timsaucer commented on PR #1276:
URL:
https://github.com/apache/datafusion-python/pull/1276#issuecomment-3402794419
FWIW I did a quick test with this:
```diff
--- a/python/datafusion/dataframe.py
+++ b/python/datafusion/dataframe.py
@@ -424,7 +424,9 @@ class DataFrame:
df = df.select("a", col("b"), col("a").alias("alternate_a"))
"""
- exprs_internal = expr_list_to_raw_expr_list(exprs)
+ expr_list = [self.parse_sql_expr(e) if isinstance(e, str) else e
for e in exprs]
+
+ exprs_internal = expr_list_to_raw_expr_list(expr_list)
return DataFrame(self.df.select(*exprs_internal))
```
With that you can do `df.select("a-b")`. It feels very intuitive to me.
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