This repository was archived by the owner on May 7, 2026. It is now read-only.
fix: handle unsupported types and empty results in describe#2506
Merged
Conversation
product-auto-label
Bot
added
the
api: bigquery
shuoweil
requested review from
TrevorBergeron and
chelsea-lin
and removed request for
tswast
chelsea-lin
suggested changes
Mar 12, 2026
|
|
||
| def test_describe_empty_dataframe_returns_empty_dataframe(session): | ||
| df = session.read_gbq("SELECT 1 AS int_col LIMIT 0") | ||
| df = df.drop(columns=["int_col"]) |
Contributor
There was a problem hiding this comment.
nit: Can we do df = bpd.DataFrame() for an empty DataFrame?
Contributor
Author
There was a problem hiding this comment.
Thanks for the suggestion, the testcase has been updated.
chelsea-lin
approved these changes
Mar 12, 2026
tswast
added a commit
that referenced
this pull request
Mar 16, 2026
PR created by the Librarian CLI to initialize a release. Merging this PR will auto trigger a release. Librarian Version: v0.8.3 Language Image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:160860d189ff1c2f7515638478823712fa5b243e27ccc33a2728669fa1e2ed0c <details><summary>bigframes: v2.38.0</summary> ## [v2.38.0](v2.37.0...v2.38.0) (2026-03-16) ### Features * Add `bigframes.bigquery.rand()` function (#2501) ([5c43efb](5c43efb7)) * add `df.bigquery` pandas accessor (#2513) ([91b6c24](91b6c245)) * Add str, dt accessors to pd.col Expression objects (#2488) ([ce5de57](ce5de570)) * add bigquery.ml.get_insights function (#2493) ([d29a609](d29a6095)) * use EUC for AI IF, CLASSIFY, and SCORE when connection is not provided (#2507) ([fe94910](fe94910a)) ### Bug Fixes * handle unsupported types and empty results in describe (#2506) ([2326ad6](2326ad6a)) * no longer automatically use anywidget in the `%%bqsql` magics (#2504) ([43353e2](43353e2b)) ### Documentation * Fix typo in ExperimentOptions class docstring (#2498) ([077cb2e](077cb2eb)) * add notebooks to user guide page (#2505) ([5cf3788](5cf37888)) </details>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to subscribe to this conversation on GitHub.
Already have an account?
Sign in.
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The .describe() method attempts to compute metrics like mean, max, and unique on all columns. For MM complex types (structs representing images/videos), running COUNT(DISTINCT column) or mathematical aggregates is physically prohibited by BigQuery and raises syntax/type validation errors.
We limit aggregations on OBJ_REF_DTYPE and JSON columns to only a basic .count(), skipping unhashable/unsupported summary metrics.
Fixes #<452681068> 🦕