Possible sybase sql query -


i'm trying sql after many years away. i'm new sybase well. can please suggest possible query following problem?

there table called vegetables follows.

| product | price | date     | | beans   | 1.78  | 20040903 | | beans   | 1.79  | 20040902 | | potato  | 1.78  | 20040902 |

i need latest available prices each vegetable. intended database sybase. many thanks.

you can use subquery max(date) each product , join table:

select v1.product,    v1.price,   v1.date vegetables v1 inner join (   select product, max(date) maxdate   vegetables   group product ) v2   on v1.product = v2.product   , v1.date = v2.maxdate;

see sql fiddle demo (demo sql server syntax should valid).

if version of sybase supports windowing functions, can use following:

select product, price, date  (   select product, price, date,     row_number() over(partition product order date desc) rn   vegetables ) v rn = 1;

see sql fiddle demo


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