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В первой части
мы рассмотрели базовые методы. Во второй — функции для поиска, трансформации, разбиения и динамического форматирования строк. Они помогают эффективно нормализовать данные, готовить отчёты и работать с пользовательским вводом.
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Приёмы для построения сводных таблиц прямо в SQL: от обычных группировок до динамических комбинаций измерений. В шпаргалке собраны примеры с ROLLUP, CUBE, GROUPING SETS, а также полезные функции GROUPING() и HAVING для тонкой аналитики.
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