FULL OUTER JOIN в SQL: объяснение на примере
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Внешнее объединение — OUTER JOIN — бывает трех видов: LEFT JOIN, RIGHT JOIN и FULL OUTER JOIN (левое, правое и полное). В этой статье мы разберем на примере FULL OUTER JOIN (полное внешнее объединение).
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BY SQL для тестировщика
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SQL для тестировщика from id