SQLite transactions and virtual tables
Published on: 2025-04-22 02:28:31
In my previous post I introduced SQL virtual tables and how to use them in Go—registering modules per connection, defining schemas, and querying external sources as regular tables.
Now let’s dive into more advanced virtual-table implementations: those that support writes and full transactional behavior.
Writes and Transaction Support in Virtual Tables
SQLite’s virtual-table interface isn’t read-only. By implementing xUpdate you can expose writable tables over any data source. But true transactional integrity requires more than just row-level updates—it requires hooks for transaction boundaries:
xBegin : Signal the start of a transaction.
: Signal the start of a transaction. xSync : Prepare work for a durable commit; failures here abort everything.
: Prepare work for a durable commit; failures here abort everything. xCommit : Finalize the transaction (cleanup only).
: Finalize the transaction (cleanup only). xRollback : Revert changes if the transaction is aborted.
But what happ
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