Re: Calculated Column with simple math for price comparisons

Hi Patter ,

For the above requirement we don't need a calculation view to be created. Check the code below, I am re creating the scenario with an INNER JOIN.

  CREATE COLUMN TABLE "METALS_ONE_GEN"."TEST_TAB" (ID INTEGER,DATES DATE,PRICE INTEGER);  INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-03-10',50);     INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-03-15',50);    INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-03-25',100);    INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-03-20',80);    INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-03-30',75);    INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-04-04',150);    INSERT INTO "METALS_ONE_GEN"."TEST_TAB" VALUES ( 1 , '2014-04-9',450);
select A.DATES,       A.PRICE,      ( B.PRICE - A.PRICE )       from "METALS_ONE_GEN"."TEST_TAB" A        INNER JOIN "METALS_ONE_GEN"."TEST_TAB" B       ON    B.DATES = ADD_DAYS(A."DATES",5) ;

Looks like, the JOIN operation is more optimized than the Calculation view in this case . Depends on the data , JOIN type may very .

Sreehari

Message was edited by: Sreehari V Pillai