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Data Analytics Projects - SQL, Excel, Tableau, Python & Power BI Interview Resources

Data Analytics Projects - SQL, Excel, Tableau, Python & Power BI Interview Resources

Kanalga Telegramโ€™da oโ€˜tish

Covering all technical and popular stuff about anything related to Data Science: AI, Big Data, Machine Learning, Statistics, general Math and the applications of former. Ads/ Promo: @love_data

Ko'proq ko'rsatish

๐Ÿ“ˆ Telegram kanali Data Analytics Projects - SQL, Excel, Tableau, Python & Power BI Interview Resources analitikasi

Data Analytics Projects - SQL, Excel, Tableau, Python & Power BI Interview Resources (@sqlproject) Ingliz til segmentidagi kanali faol ishtirokchi. Hozirda hamjamiyat 39 494 obunachidan iborat bo'lib, Taสผlim toifasida 4 752-o'rinni va Hindiston mintaqasida 10 399-o'rinni egallagan.

๐Ÿ“Š Auditoriya koโ€˜rsatkichlari va dinamika

ะฝะตะฒั–ะดะพะผะพ sanasidan buyon loyiha tez oโ€˜sib, 39 494 obunachiga ega boโ€˜ldi.

10 Iyun, 2026 dagi oxirgi maโ€™lumotlarga koโ€˜ra kanal barqaror faollikka ega. Oxirgi 30 kunda obunachilar soni 198 ga, soโ€˜nggi 24 soatda esa 3 ga oโ€˜zgardi va umumiy qamrov yuqori darajada qolmoqda.

  • Tasdiqlash holati: Tasdiqlanmagan
  • Jalb etish (ER): Auditoriya oโ€˜rtacha 2.80% darajada jalb etiladi. Nashrdan keyingi dastlabki 24 soatda kontent odatda umumiy obunachilar sonining 1.00% ini tashkil etuvchi reaksiyalarni toโ€˜playdi.
  • Post qamrovi: Har bir post oโ€˜rtacha 1 107 marta koโ€˜riladi; birinchi sutkada odatda 393 ta koโ€˜rish yigโ€˜iladi.
  • Reaksiyalar va oโ€˜zaro taโ€™sir: Auditoriya faol: har bir postga oโ€˜rtacha 3 ta reaksiya keladi.
  • Tematik yoโ€˜nalishlar: Kontent analytic, dataset, visualization, sql, learning kabi asosiy mavzularga jamlangan.

๐Ÿ“ Tavsif va kontent siyosati

Muallif resursni shaxsiy fikrni ifoda etish maydoni sifatida taโ€™riflaydi:
โ€œCovering all technical and popular stuff about anything related to Data Science: AI, Big Data, Machine Learning, Statistics, general Math and the applications of former. Ads/ Promo: @love_dataโ€

Yuqori yangilanish chastotasi (oxirgi maโ€™lumot 11 Iyun, 2026 da olingan) sababli kanal doimo dolzarb va katta qamrovli boโ€˜lib qoladi. Analitika auditoriya kontent bilan faol hamkorlik qilishini, uni Taสผlim toifasidagi muhim taโ€™sir nuqtasiga aylantirishini koโ€˜rsatadi.

39 494
Obunachilar
+324 soatlar
+377 kunlar
+19830 kunlar
Postlar arxiv
SQL isn't easy! Itโ€™s the powerful language that helps you manage and manipulate data in databases. To truly master SQL, focus on these key areas: 0. Understanding the Basics: Get comfortable with SQL syntax, data types, and basic queries like SELECT, INSERT, UPDATE, and DELETE. 1. Mastering Data Retrieval: Learn advanced SELECT statements, including JOINs, GROUP BY, HAVING, and subqueries to retrieve complex datasets. 2. Working with Aggregation Functions: Use functions like COUNT(), SUM(), AVG(), MIN(), and MAX() to summarize and analyze data efficiently. 3. Optimizing Queries: Understand how to write efficient queries and use techniques like indexing and query execution plans for performance optimization. 4. Creating and Managing Databases: Master CREATE, ALTER, and DROP commands for building and maintaining database structures. 5. Understanding Constraints and Keys: Learn the importance of primary keys, foreign keys, unique constraints, and indexes for data integrity. 6. Advanced SQL Techniques: Dive into CASE statements, CTEs (Common Table Expressions), window functions, and stored procedures for more powerful querying. 7. Normalizing Data: Understand database normalization principles and how to design databases to avoid redundancy and ensure consistency. 8. Handling Transactions: Learn how to use BEGIN, COMMIT, and ROLLBACK to manage transactions and ensure data integrity. 9. Staying Updated with SQL Trends: The world of databases evolvesโ€”stay informed about new SQL functions, database management systems (DBMS), and best practices. โณ With practice, hands-on experience, and a thirst for learning, SQL will empower you to unlock the full potential of data! You can read detailed article here I've curated essential SQL Interview Resources๐Ÿ‘‡ https://t.me/DataSimplifier Share with credits: https://t.me/sqlspecialist Hope it helps :)

๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—™๐—ฅ๐—˜๐—˜ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐—ช๐—ฒ๐—ฏ๐—ถ๐—ป๐—ฎ๐—ฟ | ๐—ฅ๐—ฒ๐—ด๐—ถ๐˜€๐˜๐—ฒ๐—ฟ ๐—™๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜๐Ÿ˜ A Guide to a Career in Data
๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—™๐—ฅ๐—˜๐—˜ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐—ช๐—ฒ๐—ฏ๐—ถ๐—ป๐—ฎ๐—ฟ | ๐—ฅ๐—ฒ๐—ด๐—ถ๐˜€๐˜๐—ฒ๐—ฟ ๐—™๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜๐Ÿ˜  A Guide to a Career in Data Science : Tools, Skills, and Career Fundamentals - Learn how How MAANG Companies Use Data Science in Their Daily Business - Get a step-by-step guide on how to start building the expertise companies are hiring for. Eligibility :- Students,Freshers & Woking Professionals  ๐‘๐ž๐ ๐ข๐ฌ๐ญ๐ž๐ซ ๐…๐จ๐ซ ๐…๐‘๐„๐„ ๐Ÿ‘‡:- https://pdlink.in/3TwjLjZ (Limited Slots ..HurryUp๐Ÿƒโ€โ™‚๏ธ )  ๐ƒ๐š๐ญ๐ž & ๐“๐ข๐ฆ๐ž:-  July 11, 2025 , at 7 PM

๐Ÿ”ข PostgresSQL CRUD tutorial
+7
๐Ÿ”ข PostgresSQL CRUD tutorial

๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—œ๐—ป-๐——๐—ฒ๐—บ๐—ฎ๐—ป๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ โ€” ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ โ€” ๐——๐—ถ๐—ฟ๐—ฒ๐—ฐ๐˜๐—น๐˜† ๐—ณ๐—ฟ๐—ผ๐—บ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ?๏ฟฝ
๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—œ๐—ป-๐——๐—ฒ๐—บ๐—ฎ๐—ป๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ โ€” ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ โ€” ๐——๐—ถ๐—ฟ๐—ฒ๐—ฐ๐˜๐—น๐˜† ๐—ณ๐—ฟ๐—ผ๐—บ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ?๐Ÿ˜ Whether youโ€™re a student, job seeker, or just hungry to upskill โ€” these 5 beginner-friendly courses are your golden ticket๐ŸŽŸ๏ธ No fluff. No fees. Just career-boosting knowledge and certificates that make your resume popโœจ๏ธ ๐‹๐ข๐ง๐ค๐Ÿ‘‡:- https://pdlink.in/42vL6br Enjoy Learning โœ…๏ธ

๐Ÿ” Real-World Data Analyst Tasks & How to Solve Them As a Data Analyst, your job isnโ€™t just about writing SQL queries or making dashboardsโ€”itโ€™s about solving business problems using data. Letโ€™s explore some common real-world tasks and how you can handle them like a pro! ๐Ÿ“Œ Task 1: Cleaning Messy Data Before analyzing data, you need to remove duplicates, handle missing values, and standardize formats. โœ… Solution (Using Pandas in Python):
import pandas as pd  
df = pd.read_csv('sales_data.csv')  
df.drop_duplicates(inplace=True)  # Remove duplicate rows  
df.fillna(0, inplace=True)  # Fill missing values with 0  
print(df.head())
๐Ÿ’ก Tip: Always check for inconsistent spellings and incorrect date formats! ๐Ÿ“Œ Task 2: Analyzing Sales Trends A company wants to know which months have the highest sales. โœ… Solution (Using SQL):
SELECT MONTH(SaleDate) AS Month, SUM(Quantity * Price) AS Total_Revenue  
FROM Sales  
GROUP BY MONTH(SaleDate)  
ORDER BY Total_Revenue DESC;
๐Ÿ’ก Tip: Try adding YEAR(SaleDate) to compare yearly trends! ๐Ÿ“Œ Task 3: Creating a Business Dashboard Your manager asks you to create a dashboard showing revenue by region, top-selling products, and monthly growth. โœ… Solution (Using Power BI / Tableau): ๐Ÿ‘‰ Add KPI Cards to show total sales & profit ๐Ÿ‘‰ Use a Line Chart for monthly trends ๐Ÿ‘‰ Create a Bar Chart for top-selling products ๐Ÿ‘‰ Use Filters/Slicers for better interactivity ๐Ÿ’ก Tip: Keep your dashboards clean, interactive, and easy to interpret! Like this post for more content like this โ™ฅ๏ธ Share with credits: https://t.me/sqlspecialist Hope it helps :)

๐ŸŽ“ ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ & ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ - ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐Ÿ˜ Unlock the p
๐ŸŽ“ ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ & ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ - ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐Ÿ˜ Unlock the power of data and launch your tech career with this FREE industry-relevant certification! ๐Ÿ“˜ What Youโ€™ll Learn: - Introduction to Data Science & Analytics - Database Management Essentials - Big Data Applications in Real World - Data Science for Absolute Beginners - Evolution & Impact of Big Data Analytics ๐‹๐ข๐ง๐ค ๐Ÿ‘‡:-  https://pdlink.in/4l3nFx0 ๐Ÿš€ Start Learning Now โ€“ 100% Free! ๐Ÿ“œ Get Certified & Boost Your Career!

๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—œ๐—ป-๐——๐—ฒ๐—บ๐—ฎ๐—ป๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ โ€” ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ โ€” ๐——๐—ถ๐—ฟ๐—ฒ๐—ฐ๐˜๐—น๐˜† ๐—ณ๐—ฟ๐—ผ๐—บ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ?๏ฟฝ
๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—œ๐—ป-๐——๐—ฒ๐—บ๐—ฎ๐—ป๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ โ€” ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ โ€” ๐——๐—ถ๐—ฟ๐—ฒ๐—ฐ๐˜๐—น๐˜† ๐—ณ๐—ฟ๐—ผ๐—บ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ?๐Ÿ˜ Whether youโ€™re a student, job seeker, or just hungry to upskill โ€” these 5 beginner-friendly courses are your golden ticket๐ŸŽŸ๏ธ No fluff. No fees. Just career-boosting knowledge and certificates that make your resume popโœจ๏ธ ๐‹๐ข๐ง๐ค๐Ÿ‘‡:- https://pdlink.in/42vL6br Enjoy Learning โœ…๏ธ

Complete Data Analyst Interview Guide (0โ€“2 Years of Experience) ๐Ÿ”น Round 1: SQL + Scenario-Based Questions Q1. Get top 3 products by revenue within each category SELECT * FROM ( SELECT p.product_id, p.category, SUM(o.revenue) AS total_revenue, RANK() OVER(PARTITION BY p.category ORDER BY SUM(o.revenue) DESC) AS rnk FROM products p JOIN orders o ON p.product_id = o.product_id GROUP BY p.product_id, p.category ) ranked WHERE rnk <= 3; Q2. Find users who purchased in January but not in February SELECT DISTINCT user_id FROM orders WHERE MONTH(order_date) = 1 AND user_id NOT IN ( SELECT user_id FROM orders WHERE MONTH(order_date) = 2 ); Q3. Avg. ride time by city + peak hours SELECT city, AVG(DATEDIFF(MINUTE, start_time, end_time)) AS avg_ride_mins FROM trips GROUP BY city; -- For peak hour detection (example logic) SELECT DATEPART(HOUR, start_time) AS ride_hour, COUNT(*) AS ride_count FROM trips GROUP BY DATEPART(HOUR, start_time) ORDER BY ride_count DESC; โธป ๐Ÿ”น Round 2: Python + Data Cleaning Q1. Clean messy CSV with pandas import pandas as pd df = pd.read_csv('data.csv') df.columns = df.columns.str.strip().str.lower() df.drop_duplicates(inplace=True) df['date'] = pd.to_datetime(df['date'], errors='coerce') df.fillna(method='ffill', inplace=True) Q2. Extract domain names from email IDs emails = ['abc@gmail.com', 'xyz@outlook.com'] domains = [email.split('@')[1] for email in emails] Q3. Difference: .loc[] vs .iloc[] โ€ข .loc[] โ†’ label-based selection โ€ข .iloc[] โ†’ index-based selection Q4. Handle outliers using IQR Q1 = df['column'].quantile(0.25) Q3 = df['column'].quantile(0.75) IQR = Q3 - Q1 filtered_df = df[(df['column'] >= Q1 - 1.5*IQR) & (df['column'] <= Q3 + 1.5*IQR)] โธป ๐Ÿ”น Round 3: Power BI / Dashboarding Tasks you should know: โ€ข Create a dashboard with weekly trends, margins, churn % โ€ข Use bookmarks/slicers for KPI toggles โ€ข Apply filters to show top 5 items dynamically โ€ข Exclude visuals from slicer using โ€œEdit Interactionsโ€ โ†’ turn off filter icon on card visual ๐Ÿ”— Try replicating dashboards from Power BI Gallery โธป ๐Ÿ”น Round 4: Business Case + Logic-Based Thinking Q1. Sales dropped last quarter โ€” what to check? โ€ข Compare YoY/QoQ data โ€ข Identify categories/geos with the biggest drop โ€ข Analyze order volume vs. avg. order value โ€ข Check marketing spend, discounts, stockouts Q2. App downloads โฌ†๏ธ, activity โฌ‡๏ธ โ€” whatโ€™s wrong? โ€ข Check Day 1/7/30 retention โ€ข Is onboarding working? โ€ข UI bugs or crashes? โ€ข Compare install โ†’ sign-up โ†’ usage funnel Q3. Returns increasing โ€” how to investigate? โ€ข Analyze return % by brand, category, SKU โ€ข Check return reasons (defects, sizing, etc.) โ€ข Compare returnersโ€™ order history โ€ข Seasonal impact? โธป ๐Ÿ”ฐ Free Practice Tools: โ€ข ๐Ÿ”น SQL on LeetCode โ€ข ๐Ÿ”น Python on Hackerrank โ€ข ๐Ÿ”น Power BI Gallery

๐Ÿฏ๐Ÿฌ+ ๐—™๐—ฅ๐—˜๐—˜ ๐—š๐—ฒ๐—ป๐—ฒ๐—ฟ๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ๐—”๐—œ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜ India's Biggest AI Challenge (13th To 15t
๐Ÿฏ๐Ÿฌ+ ๐—™๐—ฅ๐—˜๐—˜ ๐—š๐—ฒ๐—ป๐—ฒ๐—ฟ๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ๐—”๐—œ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜ India's Biggest AI Challenge (13th To 15th July ) , Earn Free certificates & Boost your resume! ๐—ฅ๐—ฒ๐—ด๐—ถ๐˜€๐˜๐—ฒ๐—ฟ ๐—™๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜๐Ÿ‘‡:-  https://pdlink.in/3Gx7lW7 Enroll For FREE & Become an AI Champion๐Ÿ†

SQL Joins โ€“ Essential Concepts ๐Ÿš€ 1๏ธโƒฃ What Are SQL Joins? SQL Joins are used to combine rows from two or more tables based on a related column. 2๏ธโƒฃ Types of Joins INNER JOIN: Returns only matching rows from both tables. SELECT * FROM TableA INNER JOIN TableB ON TableA.id = TableB.id; LEFT JOIN (LEFT OUTER JOIN): Returns all rows from the left table and matching rows from the right table. SELECT * FROM TableA LEFT JOIN TableB ON TableA.id = TableB.id; RIGHT JOIN (RIGHT OUTER JOIN): Returns all rows from the right table and matching rows from the left table. SELECT * FROM TableA RIGHT JOIN TableB ON TableA.id = TableB.id; FULL JOIN (FULL OUTER JOIN): Returns all rows when there is a match in either table. SELECT * FROM TableA FULL JOIN TableB ON TableA.id = TableB.id; 3๏ธโƒฃ Self Join A table joins with itself to compare rows. SELECT A.name, B.name FROM Employees A JOIN Employees B ON A.manager_id = B.id; 4๏ธโƒฃ Cross Join Returns the Cartesian product of both tables (every row from Table A pairs with every row from Table B). SELECT * FROM TableA CROSS JOIN TableB; 5๏ธโƒฃ Joins with Multiple Conditions Using multiple columns for matching. SELECT * FROM TableA INNER JOIN TableB ON TableA.id = TableB.id AND TableA.type = TableB.type; 6๏ธโƒฃ Using Aliases in Joins Shortens table names for better readability. SELECT A.name, B.salary FROM Employees A INNER JOIN Salaries B ON A.id = B.emp_id; 7๏ธโƒฃ Handling NULLs in Joins Use COALESCE(column, default_value) to replace NULL values. IS NULL to filter unmatched rows in LEFT or RIGHT JOINs. Free SQL Resources: https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v React with โค๏ธ for free resources Share with credits: https://t.me/sqlspecialist Hope it helps :)

๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—•๐—ฒ๐—ฐ๐—ผ๐—บ๐—ฒ ๐—ฎ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜€๐˜ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ? ๐—›๐—ฒ๐—ฟ๐—ฒ'๐˜€ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐Ÿญ๐Ÿฌ๐Ÿฌ% ๐—™๐—ฅ๐—˜๐—˜ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป๐—ถ๐—ป๐—ด ๏ฟฝ
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