[Haskell-cafe] Re: Could someone give me a sample about haskelldb?

[Magicloud Magiclouds]

I changed it, some other problem occured.
1. How to compare a BoolT column to a True? "t!c .<>. True" could not work.
2. What shoud I use after "!"? Like table!col, recordset!col, what is col?
Thanks.

On Fri, Jun 19, 2009 at 1:24 PM, Magicloud
Magiclouds<magicloud.magiclouds at gmail.com> wrote:
> Hi,
>  I am learning it following the very few documents on its site. Well,
> I failed, with the import modules, I still cannot compile it. The
> error is on "T.*".
>
>  6 import Database.HaskellDB.HDBC.SQLite3
>  7 import Database.HaskellDB
>  8 import Database.HaskellDB.DBSpec
>  9 import Database.HaskellDB.DBSpec.PPHelpers
> 10 import Database.HaskellDB.Query
>
> 48     q = do
> 49       t <- table $ Table "notes" []
> 50       restrict ( t!T.done .<>. False )
> 51       r <- project ( T.subject << t!T.subject )
> 52       order [ desc r T.priority
> 53             , desc r T.dt ]
> 54       return r
> --
> 竹密岂妨流水过
> 山高哪阻野云飞
>



-- 
竹密岂妨流水过
山高哪阻野云飞