for k := range checkConstraints {
			if checkConstraints[k].Field == field {
				v := checkConstraints[k]
				return &v, stmt.Table
			}
		}

		for k := range uniqueConstraints {
			if uniqueConstraints[k].Field == field {
				v := uniqueConstraints[k]
				return &v, stmt.Table
			}
		}

		for _, rel := range stmt.Schema.Relationships.Relations {

				checks[name] = CheckConstraint{Name: name, Constraint: chk, Field: field}
			}
		}
	}
	return checks
}

type UniqueConstraint struct {
	Name  string
	Field *Field
}

func (uni *UniqueConstraint) GetName() string { return uni.Name }

func (uni *UniqueConstraint) Build() (sql string, vars []interface{}) {