现已上线！2025 年 Telegram 研究 — 年度关键洞察 
Data Science
前往频道在 Telegram
Learn how to analyze data effectively and manage databases with ease. Buy ads: https://telega.io/c/sql_databases
显示更多📈 Telegram 频道 Data Science 的分析概览
频道 Data Science (@sql_databases) 英语 语言赛道中的 是活跃参与者。目前社区聚集了 71 067 名订阅者，在 教育 类别中位列第 2 281，并在 印度 地区排名第 4 735 位。
📊 受众指标与增长动态
自 невідомо 创建以来，项目保持高速增长，吸引了 71 067 名订阅者。
根据 06 六月, 2026 的最新数据，频道保持稳定运转。过去 30 天订阅人数变化为 -16，过去 24 小时变化为 26，整体触达仍然可观。
- 认证状态： 未认证
- 互动率 (ER)： 平均受众互动率为 11.78%。内容发布后 24 小时内通常能获得 2.97% 的反应，占订阅者总量。
- 帖子覆盖： 每篇帖子平均可获得 8 369 次浏览，首日通常累积 2 110 次浏览。
- 互动与反馈： 受众积极参与，单帖平均反应数为 0。
- 主题关注点： 内容集中在 database, learning, linkedin, udemy, 029k| 等核心主题上。
📝 描述与内容策略
作者将该频道定位为表达主观观点的平台：
“Learn how to analyze data effectively and manage databases with ease.
Buy ads: https://telega.io/c/sql_databases”
凭借高频更新（最新数据采集于 08 六月, 2026），频道始终保持新鲜度与高覆盖。分析显示受众积极互动，使其成为 教育 类别中的关键影响点。
71 067
订阅者
+2624 小时
+477 天
-1630 天
帖子存档
71 064
Repost from Linkedin Learning
Welcome to our Development Pack! 🚀
If you're interested in web development, mobile development, machine learning, or even ChatGPT, you're in the right place.
You'll find channels for everything, starting with the famous Python 🐍 and JavaScript, and finishing with React, Next.js, AutoCAD, and SolidWorks. We also cover databases, Linux 🐧, ethical hacking, cybersecurity, finance and marketing, crypto tutorials, and many more. 🌟
📱 Development Pack
71 064
🔅 Introduction to Spark SQL and DataFrames
🌐 Author: Dan Sullivan
🔰 Level: Intermediate
⏰ Duration: 1h 54m
🌀 Learn about DataFrames, a widely used data structure in Apache Spark. Discover how to manipulate and analyze distributed data with the DataFrames API and SQL.📗 Topics: Apache Spark, SQL 📤 Join SQL Database Mastery for more courses
71 064
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71 064
🚀 Popular SQL Challenges You Should Know!
1. How to Find the Second Highest Value in a Column Need to find the second highest salary? Use a combination of ORDER BY and LIMIT to get it easily:
SELECT MAX(salary) AS second_highest_salary
FROM employees
WHERE salary < (SELECT MAX(salary) FROM employees);
2. How to Find the N-th Highest Salary in a Table Want to find the N-th highest salary? Just order the salaries in descending order and use LIMIT to pick the exact one you need. For example, to find the 3rd highest salary:
SELECT salary
FROM employees
ORDER BY salary DESC
LIMIT 2,1;
📚 More SQL challenges and solutions available here: https://t.me/sql_and_dbt 🚀71 064
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