There are times when some arbitrary string or bit of code needs to be different for separate build configurations.

For example, in a project that contains numerous cross-database queries, one might need to specify the database based on which build configuration was selected.

This could be handled by providing a way to define variables (or parameters if you prefer that term) that could be placed in the table, stored procedure, etc. scripts. The variables would be replaced by values specified for each build configuration when generating the deployment (or schema change) script.