Try our new documentation site (beta).


Retrieve the list of constraints in which a variable participates, and the associated coefficients. The result is returned as a GRBColumn object.

GRBColumn GetCol ( GRBVar var )


    var: The variable of interest.

    Return value:

    A GRBColumn object that captures the set of constraints in which the variable participates.

Try Gurobi for Free

Choose the evaluation license that fits you best, and start working with our Expert Team for technical guidance and support.

Evaluation License
Get a free, full-featured license of the Gurobi Optimizer to experience the performance, support, benchmarking and tuning services we provide as part of our product offering.
Academic License
Gurobi supports the teaching and use of optimization within academic institutions. We offer free, full-featured copies of Gurobi for use in class, and for research.
Cloud Trial

Request free trial hours, so you can see how quickly and easily a model can be solved on the cloud.