Posts in: Databases
GROUP BY and HAVING in MySQL
Aggregate data into groups using GROUP BY and filter grouped results using HAVING.
Read More →Advanced Aggregation with ROLLUP
Use the ROLLUP modifier to create subtotals and grand totals in GROUP BY results.
Read More →Mastering INNER, LEFT, and RIGHT Joins
Understand the essential join types for combining data from multiple related tables.
Read More →Exploring FULL OUTER and CROSS Joins
Learn about FULL OUTER JOIN (simulated) and CROSS JOIN to produce comprehensive row combinations.
Read More →Self Joins and Table Aliases in MySQL
Use self joins and aliases to compare rows within the same table, useful for hierarchical or peer comparisons.
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