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並前往https://www.reddit.com/r/flask/comments/i99wcj/sqlalchemy_count_is_slow_when_there_is_1m_rows/

SqlAlchemy count is slow when there is 1M+ rows: flask - Reddit

To get number of impressions I'm using count sqlalchemy function. The problem is that when there is a lot of rows(1M) in impressions table ...

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