[Help-glpk] changes in sql table driver

2009-11-05 Thread Andrew Makhorin
Hi Xypron, Is it possible to make changes in the sql table driver in order to concatenate some arguments (marked in some way) to construct the resulting sql statement? This would allow processing sql statements which are longer than 100 chars without changes in the language and in the translator.

[Help-glpk] Re: changes in sql table driver

2009-11-05 Thread Andrew Makhorin
Is it possible to make changes in the sql table driver in order to concatenate some arguments (marked in some way) to construct the resulting sql statement? Something like this, where a trailing backslash (or any other appropriate character) in the symbolic value means concatenation: table

Re: [Help-glpk] Re: changes in sql table driver

2009-11-05 Thread glpk xypron
Hello Andrew, I will provide a patch within the next week. Best regards Xypron Original-Nachricht Datum: Thu, 5 Nov 2009 23:17:25 +0300 Von: Andrew Makhorin An: help-glpk@gnu.org Betreff: [Help-glpk] Re: changes in sql table driver Is it possible to make changes in the

RE: [Help-glpk] mip formulations and reformulations

2009-11-05 Thread Meketon, Marc
Kipp Martin wrote several papers on reformulations of linear/integer programs to obtain tighter bounds and faster optimization times. I have used some of tricks successfully in the past couple of years. When this email from Andrew first came out, I asked Kipp if there was anything available on