mirrors/limbo
1
0
Fork 0
mirror of https://github.com/tursodatabase/limbo.git synced 2025-12-23 08:21:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

Add integration test to ensure covering expr index is used

Browse source
This commit is contained in:
PThorpe92 2025-11-20 12:46:26 -05:00
parent 94a0f7f17a
commit 9223dfdbff
No known key found for this signature in database
GPG key ID: 04207EC75923D3E6
1 changed files with 25 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

25
tests/integration/query_processing/test_expr_index.rs
View file

@ -74,3 +74,28 @@ fn expression_index_used_for_order_by() -> anyhow::Result<()> {
assert_eq!(rows, vec![vec![0.into(), 5.into()]]);
Ok(())
}
#[test]
fn expression_index_covering_scan() -> anyhow::Result<()> {
let _ = env_logger::try_init();
let tmp_db = TempDatabase::new_with_rusqlite("CREATE TABLE t (a INT, b INT);");
let conn = tmp_db.connect_limbo();
conn.execute("INSERT INTO t VALUES (1, 2)")?;
conn.execute("INSERT INTO t VALUES (3, 4)")?;
conn.execute("INSERT INTO t VALUES (5, 6)")?;
conn.execute("CREATE INDEX idx_expr_proj ON t(a + b)")?;
let plans = explain_plans(&conn, "SELECT a + b FROM t")?;
assert!(
plans
.iter()
.any(|p| p.contains("USING COVERING INDEX idx_expr_proj")),
"expected covering index usage, got {plans:?}"
);
let rows = limbo_exec_rows(&tmp_db, &conn, "SELECT a + b FROM t ORDER BY a + b");
assert_eq!(rows, vec![vec![3.into()], vec![7.into()], vec![11.into()]]);
Ok(())
}