Rajesh Sharma

PowerBI & DAX Measures

How to write efficient DAX Time Intelligence measures (YTD, Prior Year, Moving Averages)?

Efficient DAX time‑intelligence uses a proper date table, built‑in functions like TOTALYTD and SAMEPERIODLASTYEAR, and minimal filter removal.

SQL & Data Warehousing

How do Window Functions (`ROW_NUMBER()`, `RANK()`, `LEAD()`, `LAG()`) improve complex analytical SQL queries?

Window functions compute rankings, offsets, and cumulative metrics in one pass, cutting I/O and eliminating self‑joins.

SQL & Data Warehousing

What is the role of Data Lakes (Parquet, Delta Lake, Iceberg) alongside Data Warehouses?

Data lakes store raw data cheaply and provide versioned, schema‑on‑read access, while warehouses deliver fast, curated analytics on curated models.

PostgreSQL & Query Optimization

How to eliminate N+1 database query bottlenecks in Laravel applications using eager loading?

Eliminate N+1 query bottlenecks in Laravel by using Eloquent's `with()` method for eager loading, which fetches all associated data in a minimal number of optimized queries, significantly reducing database load and improving application performance.

Snowflake & BigQuery Pipeline

How to build streaming ingestion pipelines into Snowflake using Snowpipe and Kafka?

Build streaming ingestion pipelines into Snowflake from Kafka using Snowpipe and Kafka Connect by preparing Snowflake objects, creating a Snowpipe, configuring the Snowflake Sink Connector, optionally transforming data, and monitoring for optimal performance.

No peer answers provided yet.

Topic Created 📈 Career Growth in Marketing Open Topic Created 🤖 Machine Learning Open Topic Created 👁️ Computer Vision & Multimodal AI Open Topic Created 🎬 Video & Visual Content Open Topic Created 🛡️ Ethical Hacking & Penetration Testing Open