Power BI & Tableau Resources
๐ Resources to learn Power BI, Tableau & Data Visualisation Perfect channel to start learning everything about Data Analytics Admin: @coderfun
Ko'proq ko'rsatish๐ Telegram kanali Power BI & Tableau Resources analitikasi
Power BI & Tableau Resources (@powerbi_analyst) Ingliz til segmentidagi kanali faol ishtirokchi. Hozirda hamjamiyat 55 458 obunachidan iborat bo'lib, Taสผlim toifasida 3 073-o'rinni va Hindiston mintaqasida 6 602-o'rinni egallagan.
๐ Auditoriya koโrsatkichlari va dinamika
ะฝะตะฒัะดะพะผะพ sanasidan buyon loyiha tez oโsib, 55 458 obunachiga ega boโldi.
13 Iyun, 2026 dagi oxirgi maโlumotlarga koโra kanal barqaror faollikka ega. Oxirgi 30 kunda obunachilar soni 308 ga, soโnggi 24 soatda esa 37 ga oโzgardi va umumiy qamrov yuqori darajada qolmoqda.
- Tasdiqlash holati: Tasdiqlanmagan
- Jalb etish (ER): Auditoriya oโrtacha 2.54% darajada jalb etiladi. Nashrdan keyingi dastlabki 24 soatda kontent odatda umumiy obunachilar sonining 1.00% ini tashkil etuvchi reaksiyalarni toโplaydi.
- Post qamrovi: Har bir post oโrtacha 1 406 marta koโriladi; birinchi sutkada odatda 553 ta koโrish yigโiladi.
- Reaksiyalar va oโzaro taโsir: Auditoriya faol: har bir postga oโrtacha 3 ta reaksiya keladi.
- Tematik yoโnalishlar: Kontent dax, visual, dashboard, chart, slicer kabi asosiy mavzularga jamlangan.
๐ Tavsif va kontent siyosati
Muallif resursni shaxsiy fikrni ifoda etish maydoni sifatida taโriflaydi:
โ๐ Resources to learn Power BI, Tableau & Data Visualisation
Perfect channel to start learning everything about Data Analytics
Admin: @coderfunโ
Yuqori yangilanish chastotasi (oxirgi maโlumot 14 Iyun, 2026 da olingan) sababli kanal doimo dolzarb va katta qamrovli boโlib qoladi. Analitika auditoriya kontent bilan faol hamkorlik qilishini, uni Taสผlim toifasidagi muhim taโsir nuqtasiga aylantirishini koโrsatadi.
SELECT * FROM Orders
WHERE Sales > (SELECT AVG(Sales) FROM Orders);
๐ 14. Common Table Expressions (CTE)
Makes complex queries easier.
WITH SalesCTE AS
(
SELECT Region, SUM(Sales) AS TotalSales
FROM Orders
GROUP BY Region
)
SELECT * FROM SalesCTE;
๐ Very common in Data Analyst interviews.
๐ 15. Window Functions (IMPORTANT)
ROW_NUMBER(): Assigns unique numbers
RANK(): Ranks with gaps
DENSE_RANK(): Ranks without gaps
๐ 16. Real-World SQL Query
Top 5 Products by Sales
SELECT Product, SUM(Sales) AS TotalSales
FROM Orders
GROUP BY Product
ORDER BY TotalSales DESC
LIMIT 5;
๐ 17. SQL Interview Questions
Beginner:
1. What is SQL?
2. Difference between WHERE and HAVING?
3. What is GROUP BY?
4. What is DISTINCT?
5. Explain aggregate functions.
Intermediate:
1. Difference between INNER and LEFT JOIN?
2. What is a CTE?
3. What are Window Functions?
4. What is a Subquery?
5. What is a Primary Key?
๐ 18. SQL Project
๐ E-Commerce Sales Analysis
Tables: Customers, Orders, Products
Tasks:
โ Total Revenue,
โ Top Products,
โ Monthly Sales,
โ Region Analysis,
โ Customer Analysis
๐ 19. Common SQL Mistakes
โ Missing JOIN conditions
โ Using SELECT * everywhere
โ Ignoring NULL values
โ Not using aliases
โ Poor filtering
๐ฏ Goal of This Topic
After completing SQL, you should be able to:
โ
Query databases confidently
โ
Use JOINS effectively
โ
Aggregate business data
โ
Solve interview questions
โ
Prepare data for Power BI
Double Tap โค๏ธ For More
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1.19 โฝ ยท /balance_helpSELECT *
FROM Customers;
Output: Returns all columns.
Select Specific Columns
SELECT Name, City
FROM Customers;
๐ Most commonly used SQL statement.
๐ 5. WHERE Clause
Used to filter records.
Example:
SELECT *
FROM Orders
WHERE Sales > 5000;
Output: Only orders with sales greater than 5000.
Multiple Conditions
SELECT *
FROM Orders
WHERE Sales > 5000
AND Region = 'West';
๐ 6. ORDER BY
Sorts data.
Ascending:
SELECT * FROM Orders ORDER BY Sales ASC;
Descending:
SELECT * FROM Orders ORDER BY Sales DESC;
๐ 7. DISTINCT
Removes duplicate values.
Example:
SELECT DISTINCT Region FROM Customers;
Output: Unique regions only.
๐ 8. Aggregate Functions
Used to summarize data.
COUNT: SELECT COUNT(*) FROM Orders; โ Counts rows.
SUM: SELECT SUM(Sales) FROM Orders; โ Calculates total sales.
AVG: SELECT AVG(Sales) FROM Orders; โ Calculates average sales.
MIN: SELECT MIN(Sales) FROM Orders; โ Smallest value.
MAX: SELECT MAX(Sales) FROM Orders; โ Largest value.
๐ 9. GROUP BY
Used for aggregation by category.
Example:
SELECT Region, SUM(Sales) AS TotalSales
FROM Orders
GROUP BY Region;
Output:
Region : TotalSales โ North : 50000, South : 70000
๐ 10. HAVING
Filters grouped data.
Example:
SELECT Region, SUM(Sales)
FROM Orders
GROUP BY Region
HAVING SUM(Sales) > 50000;
๐ HAVING works after GROUP BY.
๐ 11. SQL JOINS (VERY IMPORTANT)
Most interview questions come from JOINS.
INNER JOIN: Returns matching records.
LEFT JOIN: All records from left table + matching records from right table
RIGHT JOIN: All records from right table + matching records from left table
FULL JOIN: Returns all records from both tables
๐ 12. CASE WHEN
Used like IF statements.
SELECT Product,
CASE WHEN Sales > 10000 THEN 'High' ELSE 'Low' END AS Category
FROM Orders;
๐ 13. Subqueries
Query inside another query.Using data to make smarter business decisions.BI helps companies: โข Analyze sales โข Monitor performance โข Track KPIs โข Predict trends โข Improve profits ๐ 4. What is Power BI? Microsoft Power BI is a Business Intelligence and Data Visualization tool developed by Microsoft. It helps businesses: โ Connect data โ Clean data โ Analyze data โ Create dashboards โ Share reports ๐ 5. Why Companies Use Data Analytics Companies generate huge amounts of data daily. Examples: โข E-commerce websites โข Banking systems โข Hospitals โข Mobile apps โข Social media platforms Companies analyze data to: โ Increase revenue โ Reduce costs โ Improve customer experience โ Track employee performance โ Predict future trends ๐ 6. Types of Analytics There are 4 major types of analytics. ๐น A. Descriptive Analytics Answers:
โWhat happened?โExample: โข Total sales last month โข Number of customers โข Revenue generated Power BI Usage: โ KPI Cards โ Charts โ Dashboards ๐น B. Diagnostic Analytics Answers:
โWhy did it happen?โExample: โข Why sales dropped? โข Why churn increased? Techniques: โ Drill-down analysis โ Comparisons โ Root-cause analysis ๐น C. Predictive Analytics Answers:
โWhat may happen next?โExample: โข Future sales forecast โข Customer churn prediction Technologies: โ Machine Learning โ AI Models โ Forecasting ๐น D. Prescriptive Analytics Answers:
โWhat should we do?โExample: โข Which marketing strategy to use? โข Which products to stock more? Goal: Recommend actions for better business outcomes. ๐ 7. What are KPIs? KPI = Key Performance Indicator KPIs measure business performance. ๐ Common KPIs: Domain : KPI Examples Sales : Revenue, Profit Marketing : Conversion Rate HR : Employee Attrition Finance : Net Profit Margin ๐ 8. Structured vs Unstructured Data ๐น Structured Data Data stored in rows and columns.
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