pub fn write_backup<S>(
storage: &S,
plan: &MigrationPlan,
dir: &Path,
) -> Result<usize, MigrationError>where
S: StorageReader + ?Sized,Expand description
Snapshot rows touched by destructive steps. Returns the row count.
pub fn write_backup<S>(
storage: &S,
plan: &MigrationPlan,
dir: &Path,
) -> Result<usize, MigrationError>where
S: StorageReader + ?Sized,Snapshot rows touched by destructive steps. Returns the row count.