WriteCounts
Insert/reattach/skip counts for an append-only table (completions or sessions) within one book.
insertedinteger<int32>required
Possible values: >= 0
reattachedinteger<int32>required
Adopted an orphaned row (book_id IS NULL) rather than inserting a
new one.
Possible values: >= 0
skippedinteger<int32>required
Already present with the same book attached; re-importing is a no-op.
Possible values: >= 0
WriteCounts
{
"inserted": 0,
"reattached": 0,
"skipped": 0
}