Agree with you Armand, but i'm not in charge of the database so i can't do anything about it. I've just been asked to create a query which shall be used in a report. Regards Paal
Armand Turpel <[EMAIL PROTECTED]> wrote: Hello, Sone or later your get tired with this table construct. I recommande you to split this table into 4 tables: Tables: - country ex.: id_country country_name - company ex.: id_company company_name - activity ex.: id_activity activity_name - relation-country-company-activity ex.: id_country id_company id_activity Example: Select countries in which the company with id 3 has activities with id 6 SELECT c.country_name FROM country AS c relation-country-company-activity AS rel WHERE rel.id_country=c.id_country AND rel.id_company=3 AND rel.id_activity=6 There are many other SELECT combinations. Armand --------------------------------------------------------------- Paal Eriksen wrote: >Hi i have a challenge for you. I'm struggling with this self join query. I have a >table which among several contains theese fields: id, strname, iparentid > >id is primary key and iparentid show who the child of id. There are 4 level deepth in >this table, i.e. like this > >iID--------strName-------iParentID >1----------Root--------0 >2----------Africa-------1 >3----------CompanyA----2 >4----------Activity 1---3 >5----------Activity 2---3 >6----------Company B----2 >7----------Europe-----1 >8----------Company C----7 >9----------Activity 1---8 > > >I'm not sure of how to create this self join query, but i've started with this: > >select tab1.id, tab1.strname, tab1.iparentid >from tblproject tab1 inner join tblproject tab2 on tab1.iparentid=tab2.id > >What i'm trying to do is to create a query who concatenate and will list the data >something like this: > >region, company, activity i.e. > >Africa, Company A, Activity 1 >Africa, Company A, Activity 2 >Africa, Company B, Activity 1 >Africa, Company C > >So if there's Activity register it should be listed if not just list region and >company. > >is this possible to do? > >Thanks >Paal > > >Ny versjon av Yahoo! Messenger >Nye ikoner og bakgrunner, webkamera med superkvalitet og dobbelt så morsom > > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] Ny versjon av Yahoo! Messenger Nye ikoner og bakgrunner, webkamera med superkvalitet og dobbelt så morsom
