使用postgres和jooq按时间分组

import org.jooq.*;
import org.jooq.impl.*;
import static org.jooq.impl.DSL.*;
import static your.generated.tables.YourTable.*;

public class Main {
    public static void main(String[] args) {
        // 创建数据库连接
        Connection connection = // ...
        DSLContext context = DSL.using(connection, SQLDialect.POSTGRES);

        // 按时间字段分组并统计每个分组内的记录数
        Result<Record2<Date, Integer>> result = context.select(YOUR_TABLE.TIME_COLUMN, count())
                                                    .from(YOUR_TABLE)
                                                    .groupBy(YOUR_TABLE.TIME_COLUMN)
                                                    .fetch();

        // 输出结果
        for (Record2<Date, Integer> record : result) {
            Date time = record.value1();
            int count = record.value2();
            System.out.println("时间: " + time + ", 记录数: " + count);
        }
        
        // 关闭数据库连接
        connection.close();
    }
}