


How to write SQL to generate daily order quantity and growth statistical reports through the order data table?
For example, I have a database with an order table in it. The table name is orders. This order table has a field add_time, which is the timestamp of adding the order.
I now want to generate a report that displays the daily order quantity and growth, and also needs to include the number of days (Y-m-d format is sufficient, because I will eventually output it to the front-end echarts statistical chart or highcharts statistical chart), how to write the SQL statement for this requirement?
Happy Dragon Boat Festival, thank you for your answer! ~
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For example, I have a database with an order table in it. The table name is orders. This order table has a field add_time, which is the timestamp of adding the order.
I now want to generate a report that displays the daily order quantity and growth, and also needs to include the number of days (Y-m-d format is sufficient, because I will eventually output it to the front-end echarts statistical chart or highcharts statistical chart), how to write the SQL statement for this requirement?
Happy Dragon Boat Festival, thank you for your answer! ~
Because we have just completed the framework of an operating system, I would like to provide a basic idea:
Create a new table and put every item of data you need to count, as well as the statistical time, as columns of the new table, like this:
create table analysis ( today_timestamp varchar(20), order_count varchar(20), increase_value varchar(20), primary key (today_timestamp) );
Write a php script, for example, call
job.php
to get the data you need to count that day: number of orders, growth, etc. For example, if you need the quantity of all orders, justselect count(*) from orders
. How to write it specifically is another question. After obtaining it, insert it into the tableanalysis
just now. If you want it to execute automatically, consider using crontab.When you
要输出到前端的echarts统计图或者highcharts统计图
, just read the data in this table by date
Use group by statistics. The date field is divided into year, month, day, hour, and minute. Each is a column for statistics. Remember to add indexes and sub-tables.
It is best to provide a sample data structure for your requirement
<code>SELECT FROM_UNIXTIME(add_time, "%Y-%m-%d") order_date, count(1) AS today_c, count(1) - last_c AS change_with_last FROM orders LEFT JOIN ( SELECT FROM_UNIXTIME(add_time, "%Y-%m-%d") AS last_date, count(1) AS last_c FROM orders GROUP BY FROM_UNIXTIME(add_time, "%Y-%m-%d") ) last ON ( FROM_UNIXTIME(temp.add_time, "%Y-%m-%d") = DATE_ADD( last.last_date, INTERVAL 1 DAY ) ) GROUP BY FROM_UNIXTIME(add_time);</code>
This should be able to achieve the expected results, but it is best to use a data table to count the daily results, otherwise there will be performance problems

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