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Step8rother

Применение агрегирующих функций, задача 5

Jun 24th, 2023
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SQL 0.04 KB | Source Code | 0 0
  1. SELECT COUNT(*) - COUNT(fax)
  2. FROM client;
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  • Step8rother
    1 year
    # text 0.11 KB | 0 0
    1. Посчитайте, сколько пропусков содержит поле fax из таблицы client.
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