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SQL开发知识：SQL对数据进行按月统计或对数据进行按星期统计的实例
SELECT DATE_FORMAT(date, ‘%Y-%m’) AS month, COUNT(*) FROM table GROUP BY month;，SELECT DAYOFWEEK(date) AS we...
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标签：按月统计
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SELECT DATE_FORMAT(date, ‘%Y-%m’) AS month, COUNT(*) FROM table GROUP BY month;，SELECT DAYOFWEEK(date) AS we...
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