c# - Create a number for each different field of a table -


suppose have table of cars. have brand column, , column model. marks can repeated. , query shows me mark in 1 column, column in model, , in column generate number each car brand, has move up. in following example show how should result of query.

brand           model                   brand number             --------------- ----------------------- ---------------------   ford            ranger                  1     ford            f100                    1           ford            explorer                1  chevrolet       silverado               2             chevrolet       luv                     2         mitsubishi      l200                    3          toyota          hilux                   4

could tell me how generate number each mark in query?

if there's many-to-one relationship between model , make should in separate tables. this:

id | name --------- 1  | ford 2  | chevrolet 3  | mitsubishi 4  | toyota  id | makeid | name ------------------- 1  | 1      | ranger 2  | 1      | f100 3  | 1      | explorer 4  | 2      | silverado 5  | 2      | luv 6  | 3      | l200 7  | 4      | hilux

then query simple select statement joins 2 tables:

select     make.name brand,     model.name model,     make.id number     make     inner join model         on make.id = model.makeid

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