comphead commented on code in PR #2849:
URL: https://github.com/apache/arrow-datafusion/pull/2849#discussion_r916327342
##########
datafusion/core/src/dataframe.rs:
##########
@@ -1007,4 +1047,36 @@ mod tests {
.await?;
Ok(())
}
+
+ #[tokio::test]
+ async fn with_column() -> Result<()> {
+ let df = test_table().await?.select_columns(&["c1", "c2", "c3"])?;
+ let ctx = SessionContext::new();
+ let df_impl = Arc::new(DataFrame::new(ctx.state.clone(),
&df.plan.clone()));
+
+ // check that we correctly read from the table
+ let df_results = &df_impl
+ .filter(col("c2").eq(lit(3)).and(col("c1").eq(lit("a"))))?
+ .with_column("sum", col("c2") + col("c3"))?
Review Comment:
@loic-sharma @andygrove
Added `overwrite` and `overwrite referencing to self` tests
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