mingmwang commented on code in PR #6457:
URL: https://github.com/apache/arrow-datafusion/pull/6457#discussion_r1227884200
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datafusion/core/tests/sql/subqueries.rs:
##########
@@ -606,25 +761,115 @@ async fn support_order_by_correlated_columns() ->
Result<()> {
Ok(())
}
-// TODO: issue https://github.com/apache/arrow-datafusion/issues/6263
-#[ignore]
#[tokio::test]
-async fn support_limit_subquery() -> Result<()> {
+async fn exists_subquery_with_select_null() -> Result<()> {
let ctx = create_join_context("t1_id", "t2_id", true)?;
- let sql = "SELECT t1_id, t1_name FROM t1 WHERE EXISTS (SELECT * FROM t2
WHERE t2_id = t1_id limit 1)";
+ let sql = "SELECT t1_id, t1_name FROM t1 WHERE EXISTS (SELECT NULL)";
let msg = format!("Creating logical plan for '{sql}'");
let dataframe = ctx.sql(sql).await.expect(&msg);
let plan = dataframe.into_optimized_plan()?;
let expected = vec![
"Filter: EXISTS (<subquery>) [t1_id:UInt32;N, t1_name:Utf8;N]",
- " Subquery: [t2_id:UInt32;N, t2_name:Utf8;N, t2_int:UInt32;N]",
- " Limit: skip=0, fetch=1 [t2_id:UInt32;N, t2_name:Utf8;N,
t2_int:UInt32;N]",
- " Projection: t2.t2_id, t2.t2_name, t2.t2_int [t2_id:UInt32;N,
t2_name:Utf8;N, t2_int:UInt32;N]",
- " Filter: t2.t2_id = outer_ref(t1.t1_id) [t2_id:UInt32;N,
t2_name:Utf8;N, t2_int:UInt32;N]",
- " TableScan: t2 [t2_id:UInt32;N, t2_name:Utf8;N,
t2_int:UInt32;N]",
+ " Subquery: [NULL:Null;N]",
Review Comment:
Yes, this query can not run now. This is just to verify the logic plan
generated is expected.
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