使用SQL实现按每小时统计数据

SELECT 
    FROM_UNIXTIME(hourtime / 1000, '%Y-%m-%d %H') AS hour,
    COUNT(*) AS count
FROM 
    dspreport
GROUP BY 
    FROM_UNIXTIME(hourtime / 1000, '%Y-%m-%d %H');

SELECT 
    DATE_FORMAT(FROM_UNIXTIME(hourtime / 1000), '%Y-%m-%d %H') AS hour,
    COUNT(*) AS count
FROM 
    dspreport
GROUP BY 
    DATE_FORMAT(FROM_UNIXTIME(hourtime / 1000), '%Y-%m-%d %H');

CREATE TABLE visitor_logs (
  id INT AUTO_INCREMENT PRIMARY KEY,
  ip VARCHAR(50) NOT NULL,
  visit_time DATETIME NOT NULL
);

SELECT
  HOUR(visit_time) AS hour,
  COUNT(DISTINCT ip) AS visitor_count
FROM
  visitor_logs
WHERE
  visit_time BETWEEN '开始时间' AND '结束时间'
GROUP BY
  HOUR(visit_time);

SELECT EXTRACT(HOUR FROM created_at) as hour, COUNT(*) as conversation_count 
FROM conversations 
WHERE created_at BETWEEN '2024-11-19 07:03:28.09' AND '2024-11-26 07:03:28.09' 
GROUP BY EXTRACT(HOUR FROM created_at) 
ORDER BY hour

SELECT DATE(created_at) as date, EXTRACT(HOUR FROM created_at) as hour, COUNT(*) as conversation_count 
FROM conversations 
WHERE created_at BETWEEN '2024-11-19 07:03:28.09' AND '2024-11-26 07:03:28.09' 
GROUP BY DATE(created_at), EXTRACT(HOUR FROM created_at) 
ORDER BY date, hour

type ChartData []struct {
    Date  time.Time `gorm:"column:date"`
    Hour  int       `gorm:"column:hour"`
    Count int       `gorm:"column:count"`
}

​​​​​​​sql := "SELECT DATE(created_at) as date, EXTRACT(HOUR FROM created_at) as hour, COUNT(*) as conversation_count FROM conversations WHERE created_at BETWEEN '2024-11-19 07:03:28.09' AND '2024-11-26 07:03:28.09' GROUP BY DATE(created_at),EXTRACT(HOUR FROM created_at) ORDER BY date, hour"
datas := ChartData{}
err := db.Raw(sql,StartTime,EndTime)//这里StartTime和EndTime可以是提前定义或从前端获取等