'neutral' && )ORDER BY datum DESC该表有三个指数index_status_mit_spam index_user 32 const 7800 Using where; Using filesort
possible_keys是MySQL可能想使用的索引,keys是MySQL</e
假设我想查询一个基于多个WHERE子句的表。 SELECT * WHERE (line_type='section_intro' OR line_type='question') ORDER BY line_order"; SELECT * WHERE (line_order BETWEEN 0 AND 12)
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