mysql按天，按周，按月，按季度，按年统计表中的数据

1.按天统计

SELECT
    count(id) id,
    DATE(create_time) create_time
FROM
    tb_time
GROUP BY
    DATE(create_time)
ORDER BY
    DATE(create_time) DESC;

2.按周统计

SELECT
    count(id) id,
    WEEK(create_time) create_time
FROM
    tb_time
GROUP BY
    WEEK(create_time)
ORDER BY
    WEEK(create_time) DESC;

2.按月统计

SELECT
    count(id) id,
    MONTH(create_time) create_time
FROM
   tb_time
GROUP BY
    MONTH(create_time)
ORDER BY
    MONTH(create_time) DESC;

3.按年统计

SELECT
    count(id) id,
    YEAR(create_time) create_time
FROM
    tb_time
GROUP BY
    YEAR(create_time)
ORDER BY
    YEAR(create_time) DESC;