
Data Analyst
CognoWizContract
Required Skillset:
SQL
Job Description
Must Have -
- Design, write, and optimize complex SQL queries to extract, transform, and analyze data from multiple sources
- Develop and maintain Power BI dashboards and reports, ensuring data accuracy, performance, and business relevance
- Use Python for data cleaning, transformation, automation, and advanced analytics
- Strong hands on experience with SQL (joins, CTEs, subqueries, performance optimization)
- Strong hands on experience with Advanced SQL, including:
• Window functions (ROW_NUMBER, RANK, LAG/LEAD)
• CTEs and recursive queries
• Query performance tuning and optimization
• Advanced aggregations and conditional logic
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