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What is SQL GROUP BY and Set Operators Practice about?

This document contains practice problems and solutions for SQL concepts including GROUP BY, HAVING, ROLLUP, CUBE, GROUPING SETS, UNION, UNION ALL, INTERSECT, and MINUS. It includes 6 problems on using GROUP BY and HAVING clauses, 3 problems using ROLLUP, CUBE and GROUPING SETS, and 6 problems using set operators to combine data from multiple tables. The goals are to summarize data, identify duplicates using different techniques, and combine records from two different tables.

Author

gery sumual

Language

EN