Track is multi output #1855

MarcoGorelli · 2025-01-23T11:09:20Z

One step closer to #1780.

Next steps:

in the metadata, store a callable which determines the root names
only set aliases when necessary, as opposed to renaming after each operation. PySpark / SQL don't let us set as many aliases as we do now, e.g. 'select (a - mean(a) over () as a) as a from rel' raises

What type of PR is this? (check all applicable)

MarcoGorelli · 2025-01-23T11:12:17Z

narwhals/_expression_parsing.py

+    if isinstance(arg, str):
+        # Column name, e.g. 'a', gets treated as `nw.col('a')`,


sigh...this isn't even always true. darn. we may need to parse column names as expressions a bit earlier

MarcoGorelli added 9 commits January 22, 2025 08:44

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Merge remote-tracking branch 'upstream/main' into track-is-multi-output

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Merge remote-tracking branch 'upstream/main' into track-is-multi-output

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MarcoGorelli commented Jan 23, 2025

View reviewed changes

		if isinstance(arg, str):
		# Column name, e.g. 'a', gets treated as `nw.col('a')`,