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Data Analytics
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Perfect channel to learn Data Analytics Learn SQL, Python, Alteryx, Tableau, Power BI and many more For Promotions: @coderfun @love_data
Show moreπ Analytical overview of Telegram channel Data Analytics
Channel Data Analytics (@sqlspecialist) in the English language segment is an active participant. Currently, the community unites 109 740 subscribers, ranking 1 113 in the Technologies & Applications category and 2 324 in the India region.
π Audience metrics and dynamics
Since its creation on Π½Π΅Π²ΡΠ΄ΠΎΠΌΠΎ, the project has demonstrated rapid growth, gathering an audience of 109 740 subscribers.
According to the latest data from 27 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by 610 over the last 30 days and by 45 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 2.51%. Within the first 24 hours after publication, content typically collects 1.12% reactions from the total number of subscribers.
- Post reach: On average, each post receives 2 753 views. Within the first day, a publication typically gains 1 230 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 7.
- Thematic interests: Content is focused on key topics such as row, sql, analytic, analyst, visualization.
π Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
βPerfect channel to learn Data Analytics
Learn SQL, Python, Alteryx, Tableau, Power BI and many more
For Promotions: @coderfun @love_dataβ
Thanks to the high frequency of updates (latest data received on 28 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.
109 740
Subscribers
+4524 hours
+1667 days
+61030 days
Posts Archive
109 760
Power BI LEARNING SERIES PART-10
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Now, let's talk about Advanced Visualizations:
- Drillthrough and bookmarks: Drillthrough allows users to navigate from a summary report to a detailed report by clicking on a data point. Bookmarks enable users to save and revisit specific states of a report, facilitating storytelling and interactive exploration of data.
- Hierarchies and custom visuals: Hierarchies allow users to drill down into data at different levels of granularity, such as year, quarter, month, and day. Custom visuals extend Power BI's visualization capabilities by enabling users to create unique and specialized visualizations tailored to their specific needs.
- Geo-spatial visualizations: Power BI supports geo-spatial visualizations such as maps, which allow users to visualize data based on geographic locations. This is useful for analyzing regional trends, identifying geographic patterns, and gaining insights from location-based data.
Example:
- Drillthrough and bookmarks: In a sales performance dashboard, users can drill through from a high-level summary of sales revenue to a detailed report showing sales by product category, customer segment, or geographical region. Bookmarks can be used to save specific views of the data, such as a filtered view for a particular sales territory or time period.
- Hierarchies and custom visuals: A financial analysis dashboard may include a hierarchical view of financial data, allowing users to drill down from an overview of total revenue to detailed breakdowns by product, customer, and region. Custom visuals, such as a waterfall chart or a Sankey diagram, can provide additional insights into financial performance and trends.
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109 760
Power BI LEARNING SERIES PART-9
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Let's learn about Power BI Governance in detail today:
- Monitoring and managing usage: Power BI governance involves monitoring and managing the usage of Power BI resources within an organization. This includes tracking user activity, analyzing usage patterns, and optimizing resource allocation to ensure efficient utilization of Power BI resources.
- Best practices for deployment: Implementing best practices for deploying Power BI resources helps maintain consistency, reliability, and scalability across the organization. This includes standardized naming conventions, folder structures, and deployment processes to streamline development and deployment workflows.
- Version control and deployment pipelines: Version control and deployment pipelines ensure that changes to Power BI reports, dashboards, and datasets are properly managed and deployed in a controlled manner. This helps prevent issues such as conflicting changes, data inconsistencies, and deployment errors.
Example:
- Monitoring and managing usage: A Power BI administrator can use usage metrics and audit logs to track user activity, identify underutilized resources, and optimize license allocation. By analyzing usage patterns, the administrator can ensure that resources are allocated efficiently and users have access to the insights they need.
- Best practices for deployment: Implementing a standardized deployment process, such as using development, testing, and production environments, ensures that changes to Power BI content are thoroughly tested before being deployed to production. This reduces the risk of errors and disruptions to business operations.
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109 760
Power BI LEARNING SERIES PART-8
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Today, let's discuss about Power BI Security: π
- Row-level security: Power BI allows you to implement row-level security to restrict data access based on user roles or criteria. This ensures that users only see the data relevant to their role or permissions, maintaining data confidentiality and integrity.
- Data source permissions: Power BI integrates with various data sources, and it's essential to manage permissions at both the dataset and data source levels. This ensures that only authorized users can access and interact with the underlying data.
- Power BI service security features: The Power BI service offers additional security features such as encryption, multi-factor authentication, and activity logging. These features help protect data both at rest and in transit, safeguarding it against unauthorized access and ensuring compliance with security regulations.
Example:
- Row-level security: In a sales organization, you can implement row-level security to restrict sales representatives' access to only the accounts or territories they are responsible for. This ensures that each salesperson can only view and analyze data relevant to their assigned accounts, protecting sensitive information and preventing data leakage.
- Data source permissions: Suppose your organization stores sensitive HR data in an on-premises SQL Server database. When connecting Power BI to this database, you can configure data source permissions to grant access only to HR managers and administrators, ensuring that only authorized personnel can access and analyze HR-related insights.
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109 760
Power BI LEARNING SERIES PART-7
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Today, let's discuss about Power BI Integration in detail:
- Integrating Power BI with other Microsoft tools: Power BI seamlessly integrates with other Microsoft tools such as Excel, SharePoint, and Teams. This integration allows users to embed Power BI reports and dashboards directly into these applications, enhancing data accessibility and collaboration.
- Embedding Power BI reports in websites and applications: Power BI provides capabilities for embedding reports and dashboards into custom websites and applications. This allows organizations to share insights with external stakeholders or embed analytics directly into customer-facing applications.
Example:
- Integrating Power BI with Excel: You can connect Power BI to Excel data models, enabling Excel users to leverage Power BI's visualization capabilities without leaving the familiar Excel interface. This integration streamlines the process of creating dynamic reports and dashboards using Excel data.
- Embedding Power BI reports in SharePoint: By embedding Power BI reports into SharePoint pages, you can create interactive data portals for teams or departments. For example, a sales team's SharePoint site can feature embedded Power BI dashboards showcasing sales performance metrics, pipeline analysis, and forecasts.
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109 760
On your request, I am continuing Power BI Series. Planning to also start Tableau & Excel Learning Series π
109 760
Power BI LEARNING SERIES PART-6
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Now, let's discuss about Power BI Service in detail:
- Publishing and sharing reports: Once you've created reports in Power BI Desktop, you can publish them to the Power BI Service. Publishing enables easy sharing and collaboration, allowing colleagues to access and interact with the reports online. Users can view reports, apply filters, and even create their own visualizations.
- Power BI workspaces and apps: Power BI workspaces are collaborative environments where users can share and collaborate on content. Within a workspace, you can create and organize reports, dashboards, and datasets. Apps allow you to package this content and distribute it to specific groups of users within your organization, making it easy for teams to access relevant insights.
Real-world Scenerio:
- Publishing and sharing reports: Imagine you've created a sales performance dashboard in Power BI Desktop, showcasing key metrics such as revenue, units sold, and top-performing products. By publishing this dashboard to the Power BI Service, your sales team can access it from anywhere with an internet connection. They can monitor sales performance in real-time, drill down into specific regions or product categories, and collaborate on strategies to improve sales.
- Power BI workspaces and apps: Within a marketing analytics workspace, you can collaborate with your marketing team on various reports and dashboards related to campaign performance, website analytics, and customer segmentation. By packaging these resources into an app tailored for the marketing department, you streamline access to critical insights and ensure everyone is working with the same up-to-date information.
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109 760
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109 760
Power BI LEARNING SERIES PART-5
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Today, we will learn about advanced DAX:
- Time intelligence functions: These are DAX functions specifically designed to analyze data over time periods. For instance,
TOTALYTD calculates the year-to-date total for a measure. It's useful for comparing cumulative values such as sales or expenses across different time frames.
- Advanced DAX functions and scenarios: DAX offers various advanced functions for complex calculations. For example, RANKX ranks values dynamically based on specified criteria, enabling you to determine the ranking of products by sales volume or customers by satisfaction score.
Real-world scenerios:
- Time intelligence functions: Let's say you want to analyze monthly sales trends and compare them year-over-year. You can use TOTALYTD to calculate the total sales up to the current month for each year. This allows you to see if sales are increasing or decreasing compared to the same period in previous years.
- Advanced DAX functions and scenarios: Suppose you're analyzing customer churn rates and want to identify high-value customers at risk of leaving. Using RANKX, you can rank customers based on their lifetime value or purchase frequency. This helps prioritize retention efforts on customers most valuable to the business.
- Row context vs. filter context: DAX calculations in Power BI are evaluated within either row context or filter context, depending on the context in which they are used. Understanding the difference between these contexts is crucial for writing accurate and efficient DAX formulas.
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Power BI LEARNING SERIES PART-4
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Data Visualization:
- Building reports and dashboards: Power BI enables users to create interactive reports and dashboards by dragging and dropping visual elements onto the canvas. Reports can include various visuals such as charts, graphs, tables, maps, and more.
- Visualization best practices: Effective visualization is crucial for conveying insights from data. Power BI provides a wide range of customization options for formatting visuals, choosing appropriate chart types, and arranging elements to optimize readability and understanding.
- Custom visuals and formatting options: Power BI allows users to extend its visualization capabilities by importing custom visuals from the marketplace or building their own using developer tools. Additionally, there are numerous formatting options available to customize the appearance of visuals according to your preferences.
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109 760
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109 760
Power BI LEARNING SERIES PART-3
Complete Power BI Topics for Data Analysis π
-> https://t.me/sqlspecialist/588
Data Modeling:
- Creating relationships between tables: In Power BI, you can model your data by creating relationships between different tables. This enables you to combine data from multiple sources and analyze it together.
- DAX (Data Analysis Expressions) basics: DAX is a formula language used in Power BI to create calculated columns, measures, and calculated tables. It allows for advanced calculations and manipulation of data within your reports.
- Calculated columns and measures: Calculated columns are columns in your dataset that are calculated based on a formula, while measures are calculations that are dynamically evaluated based on the context of the data being displayed. Both are essential for performing complex analyses in Power BI.
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109 760
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To do this, follow three simple steps:
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109 760
Power BI LEARNING SERIES PART-2
Complete Power BI Topics for Data Analysis π
https://t.me/sqlspecialist/588
Loading and Transforming Data:
- Connecting to various data sources: Power BI allows you to connect to a wide range of data sources including Excel files, databases (SQL Server, MySQL, Oracle), cloud services (Azure, Salesforce), web sources, and more.
- Data loading techniques: Once connected, you can import data into Power BI or use DirectQuery to query data live from the source. Importing data caches it within the Power BI file, while DirectQuery accesses it directly from the source.
- Data cleaning and transformation using Power Query: Power Query is a powerful tool within Power BI for data cleaning and transformation. It allows you to perform tasks like removing duplicates, splitting columns, merging tables, and more to prepare your data for analysis.
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109 760
Thanks for the amazing response guys π
Complete SQL Topics for Data Analysis
->
1. Introduction to Power BI:
- Overview and architecture: Power BI is a business analytics tool by Microsoft, enabling users to visualize and share insights from their data. It includes components like Power BI Desktop for creating reports, Power BI Service for sharing and collaborating, and Power BI Mobile for on-the-go access.
- Installation and setup: To get started, you need to download and install Power BI Desktop. After that, you can connect to various data sources and begin building your reports and dashboards.
109 760
Complete Power BI Topics for Data Analysts ππ
1. Introduction to Power BI
- Overview and architecture
- Installation and setup
2. Loading and Transforming Data
- Connecting to various data sources
- Data loading techniques
- Data cleaning and transformation using Power Query
3. Data Modeling
- Creating relationships between tables
- DAX (Data Analysis Expressions) basics
- Calculated columns and measures
4. Data Visualization
- Building reports and dashboards
- Visualization best practices
- Custom visuals and formatting options
5. Advanced DAX
- Time intelligence functions
- Advanced DAX functions and scenarios
- Row context vs. filter context
6. Power BI Service
- Publishing and sharing reports
- Power BI workspaces and apps
- Power BI mobile app
7. Power BI Integration
- Integrating Power BI with other Microsoft tools (Excel, SharePoint, Teams)
- Embedding Power BI reports in websites and applications
8. Power BI Security
- Row-level security
- Data source permissions
- Power BI service security features
9. Power BI Governance
- Monitoring and managing usage
- Best practices for deployment
- Version control and deployment pipelines
10. Advanced Visualizations
- Drillthrough and bookmarks
- Hierarchies and custom visuals
- Geo-spatial visualizations
11. Power BI Tips and Tricks
- Productivity shortcuts
- Data exploration techniques
- Troubleshooting common issues
12. Power BI and AI Integration
- AI-powered features in Power BI
- Azure Machine Learning integration
- Advanced analytics in Power BI
13. Power BI Report Server
- On-premises deployment
- Managing and securing on-premises reports
- Power BI Report Server vs. Power BI Service
14. Real-world Use Cases
- Case studies and examples
- Industry-specific applications
- Practical scenarios and solutions
You can refer this Power BI book for reference
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109 760
- Actions:
- Operations that return a value to the driver program or write data to an external storage system (e.g.,
reduce, collect).
total_sum = squared_rdd.reduce(lambda x, y: x + y)
from pyspark.sql import SparkSession
spark = SparkSession.builder.appName("example").getOrCreate()
# Create a DataFrame from a CSV file
df = spark.read.csv("file.csv", header=True, inferSchema=True)
df.createOrReplaceTempView("my_table")
result = spark.sql("SELECT * FROM my_table WHERE age > 21")
from pyspark.ml.regression import LinearRegression
# Example linear regression
lr = LinearRegression(featuresCol="features", labelCol="label")
model = lr.fit(training_data)
from pyspark.ml import Estimator
class SparkMLlibEstimator(Estimator):
def fit(self, dataset):
# Distributed training logic
return trained_model
