return constraint, getTable(rel)
		}
	}

	if field := stmt.Schema.LookUpField(name); field != nil {
		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]