For more information, visit the Petroleum Professional Development Center website at https://mcce.midland.edu > Oil & Gas ...

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Aggregate functions help turn large datasets into simple summaries used across many fields. GROUP BY and HAVING allow structured grouping and filtering of data for clearer reports. Functions like ...

This page contains solutions for all HackerRank SQL challenges which were passed successfully. There can be multiple ways of approaching solution to any problem. Please find the provided solutions for ...