Cómo usar la función SUM en MySQL
Read OriginalEste artículo explica en detalle la función SUM de MySQL, una función de agregación clave. Cubre su sintaxis, funcionamiento y cómo combinarla con cláusulas como WHERE, GROUP BY, HAVING y ORDER BY. Incluye ejemplos prácticos como calcular totales de ventas, usar DISTINCT y agrupar resultados, dirigido a quienes buscan dominar consultas SQL.
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