CB

Currently storing nulls is an all or nothing scenario. There needs to be a way to allow column by column null store. In addition to this CB fields themselves need to be able to properly store nulls. Empty string for field stores should cause them to do a null store (probably needs implemented as field by field?).

https://www.joomlapolis.com/forum/255-developer-members-support/232350-5697-cb-2012-conflict-between-value-an-validation-rule-of-an-integer-field#277442