What do you see as an issue? The guides/airflow-sql-tutorial.md guide is a valuable resource for users learning to interact with SQL databases in Airflow. However, the guide is currently out of date ...
Hello there! 👋 I'm Luca, a BI Developer with a passion for all things data, Proficient in Python, SQL and Power BI ...
SQL is the de facto query language used to interact with databases. Since SQL is declarative, users express the intended result of their query rather than the concrete procedural steps to produce the ...
1️) Scalar Subquery in SELECT: SELECT e.emp_id, e.emp_name, e.salary, (SELECT ROUND(AVG(salary), 2) FROM employees WHERE dept_id = e.dept_id) AS dept_avg_salary FROM employees e; 2️) Correlated ...
Abstract: We discuss some enhancements of approximate SQL extensions available in Infobright's database technology. We explain how these new enhancements can speed up execution of complex correlated ...
Abstract: Transforming queries for efficient execution is particularly important in federated database systems since a more efficient execution plan can require many fewer data requests to be sent to ...
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