I've been meaning to try out this IdType trait pattern. My SQLx usage so far somewhat benefits from different structs for to-write-data and read-data so I haven't quite gotten around to testing it out.
via
Pleased again with SQLx tests while adding tests against Postgres to test migrations. Previously there wasn't any automated tests for "what does this lib pull from Postgres", I was doing that manually.
#[sqlx::test]
fn test_drop_foreign_key_constraint(pool: PgPool) {
crate::migrate_from_string(
r#"
CREATE TABLE items (id uuid NOT NULL, PRIMARY KEY(id));
CREATE TABLE test (id uuid, CONSTRAINT fk_id FOREIGN KEY(id) REFERENCES items(id))"#,
&pool,
)
.await
.expect("Setup");
let m = crate::generate_migrations_from_string(
r#"
CREATE TABLE items (id uuid NOT NULL, PRIMARY KEY(id));
CREATE TABLE test (id uuid)"#,
&pool,
)
.await
.expect("Migrate");
let alter = vec![r#"ALTER TABLE test DROP CONSTRAINT fk_id CASCADE"#];
assert_eq!(m, alter);
Really impressed with SQLx testing. Super simple to create tests that use the DB in a way that works well in dev and CI environments. I'm not using the migration feature but instead have my own setup to get the DB into the right state at the beginning of tests.
Making a pr to SQLx to add Postgres lquery arrays. This took less time than I expected to try and fix. More time was spent wrangling my various projects to use a local sqlx dependency.
Postgres ltree has a wonderful ? operator that will check an array of lquerys. I plan to use this to allow filtering multiple labels in my expense tracker.
ltree ? lquery[] → boolean
lquery[] ? ltree → boolean
Does ltree match any lquery in array?
I love sqlx and type checked queries but always found it annoying to duplicate a bunch of queries vs using the dynamic query builder (which isn't type checked). Using Option and NULLs seems to improve things though!
// Postgres version
let ids = sqlx::query_as!(
Uuid,
"SELECT id FROM users \
WHERE ($1::timestamptz IS NULL OR updated_at < $1) \
AND ($2::timestamptz IS NULL OR updated_at > $2) \
AND ($3::boolean IS NULL OR is_guest = $3)",
updated_before_option,
updated_after_option,
is_guest_option,
)
.fetch_all(&pool)
.await;