Data Analytics
Perfect channel to learn Data Analytics Learn SQL, Python, Alteryx, Tableau, Power BI and many more For Promotions: @coderfun @love_data
Show more๐ Analytical overview of Telegram channel Data Analytics
Channel Data Analytics (@sqlspecialist) in the English language segment is an active participant. Currently, the community unites 109 568 subscribers, ranking 1 128 in the Technologies & Applications category and 2 343 in the India region.
๐ Audience metrics and dynamics
Since its creation on ะฝะตะฒัะดะพะผะพ, the project has demonstrated rapid growth, gathering an audience of 109 568 subscribers.
According to the latest data from 22 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by 552 over the last 30 days and by -20 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 2.84%. Within the first 24 hours after publication, content typically collects 0.90% reactions from the total number of subscribers.
- Post reach: On average, each post receives 3 113 views. Within the first day, a publication typically gains 988 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 8.
- Thematic interests: Content is focused on key topics such as row, sql, analytic, analyst, visualization.
๐ Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
โPerfect channel to learn Data Analytics
Learn SQL, Python, Alteryx, Tableau, Power BI and many more
For Promotions: @coderfun @love_dataโ
Thanks to the high frequency of updates (latest data received on 23 June, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
SELECT, FROM, WHERE, GROUP BY, HAVING, and ORDER BY clauses. Know how to write queries to retrieve data from databases.
2. SELECT Statement: Learn how to use the SELECT statement to fetch data from one or more tables. Understand how to specify columns, use aliases, and perform simple arithmetic operations within a query.
3. WHERE Clause: Use the WHERE clause to filter records based on specific conditions. Familiarize yourself with logical operators like =, >, <, >=, <=, <>, AND, OR, and NOT.
4. JOIN Operations: Master the different types of joinsโINNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOINโto combine rows from two or more tables based on related columns.
5. GROUP BY and HAVING Clauses: Use the GROUP BY clause to group rows that have the same values in specified columns and aggregate data with functions like COUNT(), SUM(), AVG(), MAX(), and MIN(). The HAVING clause filters groups based on aggregate conditions.
6. ORDER BY Clause: Sort the result set of a query by one or more columns using the ORDER BY clause. Understand how to sort data in ascending (ASC) or descending (DESC) order.
7. Aggregate Functions: Be familiar with aggregate functions like COUNT(), SUM(), AVG(), MIN(), and MAX() to perform calculations on sets of rows, returning a single value.
8. DISTINCT Keyword: Use the DISTINCT keyword to remove duplicate records from the result set, ensuring that only unique records are returned.
9. LIMIT/OFFSET Clauses: Understand how to limit the number of rows returned by a query using LIMIT (or TOP in some SQL dialects) and how to paginate results with OFFSET.
10. Subqueries: Learn how to write subqueries, or nested queries, which are queries within another SQL query. Subqueries can be used in SELECT, WHERE, FROM, and HAVING clauses to provide more specific filtering or selection.
11. UNION and UNION ALL: Know the difference between UNION and UNION ALL. UNION combines the results of two queries and removes duplicates, while UNION ALL combines all results including duplicates.
12. IN, BETWEEN, and LIKE Operators: Use the IN operator to match any value in a list, the BETWEEN operator to filter within a range, and the LIKE operator for pattern matching with wildcards (%, _).
13. NULL Handling: Understand how to work with NULL values in SQL, including using IS NULL, IS NOT NULL, and handling nulls in calculations and joins.
14. CASE Statements: Use the CASE statement to implement conditional logic within SQL queries, allowing you to create new fields or modify existing ones based on specific conditions.
15. Indexes: Know the basics of indexing, including how indexes can improve query performance by speeding up the retrieval of rows. Understand when to create an index and the trade-offs in terms of storage and write performance.
16. Data Types: Be familiar with common SQL data types, such as VARCHAR, CHAR, INT, FLOAT, DATE, and BOOLEAN, and understand how to choose the appropriate data type for a column.
17. String Functions: Learn key string functions like CONCAT(), SUBSTRING(), REPLACE(), LENGTH(), TRIM(), and UPPER()/LOWER() to manipulate text data within queries.
18. Date and Time Functions: Master date and time functions such as NOW(), CURDATE(), DATEDIFF(), DATEADD(), and EXTRACT() to handle and manipulate date and time data effectively.
19. INSERT, UPDATE, DELETE Statements: Understand how to use INSERT to add new records, UPDATE to modify existing records, and DELETE to remove records from a table. Be aware of the implications of these operations, particularly in maintaining data integrity.
20. Constraints: Know the role of constraints like PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, and CHECK in maintaining data integrity and ensuring valid data entry in your database.
Here you can find SQL Interview Resources๐
https://t.me/DataSimplifier
Share with credits: https://t.me/sqlspecialist
Hope it helps :)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())
๐ก Tip: Always check for inconsistent spellings and incorrect date formats!
๐ Task 2: Analyzing Sales Trends
A company wants to know which months have the highest sales.
โ
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;
๐ก Tip: Try adding YEAR(SaleDate) to compare yearly trends!
๐ Task 3: Creating a Business Dashboard
Your manager asks you to create a dashboard showing revenue by region, top-selling products, and monthly growth.
โ
Solution (Using Power BI / Tableau):
๐ Add KPI Cards to show total sales & profit
๐ Use a Line Chart for monthly trends
๐ Create a Bar Chart for top-selling products
๐ Use Filters/Slicers for better interactivity
๐ก Tip: Keep your dashboards clean, interactive, and easy to interpret!
Like this post for more content like this โฅ๏ธ
Share with credits: https://t.me/sqlspecialist
Hope it helps :)
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