chenkovsky commented on issue #15765:
URL: https://github.com/apache/datafusion/issues/15765#issuecomment-2826836394
```rust
#[tokio::test]
async fn test_substrait_post_join_project() -> Result<()> {
let ctx = create_context().await?;
let sql = "
SELECT
data.a,
data.b,
data.c,
data2.a,
data2.b,
(data.e + data2.a) AS g
FROM data
INNER JOIN data2 ON data.a = data2.a
WHERE
data.b > 0
";
let plan = ctx.sql(sql).await?.into_optimized_plan()?;
println!("logical_plan: {}", plan);
let sub_plan = to_substrait_plan(&plan, &ctx.state())?;
println!("sub_plan: {:#?}", sub_plan);
let plan2 = from_substrait_plan(&ctx.state(), &sub_plan).await?;
println!("logical_plan2: {}", plan2);
assert_eq!(plan2, plan);
Ok(())
}
```
did I miss something? I added an UT in roundtrip_logical_plan.rs, but it
works. and what's the schema of your input parquet?
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