fix: correct wrong test

[jackwener]

Which issue does this PR close?

related #6447

Rationale for this change

related PR #6010

What changes are included in this PR?

This test use wrong select(), so bug is hidden.
correct this test and ignore this PR temporarily

error log

Error: SchemaError(FieldNotFound { field: Column { relation: None, name: "COUNT(*)" }, valid_fields: [Column { relation: None, name: "COUNT(UInt8(1))" }, Column { relation: Some(Bare { table: "t2" }), name: "a" }, Column { relation: Some(Bare { table: "t2" }), name: "b" }, Column { relation: Some(Bare { table: "t2" }), name: "c" }] })

update:

use count(Wildcard).to_string() to resolve problem.

Are these changes tested?

Are there any user-facing changes?

[jackwener]

This bug is a little difficult, I am trying to repair.

I create PR to fix the problematic tests in advance now.

[alamb]

Since this is a dataframe test, maybe could use the expr name directly rather than the hard coded string 🤔

Something like

               let count_star = count(lit(COUNT_STAR_EXPANSION));
                ctx.table("t2")
                    .await?
                    .filter(out_ref_col(DataType::UInt32, "t1.a").eq(col("t2.a")))?
                    .aggregate(vec![], vec![count_star.clone()])?
                    .select(vec![col(count_star.to_string())])?

[jackwener]

A great idea!

[alamb]

👍