按年

  • PostgreSQL实现按年、月、日、周、时、分、秒的分组统计

    要在PostgreSQL中实现按年、月、日、周、时、分、秒的分组统计,可以使用以下SQL语句:,,``sql,SELECT, date_trunc('year', time_column) AS year,, date_trunc('month', time_column) AS month,, date_trunc('day', time_column) AS day,, date_trunc('week', time_column) AS week,, date_trunc('hour', time_column) AS hour,, date_trunc('minute', time_column) AS minute,, date_trunc('second', time_column) AS second,, COUNT(*),FROM, your_table,GROUP BY, year, month, day, week, hour, minute, second;,`,,请将time_column替换为你的表中的时间列名,将your_table`替换为你的表名。

    2024-05-22
    0123
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