Re: [Help-glpk] Connecting Excel 2007 to GLPK

[Aly Megahed]

Thanks for your message.

Actually, I tried what you told me and got the following message:

"data source name not found and no default driver specified"

Do you or anyone have an idea about that? or have really connected to Excel 
2007 (a .xlsx file) before?

Thanks,

Aly

----- Original Message -----
From: "Andrew Makhorin" <address@hidden>
To: address@hidden
Cc: address@hidden
Sent: Tuesday, April 27, 2010 5:52:00 PM GMT -05:00 US/Canada Eastern
Subject: Re: [Help-glpk] Connecting Excel 2007 to GLPK

> I'm trying to connect Excel 2007 to GLPKthrough ODBC, but I have a
> problem.

> I define my file in the driver Microsoft Excel Driver (*.xls,
> *.xlsx, *.xlsm, *.xlsb), but then when I put that in my GLPK code, I
> get the message "string literal too long".

> Here's the part of my code for that:

> table pq_ivt {i in I, v in V, t in T} OUT 'ODBC'
>   'DRIVER={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm,
> *.xlsb)};READONLY=FALSE;dbq=GEE_Outputs_April_2010.xlsx'
>   'INSERT INTO [Purchased Quantities - pq$]'
>   '(Suppliers, Components, Periods, Purchased_Quantities)'
>   'VALUES(?, ?, ?, ?);' :
>   i ~ Suppliers, v ~ Components, t ~ Periods, pq[i,v,t] ~ 
> Purchased_Quantities;

> I also tried 'DRIVER={Microsoft Excel Driver
> (*.xlsx};READONLY=FALSE;dbq=GEE_Outputs_April_2010.xlsx', but still
> didn't work.

> Any help will be greatly appreciated.

You can split a long sql statement into shorter ones, for example,
as follows (all string literals will be concatenated):

table pq_ivt {i in I, v in V, t in T} OUT 'ODBC'
  'DRIVER='
  '{Microsoft Excel Driver '
  '(*.xls, *.xlsx, *.xlsm,*.xlsb)};'
  'READONLY=FALSE;'
  'dbq=GEE_Outputs_April_2010.xlsx'
  'INSERT INTO [Purchased Quantities - pq$]'
  '(Suppliers, Components, Periods, Purchased_Quantities)'
  'VALUES(?, ?, ?, ?);' :
  i ~ Suppliers, v ~ Components, t ~ Periods,
  pq[i,v,t] ~ Purchased_Quantities;




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