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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

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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 39 485 obunachidan iborat bo'lib, Taสผlim toifasida 4 741-o'rinni va Hindiston mintaqasida 10 461-o'rinni egallagan.

๐Ÿ“Š Auditoriya koโ€˜rsatkichlari va dinamika

ะฝะตะฒั–ะดะพะผะพ sanasidan buyon loyiha tez oโ€˜sib, 39 485 obunachiga ega boโ€˜ldi.

06 Iyun, 2026 dagi oxirgi maโ€™lumotlarga koโ€˜ra kanal barqaror faollikka ega. Oxirgi 30 kunda obunachilar soni 225 ga, soโ€˜nggi 24 soatda esa 12 ga oโ€˜zgardi va umumiy qamrov yuqori darajada qolmoqda.

  • Tasdiqlash holati: Tasdiqlanmagan
  • Jalb etish (ER): Auditoriya oโ€˜rtacha 2.63% darajada jalb etiladi. Nashrdan keyingi dastlabki 24 soatda kontent odatda umumiy obunachilar sonining 0.95% ini tashkil etuvchi reaksiyalarni toโ€˜playdi.
  • Post qamrovi: Har bir post oโ€˜rtacha 1 037 marta koโ€˜riladi; birinchi sutkada odatda 376 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 08 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.

39 485
Obunachilar
+1224 soatlar
+537 kunlar
+22530 kunlar
Postlar arxiv
SQL Detailed Roadmap | | | |-- Fundamentals | |-- Introduction to Databases | | |-- What SQL does | | |-- Relational model | | |-- Tables, rows, columns | |-- Keys and Constraints | | |-- Primary keys | | |-- Foreign keys | | |-- Unique and check constraints | |-- Normalization | | |-- 1NF, 2NF, 3NF | | |-- ER diagrams | | |-- Core SQL | |-- SQL Basics | | |-- SELECT, WHERE, ORDER BY | | |-- GROUP BY and HAVING | | |-- JOINS: INNER, LEFT, RIGHT, FULL | |-- Intermediate SQL | | |-- Subqueries | | |-- CTEs | | |-- CASE statements | | |-- Aggregations | |-- Advanced SQL | | |-- Window functions | | |-- Analytical functions | | |-- Ranking, moving averages, lag and lead | | |-- UNION, INTERSECT, EXCEPT | | |-- Data Management | |-- Data Types | | |-- Numeric, text, date, JSON | |-- Indexes | | |-- B tree and hash indexes | | |-- When to create indexes | |-- Transactions | | |-- ACID properties | |-- Views | | |-- Standard views | | |-- Materialized views | | |-- Database Design | |-- Schema Design | | |-- Star schema | | |-- Snowflake schema | |-- Fact and Dimension Tables | |-- Constraints for clean data | | |-- Performance Tuning | |-- Query Optimization | | |-- Execution plans | | |-- Index usage | | |-- Reducing scans | |-- Partitioning | | |-- Horizontal partitioning | | |-- Sharding basics | | |-- SQL for Analytics | |-- KPI calculations | |-- Cohort analysis | |-- Funnel analysis | |-- Churn and retention tables | |-- Time based aggregations | |-- Window functions for metrics | | |-- SQL for Data Engineering | |-- ETL Workflows | | |-- Staging tables | | |-- Transformations | | |-- Incremental loads | |-- Data Warehousing | | |-- Snowflake | | |-- Redshift | | |-- BigQuery | |-- dbt Basics | | |-- Models | | |-- Tests | | |-- Lineage | | |-- Tools and Platforms | |-- PostgreSQL | |-- MySQL | |-- SQL Server | |-- Oracle | |-- SQLite | |-- Cloud SQL | |-- BigQuery UI | |-- Snowflake Worksheets | | |-- Projects | |-- Build a sales reporting system | |-- Create a star schema from raw CSV files | |-- Design a customer segmentation query | |-- Build a churn dashboard dataset | |-- Optimize slow queries in a sample DB | |-- Create an analytics pipeline with dbt | | |-- Soft Skills and Career Prep | |-- SQL interview patterns | |-- Joins practice | |-- Window function drills | |-- Query writing speed | |-- Git and GitHub | |-- Data storytelling | | |-- Bonus Topics | |-- NoSQL intro | |-- Working with JSON fields | |-- Spatial SQL | |-- Time series tables | |-- CDC concepts | |-- Real time analytics | | |-- Community and Growth | |-- LeetCode SQL | |-- Kaggle datasets with SQL | |-- GitHub projects | |-- LinkedIn posts | |-- Open source contributions Free Resources to learn SQL โ€ข W3Schools SQL https://www.w3schools.com/sql/ โ€ข SQL Programming https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v โ€ข SQL Notes https://whatsapp.com/channel/0029Vb6hJmM9hXFCWNtQX944 โ€ข Mode Analytics SQL tutorials https://mode.com/sql-tutorial/ โ€ข Data Analytics Resources https://t.me/sqlspecialist โ€ข HackerRank SQL practice https://www.hackerrank.com/domains/sql โ€ข LeetCode SQL problems https://leetcode.com/problemset/database/ โ€ข Data Engineering Resources https://whatsapp.com/channel/0029Vaovs0ZKbYMKXvKRYi3C โ€ข Khan Academy SQL basics https://www.khanacademy.org/computing/computer-programming/sql โ€ข PostgreSQL official docs https://www.postgresql.org/docs/ โ€ข MySQL official docs https://dev.mysql.com/doc/ โ€ข NoSQL Resources https://whatsapp.com/channel/0029VaxA2hTHgZWe5FpFjm3p Double Tap โค๏ธ For More

๐—”๐—œ/๐— ๐—Ÿ ๐—ฟ๐—ผ๐—น๐—ฒ๐˜€ ๐—ฎ๐—ฟ๐—ฒ ๐—ณ๐—ฎ๐˜€๐˜๐—ฒ๐˜€๐˜-๐—ด๐—ฟ๐—ผ๐˜„๐—ถ๐—ป๐—ด ๐—ฐ๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐—ณ๐—ถ๐—ฒ๐—น๐—ฑ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฒ๐Ÿ˜ The demand is real, salarie
๐—”๐—œ/๐— ๐—Ÿ ๐—ฟ๐—ผ๐—น๐—ฒ๐˜€ ๐—ฎ๐—ฟ๐—ฒ ๐—ณ๐—ฎ๐˜€๐˜๐—ฒ๐˜€๐˜-๐—ด๐—ฟ๐—ผ๐˜„๐—ถ๐—ป๐—ด ๐—ฐ๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐—ณ๐—ถ๐—ฒ๐—น๐—ฑ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฒ๐Ÿ˜ The demand is real, salaries are high, and the talent gap is wide open Enrol for AI/ML Certification Program by CCE, IIT Mandi! Eligibility: Open to everyone Duration: 6 Months Program Mode: Online Taught By: IIT Mandi Professors Deadline :- 23rd May ๐—ฅ๐—ฒ๐—ด๐—ถ๐˜€๐˜๐—ฒ๐—ฟ ๐—ก๐—ผ๐˜„๐Ÿ‘‡ :- https://pdlink.in/4nmI024 . ๐ŸŽ“Get Placement Assistance With 5000+ Companies

๐Ÿ“Š Complete SQL Syllabus Roadmap (Beginner to Expert) ๐Ÿ—„๏ธ ๐Ÿ”ฐ Beginner Level: 1. Intro to Databases: What are databases, Relational vs. Non-Relational 2. SQL Basics: SELECT, FROM, WHERE 3. Data Types: INT, VARCHAR, DATE, BOOLEAN, etc. 4. Operators: Comparison, Logical (AND, OR, NOT) 5. Sorting & Filtering: ORDER BY, LIMIT, DISTINCT 6. Aggregate Functions: COUNT, SUM, AVG, MIN, MAX 7. GROUP BY and HAVING: Grouping Data and Filtering Groups 8. Basic Projects: Creating and querying a simple database (e.g., a student database) โš™๏ธ Intermediate Level: 1. Joins: INNER, LEFT, RIGHT, FULL OUTER JOIN 2. Subqueries: Using queries within queries 3. Indexes: Improving Query Performance 4. Data Modification: INSERT, UPDATE, DELETE 5. Transactions: ACID Properties, COMMIT, ROLLBACK 6. Constraints: PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, CHECK, DEFAULT 7. Views: Creating Virtual Tables 8. Stored Procedures & Functions: Reusable SQL Code 9. Date and Time Functions: Working with Date and Time Data 10. Intermediate Projects: Designing and querying a more complex database (e.g., an e-commerce database) ๐Ÿ† Expert Level: 1. Window Functions: RANK, ROW_NUMBER, LAG, LEAD 2. Common Table Expressions (CTEs): Recursive and Non-Recursive 3. Performance Tuning: Query Optimization Techniques 4. Database Design & Normalization: Understanding Database Schemas (Star, Snowflake) 5. Advanced Indexing: Clustered, Non-Clustered, Filtered Indexes 6. Database Administration: Backup and Recovery, Security, User Management 7. Working with Large Datasets: Partitioning, Data Warehousing Concepts 8. NoSQL Databases: Introduction to MongoDB, Cassandra, etc. (optional) 9. SQL Injection Prevention: Secure Coding Practices 10. Expert Projects: Designing, optimizing, and managing a large-scale database (e.g., a social media database) ๐Ÿ’ก Bonus: Learn about Database Security, Cloud Databases (AWS RDS, Azure SQL Database, Google Cloud SQL), and Data Modeling Tools. ๐Ÿ‘ Tap โค๏ธ for more

๐Ÿ”น DATA ANALYST โ€“ INTERVIEW REVISION SHEET 1๏ธโƒฃ Role Clarity > โ€œA data analyst collects, cleans, analyzes data, and converts it into insights that help businesses make decisions.โ€ 2๏ธโƒฃ SQL (Most Important) Must-know clauses: โ€ข SELECT, WHERE, ORDER BY, LIMIT โ€ข GROUP BY, HAVING โ€ข JOINS (INNER, LEFT) โ€ข Subqueries, CTEs โ€ข Window functions (ROW_NUMBER, RANK) Golden rules: โ€ข WHERE โ†’ before aggregation โ€ข HAVING โ†’ after aggregation โ€ข LEFT JOIN โ†’ keeps all left table rows โ€ข NULLs break calculations โ†’ use COALESCE Classic questions: โ€ข Top N per group โ€ข Find duplicates โ€ข Running totals 3๏ธโƒฃ Excel Essentials Formulas: โ€ข IF, XLOOKUP โ€ข COUNTIFS, SUMIFS โ€ข TRIM, LEFT, RIGHT Core features: โ€ข Pivot tables โ€ข Conditional formatting โ€ข Data validation (dropdowns) Avoid: โ€ข Merged cells โ€ข Hard-coded values 4๏ธโƒฃ Power BI / Tableau Concepts: โ€ข Data model (star schema) โ€ข Relationships (one-to-many) โ€ข Measures > calculated columns Must-know DAX: โ€ข Total Sales = SUM(Sales[Amount]) โ€ข YTD Sales = TOTALYTD(SUM(Sales[Amount]), Sales[Date]) Design rules: โ€ข KPIs on top โ€ข One story per dashboard โ€ข Minimal visuals 5๏ธโƒฃ Statistics (Only What Matters) โ€ข Mean vs Median โ€ข Standard deviation โ€ข Correlation โ‰  causation โ€ข Outliers distort averages โ€ข Use median for Salaries, House prices 6๏ธโƒฃ Data Cleaning (Interview Gold) Steps you should say: 1. Remove duplicates 2. Handle missing values 3. Fix data types 4. Standardize text 7๏ธโƒฃ Business Metrics โ€ข Revenue โ€ข Growth rate โ€ข Conversion rate โ€ข Churn โ€ข Retention โ€ข Average order value Always connect metrics to business impact. 8๏ธโƒฃ Case Question Framework (Very Important) Always answer like this: 1. What happened 2. Why it happened 3. What should be done Example: > โ€œSales dropped due to lower traffic in one region, so Iโ€™d recommend increasing marketing spend there.โ€ 9๏ธโƒฃ Project Explanation Template > โ€œThe goal was . I used to clean data, to analyze, and to visualize. The key insight was . The business impact was .โ€ Memorize this. ๐Ÿ”Ÿ HR Power Answers Why data analyst? > โ€œI enjoy finding patterns in data and turning them into actionable insights.โ€ Strength: โ€œI combine technical skills with business understanding.โ€ Weakness: โ€œI used to over-analyze, but now I focus on impact.โ€ ๐Ÿง  Last-Day Interview Tips โ€ข Think out loud โ€ข Ask clarifying questions โ€ข Donโ€™t jump to tools immediately โ€ข Focus on impact, not syntax ๐Ÿ’ฌ Tap โค๏ธ for more!

๐Ÿš€ ๐—™๐—ฅ๐—˜๐—˜ ๐—•๐—ฒ๐—ด๐—ถ๐—ป๐—ป๐—ฒ๐—ฟ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ง๐—ผ ๐—จ๐—ฝ๐—ด๐—ฟ๐—ฎ๐—ฑ๐—ฒ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐Ÿ”ฅ Still confused where to sta
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โœ…8-Week Beginner Roadmap to Learn Data Analysis ๐Ÿ“Š ๐Ÿ—“๏ธ Week 1: Excel & Data Basics  Goal: Master data organization and analysis basics  Topics: Excel formulas, functions, PivotTables, data cleaning  Tools: Microsoft Excel, Google Sheets  Mini Project: Analyze sales or survey data with PivotTables ๐Ÿ—“๏ธ Week 2: SQL Fundamentals  Goal: Learn to query databases efficiently  Topics: SELECT, WHERE, JOIN, GROUP BY, subqueries  Tools: MySQL, PostgreSQL, SQLite  Mini Project: Query sample customer or sales database ๐Ÿ—“๏ธ Week 3: Data Visualization Basics  Goal: Create meaningful charts and graphs  Topics: Bar charts, line charts, scatter plots, dashboards  Tools: Tableau, Power BI, Excel charts  Mini Project: Build dashboard to analyze sales trends ๐Ÿ—“๏ธ Week 4: Data Cleaning & Preparation  Goal: Handle messy data for analysis  Topics: Handling missing values, duplicates, data types  Tools: Excel, Python (Pandas) basics  Mini Project: Clean and prepare real-world dataset for analysis ๐Ÿ—“๏ธ Week 5: Statistics for Data Analysis  Goal: Understand key statistical concepts  Topics: Descriptive stats, distributions, correlation, hypothesis testing  Tools: Excel, Python (SciPy, NumPy)  Mini Project: Analyze survey data & draw insights ๐Ÿ—“๏ธ Week 6: Advanced SQL & Database Concepts  Goal: Optimize queries & explore database design basics  Topics: Window functions, indexes, normalization  Tools: SQL Server, MySQL  Mini Project: Complex query for sales and customer analysis ๐Ÿ—“๏ธ Week 7: Automating Analysis with Python  Goal: Use Python for repetitive data tasks  Topics: Pandas automation, data aggregation, visualization scripting  Tools: Jupyter Notebook, Pandas, Matplotlib  Mini Project: Automate monthly sales report generation ๐Ÿ—“๏ธ Week 8: Capstone Project + Reporting  Goal: End-to-end analysis and presentation  Project Ideas: Customer segmentation, sales forecasting, churn analysis  Tools: Tableau/Power BI for visualization + Python/SQL for backend  Bonus: Present findings in a polished report or dashboard ๐Ÿ’ก Tips: โฆ  Practice querying and analysis on public datasets (Kaggle, data.gov) โฆ  Join data challenges and community projects ๐Ÿ’ฌ Tap โค๏ธ for the detailed explanation of each topic!

๐—™๐—ฅ๐—˜๐—˜ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ๐—ฐ๐—น๐—ฎ๐˜€๐˜€ ๐—ข๐—ป ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ( ๐—•๐˜‚๐˜€๐—ถ๐—ป๐—ฒ๐˜€๐˜€ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€)๐Ÿ˜ Learn
๐—™๐—ฅ๐—˜๐—˜ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ๐—ฐ๐—น๐—ฎ๐˜€๐˜€ ๐—ข๐—ป ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ( ๐—•๐˜‚๐˜€๐—ถ๐—ป๐—ฒ๐˜€๐˜€ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€)๐Ÿ˜ Learn the Latest 5 Analytics Tools in 2026 Learn Essential skills to stay competitive in the evolving job market Eligibility :- Students ,Graduates & Working Professionals  ๐—ฅ๐—ฒ๐—ด๐—ถ๐˜€๐˜๐—ฒ๐—ฟ ๐—™๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ ๐Ÿ‘‡:- https://pdlink.in/4tFlovr (Limited Slots ..HurryUp๐Ÿƒโ€โ™‚๏ธ )  ๐ƒ๐š๐ญ๐ž & ๐“๐ข๐ฆ๐ž:- 20th May 2026, at 7 PM

โœ… SQL Mistakes Beginners Should Avoid ๐Ÿง ๐Ÿ’ป 1๏ธโƒฃ Using SELECT * โ€ข Pulls unused columns โ€ข Slows queries โ€ข Breaks when schema changes โ€ข Use only required columns 2๏ธโƒฃ Ignoring NULL Values โ€ข NULL breaks calculations โ€ข COUNT(column) skips NULL โ€ข Use COALESCE or IS NULL checks 3๏ธโƒฃ Wrong JOIN Type โ€ข INNER instead of LEFT โ€ข Data silently disappears โ€ข Always ask: Do you need unmatched rows? 4๏ธโƒฃ Missing JOIN Conditions โ€ข Creates cartesian product โ€ข Rows explode โ€ข Always join on keys 5๏ธโƒฃ Filtering After JOIN Instead of Before โ€ข Processes more rows than needed โ€ข Slower performance โ€ข Filter early using WHERE or subqueries 6๏ธโƒฃ Using WHERE Instead of HAVING โ€ข WHERE filters rows โ€ข HAVING filters groups โ€ข Aggregates fail without HAVING 7๏ธโƒฃ Not Using Indexes โ€ข Full table scans โ€ข Slow dashboards โ€ข Index columns used in JOIN, WHERE, ORDER BY 8๏ธโƒฃ Relying on ORDER BY in Subqueries โ€ข Order not guaranteed โ€ข Results change โ€ข Use ORDER BY only in final query 9๏ธโƒฃ Mixing Data Types โ€ข Implicit conversions โ€ข Index not used โ€ข Match column data types ๐Ÿ”Ÿ No Query Validation โ€ข Results look right but are wrong โ€ข Always cross-check counts and totals ๐Ÿง  Practice Task โ€ข Rewrite one query โ€ข Remove SELECT * โ€ข Add proper JOIN โ€ข Handle NULLs โ€ข Compare result count SQL Resources: https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v โค๏ธ Double Tap For More

๐—ฃ๐—ฎ๐˜† ๐—”๐—ณ๐˜๐—ฒ๐—ฟ ๐—ฃ๐—น๐—ฎ๐—ฐ๐—ฒ๐—บ๐—ฒ๐—ป๐˜ ๐—ฃ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ ๐—ง๐—ผ ๐—•๐—ฒ๐—ฐ๐—ผ๐—บ๐—ฒ ๐—ฎ ๐—๐—ผ๐—ฏ-๐—ฅ๐—ฒ๐—ฎ๐—ฑ๐˜† ๐—ฆ๐—ผ๐—ณ๐˜๐˜„๐—ฎ๐—ฟ๐—ฒ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๏ฟฝ
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โœ… Advanced SQL Practice Questions with Answers ๐Ÿง ๐Ÿ“ 1๏ธโƒฃ Get the second highest salary from the employees table.
SELECT MAX(salary)  
FROM employees  
WHERE salary < (SELECT MAX(salary) FROM employees);
2๏ธโƒฃ List employees who earn more than the average salary.
SELECT name, salary  
FROM employees  
WHERE salary > (SELECT AVG(salary) FROM employees);
3๏ธโƒฃ Show department-wise highest paid employee.
SELECT department, name, salary  
FROM (
  SELECT *,  
         RANK() OVER (PARTITION BY department ORDER BY salary DESC) AS rnk  
  FROM employees
) AS ranked  
WHERE rnk = 1;
4๏ธโƒฃ Display total sales made by each employee in 2023.
SELECT emp_id, SUM(amount) AS total_sales  
FROM sales  
WHERE YEAR(sale_date) = 2023  
GROUP BY emp_id;
5๏ธโƒฃ Retrieve products with price above average in their category.
SELECT p.name, p.category, p.price  
FROM products p  
WHERE price > (
  SELECT AVG(price)  
  FROM products  
  WHERE category = p.category
);
6๏ธโƒฃ Identify duplicate emails in the users table.
SELECT email, COUNT(*)  
FROM users  
GROUP BY email  
HAVING COUNT(*) > 1;
7๏ธโƒฃ Rank customers based on total purchase amount.
SELECT customer_id,
SUM(amount) AS total_spent,  
       RANK() OVER (ORDER BY SUM(amount) DESC) AS rank  
FROM orders  
GROUP BY customer_id;
๐Ÿ’ฌ Double Tap โค๏ธ For More!

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โœ… Complete Roadmap to Mastering SQL ๐Ÿš€ ๐Ÿ—„๏ธ ๐Ÿ“‚ 1. SQL Fundamentals โ€“ What is a database & DBMS โ€“ Basic Syntax: SELECT, FROM, WHERE โ€“ Data Types: INT, VARCHAR, DATE, etc. โ€“ Operators: =, >, <, LIKE, IN โ€“ Aliases & Comments ๐Ÿ“‚ 2. Filtering & Sorting โ€“ WHERE Clause: Advanced conditions โ€“ ORDER BY: Sorting results โ€“ LIMIT: Restricting rows โ€“ DISTINCT: Unique values ๐Ÿ“‚ 3. Aggregate Functions โ€“ COUNT(), SUM(), AVG(), MIN(), MAX() โ€“ GROUP BY: Grouping data โ€“ HAVING: Filtering grouped data ๐Ÿ“‚ 4. Joins & Relationships โ€“ INNER JOIN: Matching rows โ€“ LEFT/RIGHT JOIN: All rows from one table โ€“ FULL OUTER JOIN: All rows from both tables โ€“ Self Join: Joining a table to itself โ€“ Subqueries: Queries within queries ๐Ÿ“‚ 5. Advanced Filtering โ€“ IN, BETWEEN, LIKE operators โ€“ NULL values: IS NULL, IS NOT NULL โ€“ EXISTS operator ๐Ÿ“‚ 6. Subqueries & CTEs โ€“ Subqueries in SELECT, FROM, WHERE โ€“ Common Table Expressions (CTEs): Reusable queries ๐Ÿ“‚ 7. Window Functions โ€“ RANK(), DENSE_RANK(), ROW_NUMBER() โ€“ LAG(), LEAD() โ€“ OVER() clause: Defining the window โ€“ Partitioning: PARTITION BY ๐Ÿ“‚ 8. Data Manipulation โ€“ INSERT: Adding new data โ€“ UPDATE: Modifying existing data โ€“ DELETE: Removing data โ€“ MERGE: Combining data (upsert) ๐Ÿ“‚ 9. Database Design โ€“ Normalization: Reducing redundancy โ€“ Primary & Foreign Keys: Relationships โ€“ Data types & Constraints โ€“ Indexing: Improving query performance ๐Ÿ“‚ 10. Advanced Topics โ€“ Stored Procedures: Precompiled SQL โ€“ Triggers: Automatic actions โ€“ Views: Virtual tables โ€“ Performance Tuning: Optimizing queries โ€“ Security: User permissions ๐Ÿ“‚ 11. Practice & Projects โ€“ Solve coding challenges on platforms like *LeetCode, HackerRank* โ€“ Work on real-world projects using datasets from *Kaggle, Data.gov* โ€“ Build a portfolio to showcase your SQL skills ๐Ÿ’ฌ Tap โค๏ธ if you found this helpful!

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๐Ÿ“Š Complete SQL Syllabus Roadmap (Beginner to Expert) ๐Ÿ—„๏ธ ๐Ÿ”ฐ Beginner Level: 1. Intro to Databases: What are databases, Relational vs. Non-Relational 2. SQL Basics: SELECT, FROM, WHERE 3. Data Types: INT, VARCHAR, DATE, BOOLEAN, etc. 4. Operators: Comparison, Logical (AND, OR, NOT) 5. Sorting & Filtering: ORDER BY, LIMIT, DISTINCT 6. Aggregate Functions: COUNT, SUM, AVG, MIN, MAX 7. GROUP BY and HAVING: Grouping Data and Filtering Groups 8. Basic Projects: Creating and querying a simple database (e.g., a student database) โš™๏ธ Intermediate Level: 1. Joins: INNER, LEFT, RIGHT, FULL OUTER JOIN 2. Subqueries: Using queries within queries 3. Indexes: Improving Query Performance 4. Data Modification: INSERT, UPDATE, DELETE 5. Transactions: ACID Properties, COMMIT, ROLLBACK 6. Constraints: PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, CHECK, DEFAULT 7. Views: Creating Virtual Tables 8. Stored Procedures & Functions: Reusable SQL Code 9. Date and Time Functions: Working with Date and Time Data 10. Intermediate Projects: Designing and querying a more complex database (e.g., an e-commerce database) ๐Ÿ† Expert Level: 1. Window Functions: RANK, ROW_NUMBER, LAG, LEAD 2. Common Table Expressions (CTEs): Recursive and Non-Recursive 3. Performance Tuning: Query Optimization Techniques 4. Database Design & Normalization: Understanding Database Schemas (Star, Snowflake) 5. Advanced Indexing: Clustered, Non-Clustered, Filtered Indexes 6. Database Administration: Backup and Recovery, Security, User Management 7. Working with Large Datasets: Partitioning, Data Warehousing Concepts 8. NoSQL Databases: Introduction to MongoDB, Cassandra, etc. (optional) 9. SQL Injection Prevention: Secure Coding Practices 10. Expert Projects: Designing, optimizing, and managing a large-scale database (e.g., a social media database) ๐Ÿ’ก Bonus: Learn about Database Security, Cloud Databases (AWS RDS, Azure SQL Database, Google Cloud SQL), and Data Modeling Tools. ๐Ÿ‘ Tap โค๏ธ for more

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โœ… Data Science: Tools You Should Know as a Beginner ๐Ÿงฐ๐Ÿ“Š Mastering these tools helps you build real-world data projects faster and smarter: 1๏ธโƒฃ Python โœ” Most popular language in data science โœ” Libraries: NumPy, Pandas, Scikit-learn, Matplotlib, Seaborn ๐Ÿ“Œ Use: Data cleaning, EDA, modeling, automation 2๏ธโƒฃ Jupyter Notebook โœ” Interactive coding environment โœ” Great for documentation + visualization ๐Ÿ“Œ Use: Prototyping & explaining models 3๏ธโƒฃ SQL โœ” Essential for querying databases ๐Ÿ“Œ Use: Data extraction, filtering, joins, aggregations 4๏ธโƒฃ Excel / Google Sheets โœ” Quick analysis & reports ๐Ÿ“Œ Use: Data exploration, pivot tables, charts 5๏ธโƒฃ Power BI / Tableau โœ” Drag-and-drop dashboards ๐Ÿ“Œ Use: Visual storytelling & business insights 6๏ธโƒฃ Git & GitHub โœ” Track code changes + collaborate ๐Ÿ“Œ Use: Version control, building your portfolio 7๏ธโƒฃ Scikit-learn โœ” Ready-to-use ML models ๐Ÿ“Œ Use: Classification, regression, model evaluation 8๏ธโƒฃ Google Colab / Kaggle Notebooks โœ” Free, cloud-based Python environment ๐Ÿ“Œ Use: Practice & run notebooks without setup ๐Ÿง  Bonus: โ€ข VS Code โ€“ for scalable Python projects โ€ข APIs โ€“ for real-world data access โ€ข Streamlit โ€“ build data apps without frontend knowledge Double Tap โ™ฅ๏ธ For More

๐Ÿ—„๏ธ ๐—ง๐—ผ๐—ฝ ๐Ÿฑ ๐—™๐—ฅ๐—˜๐—˜ ๐—ฆ๐—ค๐—Ÿ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐Ÿš€ SQL is one of the most important skills for Data A
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Don't forget to check these 10 SQL projects with corresponding datasets that you could use to practice your SQL skills: 1. Analysis of Sales Data: (https://www.kaggle.com/kyanyoga/sample-sales-data) 2. HR Analytics: (https://www.kaggle.com/pavansubhasht/ibm-hr-analytics-attrition-dataset) 3. Social Media Analytics: (https://www.kaggle.com/datasets/ramjasmaurya/top-1000-social-media-channels) 4. Financial Data Analysis: (https://www.kaggle.com/datasets/nitindatta/finance-data) 5. Healthcare Data Analysis: (https://www.kaggle.com/cdc/mortality) 6. Customer Relationship Management: (https://www.kaggle.com/pankajjsh06/ibm-watson-marketing-customer-value-data) 7. Web Analytics: (https://www.kaggle.com/zynicide/wine-reviews) 8. E-commerce Analysis: (https://www.kaggle.com/olistbr/brazilian-ecommerce) 9. Supply Chain Management: (https://www.kaggle.com/datasets/harshsingh2209/supply-chain-analysis) 10. Inventory Management: (https://www.kaggle.com/datasets?search=inventory+management) Share this channel with your friends ๐Ÿค๐Ÿคฉ Join for more -> https://whatsapp.com/channel/0029VaxbzNFCxoAmYgiGTL3Z ENJOY LEARNING ๐Ÿ‘๐Ÿ‘