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Бесплатный закрытый практикум по SQL. Восьмой поток. Занятие №7
SQL
Большие данные
ИТ и программирование
17 February, from 10:00 to 14:00 Moscow time
Registration has ended 17 February в 17:00
Already Going:
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About the event
Использование простых SQL функций
Агрегатные функции. "SUM()","COUNT()","AVG()","MAX()","MIN()". Дополнение "FILTER ( WHERE ...)"
Single row функции. "Ltrim()", "Rtrim()", "Substr()", "Position()", "Split_Part()", "Upper()", "Lower()", "Initcap()", "Replace()", "Round()" и т.д
Обработка Null-значений. "NVL()", "Coalesce()"
Функции преобразования формата или типа данных. "To_Number()", "To_Char()", "To_Date()", "Cast()" и т.д
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