After upgrading to SQLDelight 1.4.0 last_insert_rowid() stopped working on iOS.

Runtime Environment SQLDelight version: 1.4.0 Application OS: iOS 13.5.1 Kotlin version 1.3.72

Describe the bug

I use following table

CREATE TABLE IF NOT EXISTS connection (
id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
start INTEGER,
end INTEGER,
has_error INTEGER AS Boolean DEFAULT 0,
error INTEGER AS Int DEFAULT -1,
message TEXT);

I insert rows like this

insertConnection:
INSERT INTO connection(start, end, has_error, error, message) VALUES (?, ?, ?, ?, ?);

With SQLDelight 1.3.0 I could query the last row like this:

getLastInsertedConnectionId:
SELECT last_insert_rowid();

Since SQLDelight 1.4.0 the query always returns 0. If I use the query on Android it still works. So I guess the issue is in “com.squareup.sqldelight:native-driver:1.4.0”

[rnstewart]

Aha! transactionWithResult was the missing piece of the puzzle.

Thank you, @benasher44!

[benasher44]

last_insert_rowid() only works on the connection where the write happened. There was a previous bug (in the native driver) where writes that weren’t explicitly inside of a transaction would be run on the connection used for queries, but writes wrapped in an explicit transaction would be run on the connection used for writes (all writes should go to the same connection). In practice, this can cause spurious SQLITE_LOCKED-type errors that are hard to diagnose. This was fixed in 1.4.0, but as a result it means that if you want your last_insert_rowid() query to work properly, you will need to wrap it inside of a transaction to force it onto the writer connection.