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Commit e7bccad

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Update README.md
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‎README.md‎

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@@ -1116,6 +1116,8 @@ SELECT
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NOT (1, NULL) IS NULL as "NOT (1, NULL) IS NULL" --true --!!!
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```
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См. так же [NULL-значения в PostgreSQL: правила и исключения](https://habr.com/ru/companies/postgrespro/articles/697300/)
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### Как очень быстро получить количество записей в большой таблице?
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Применение: отображение общего кол-ва записей в админках.

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