💡 Data Engineering is all about moving, transforming & storing data efficiently. No matter the company, you’ll always deal with databases. And guess what? SQL is the universal language of data! #BigData #DataAnalytics #SQLforDataEngineers

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hardware considerations. Example: - Use EXPLAIN to analyze query performance. - Optimize joins and subqueries. #SQLPerformanceTuning #DataEngineering #SQL #Datafam #SQLForDataEngineers #DataEngineer #30DaysOfSQLNugget

>>>This query below assigns a unique row number to each employee based on their salary in descending order. #DataEngineering #SQLRow_number #Datafam #SQLForDataEngineers #DataEngineer #30DaysOfSQLNugget #SQLFunctions #DataAnalysis

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CTEs are temporary result sets that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement. They make complex queries easier to read and maintain. #SQLCTEs #DataEngineering #SQL #Datafam #SQLForDataEngineers #Datafam #DataEngineer #30DaysOfSQLNugget

Window functions perform calculations across a set of table rows related to the current row. They are useful for running totals, moving averages, and ranking etc. #SQLWindowFunction #DataEngineering #SQL #Datafam #SQLForDataEngineers #Datafam #DataEngineer #30DaysOfSQLNugget

Functions in SQL are similar to stored procedures but can return a value. They are used to encapsulate reusable code. #SQLFunction #DataEngineering #SQL #datafam #SQLForDataEngineers #datafam #DataEngineer #30DaysOfSQLNugget

Triggers are special types of stored procedures that automatically execute when certain events occur in the database. #SQLTriggers #DataEngineering #SQL #SQLForDataEngineers #datafam #DataEngineer #30DaysOfSQLNugget

Stored procedures are a set of SQL statements that can be executed as a program. They help in automating repetitive tasks. #SQLStoredProcedure #DataEngineering #SQL #SQLForDataEngineers #DataEngineer #30DaysOfSQLNugget

Transactions in SQL are used to ensure that a series of SQL operations are executed as a single unit. This helps maintain data integrity. #SQLTransaction #DataEngineering #SQL #SQLForDataEngineers #DataEngineer #30DaysOfSQLNugget

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💡Pro Tip: Use CASE statements to create new categories or flags in your data for deeper insights. #DataEngineering #SQL #SQLForDataEngineers #DataEngineering #30DaysOfSQLNugget

- FULL JOIN: Returns all records when there is a match in either left or right table. #SQLJoins #DataEngineering #SQL #SQLForDataEngineers #DataEngineering #30DaysOfSQLNugget

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