pkg database/sql/driver, type RowsColumnTypeNullable interface { Close, ColumnTypeNullable, Columns, Next }
pkg database/sql/driver, type RowsColumnTypeNullable interface, Close() error
pkg database/sql/driver, type RowsColumnTypeNullable interface, Columns() []string
pkg database/sql/driver, type RowsColumnTypeNullable interface, ColumnTypeNullable(int) (bool, bool)

// be true if it is known the column may be null, or false if the column is known
// to be not nullable.
// If the column nullability is unknown, ok should be false.
type RowsColumnTypeNullable interface {
	Rows
	ColumnTypeNullable(index int) (nullable, ok bool)
}

// RowsColumnTypePrecisionScale may be implemented by [Rows]. It should return
// the precision and scale for decimal types. If not applicable, ok should be false.

		if prop, ok := rowsi.(driver.RowsColumnTypeLength); ok {
			ci.length, ci.hasLength = prop.ColumnTypeLength(i)
		}
		if prop, ok := rowsi.(driver.RowsColumnTypeNullable); ok {
			ci.nullable, ci.hasNullable = prop.ColumnTypeNullable(i)
		}
		if prop, ok := rowsi.(driver.RowsColumnTypePrecisionScale); ok {
			ci.precision, ci.scale, ci.hasPrecisionScale = prop.ColumnTypePrecisionScale(i)
		}
	}
	return list
}