cn.country_name, prod_id, calendar_year, calendar_month_number
                    -- Time data used for ensuring that model has all dates
time_summary AS(  SELECT DISTINCT calendar_year cal_y, calendar_month_number cal_m
  FROM times
  WHERE  calendar_year IN  (2000, 2001, 2002)
                   --START: main query block
SELECT c, p, y, m, s,  nr FROM (
SELECT c, p, y, m, s,  nr
FROM prod_sales_mo s
                   --Use partition outer join to make sure that each combination
                   --of country and product has rows for all month values
  PARTITION BY (s.c, s.p)
     RIGHT OUTER JOIN time_summary ts ON
        (s.m = ts.cal_m
         AND s.y = ts.cal_y
MODEL
  REFERENCE curr_conversion ON
      (SELECT country, year, month, to_us
      FROM currency)
      DIMENSION BY (country, year y,month m) MEASURES (to_us)
                                --START: main model
   PARTITION BY (s.c c)
   DIMENSION BY (s.p p, ts.cal_y y, ts.cal_m m)
   MEASURES (s.s s, CAST(NULL AS NUMBER) nr,
             s.c cc ) --country is used for currency conversion
   RULES (
                      --first rule fills in missing data with average values
      nr[ANY, ANY, ANY]
         = CASE WHEN s[CV(), CV(), CV()] IS NOT NULL
              THEN s[CV(), CV(), CV()]
              ELSE ROUND(AVG(s)[CV(), CV(), m BETWEEN 1 AND 12],2)
           END,
                      --second rule calculates projected values for 2002
      nr[ANY, 2002, ANY] = ROUND(
         ((nr[CV(),2001,CV()] - nr[CV(),2000, CV()])
          / nr[CV(),2000, CV()]) * nr[CV(),2001, CV()]
         + nr[CV(),2001, CV()],2),
                      --third rule converts 2002 projections to US dollars
      nr[ANY,y != 2002,ANY]
         = ROUND(nr[CV(),CV(),CV()]
           * curr_conversion.to_us[ cc[CV(),CV(),CV()], CV(y), CV(m)], 2)
ORDER BY c, p, y, m)
WHERE y = '2002'
ORDER BY c, p, y, m;I got the following error:
ORA-00947: not enough values
00947. 00000 -  "not enough values"
*Cause:   
*Action:
Error at Line: 39 Column: 83But when I changed the part
curr_conversion.to_us[ cc[CV(),CV(),CV()], CV(y), CV(m)], 2) of 3.rd Rules to
curr_conversion.to_us[ cc[CV(),CV(),CV()] || '', CV(y), CV(m)], 2)or
curr_conversion.to_us[ cc[CV(),CV(),CV()] || null, CV(y), CV(m)], 2)It worked!
My questions:
1/Can anyone explain me why it worked and why it didn't work?
2/Rule 3 has not the same meaning as the comment, Is it an error? Or I misunderstood anything?
the comment is: third rule converts 2002 projections to US dollars the left side has y != 2002 Thank for any help !
regards
hqt200475
Edited by: hqt200475 on Dec 20, 2012 4:45 AM