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Top 5 Tricky SQL CASE WHEN Examples You Should Practice
Learn how to use the SQL CASE statement to simplify conditional logic, handle complex scenarios, and write cleaner, more powerful SQL queries easily. Read More ⇢
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Understanding SQL LIKE, ILIKE, and RLIKE Operators
Understanding LIKE, ILIKE, and RLIKE in SQL is essential for effective data querying and reporting. LIKE allows case-sensitive pattern matching, while ILIKE provides case-insensitivity, particularly in PostgreSQL. RLIKE supports regular expressions for advanced patterns. Selecting the appropriate operator enhances query accuracy and user experience in database applications. Read More ⇢
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How to Find Matches and Non-matches- Tricky SQL Example
Master the technique of comparing two tables to find matching brand codes and store numbers, and accurately count both matches and non-matches for interviews Read More ⇢
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Notepad++: Convert Comma-Separated Values Easily
Notepad++ offers shortcuts to convert comma-separated values into columns and vice versa. To convert rows into columns, use Ctrl+A and Ctrl+H, replacing commas with line breaks. For the reverse process, replace line breaks with commas using the same shortcuts. This enhances data management efficiency in Notepad++. Read More ⇢
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Which Programming Languages are Essential for AI Learning?
This post outlines essential AI programming languages, skills, and tools for beginners. Key languages include Python, supported by math foundations and machine learning basics. It highlights useful IDEs like PyCharm and Jupyter Notebook, popular libraries, and evaluation metrics. Starting with simple projects enhances learning and skill development in AI. Read More ⇢
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Step-by-Step Guide for AWS Kafka and Kinesis Integration
The post outlines a data processing pipeline using AWS services, including Kafka, Lambda, SQS, and Kinesis. Producers send messages to Kafka, which are consumed by a Lambda function that forwards them to SQS. An SQS Poller Lambda processes these messages and streams them to Kinesis for real-time analytics, with suggestions… Read More ⇢
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How to Configure Databricks Clusters for Optimal Performance
Databricks is a data analytics platform that facilitates big data processing and machine learning through optimized cluster configurations. This blog outlines essential components of clusters—nodes, cores, RAM, and storage—while providing guidance on selecting the right configuration based on workload type, including autoscaling and typical production setups to enhance performance. Read More ⇢
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How to Clone and Edit Notebooks Efficiently in Databricks
This post explains how to clone a notebook and replace a name within it in Databricks. To clone, open the notebook, click the ellipsis, select Clone, and provide a new name. To replace text, use the Find and Replace feature by pressing Ctrl + H, entering the text, and selecting… Read More ⇢
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Viewing Files in Databricks: Local vs DBFS Guide
In Databricks, you can view local files on the driver node and DBFS files through several methods. For local files, use %sh magic commands or Python file I/O. For DBFS, commands like %fs and Databricks Utilities are effective. Spark enables reading Parquet or CSV files. The UI offers a visual… Read More ⇢
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