This is a usage example for the MySQL to HTML table combined with the BI mailer. We will make use of the two previous scripts to easily create a scheduled email sending from a MySQL database through a Gmail address with minimal effort.
The idea behind it was to be able to create a new email with only the base building blocks: the MySQL query for data source, subject/recipients as envelope/destination.
The advantage of this combination is the necessity of only 3(!) lines of code for a new email, allowing you to leverage email as an easy and flexible distribution channel for BI data.
In the example below we also add a greeting along with a relevant subject line, which raises our grand total to 4 easily readable lines of code to send an email from MySQL to Gmail. The connection string I used for the query is an open MySQL database with DNA info (this should go in your sql_to_html file).
The email contains a random sample of DNA shortened to 64 characters length. It takes a MySQL query and sends an HTML table via Gmail.
select id, sequence_64 from
(select seq_region_id as id, left(sequence,64) as sequence_64
order by rand()
limit 10) unsorted
order by 1 asc;
dnamail=Bimail('Daily random fruit fly DNA '+datetime.now().strftime('%Y/%m/%d'),['firstname.lastname@example.org','email@example.com'])
dnamail.htmladd('Good morning, find the relevant table below.')
While this example is Gmail specific, it can be easily changed to use any email service. Keep in mind that even when using Gmail you should be able to reach any other email, and if you choose to avoid Gmail altogether, you can just change the bimailer.py to use any other email server.
I recently created a job that calculates some KPIs and writes a txt file that gets picked up as an email body for daily delivery. It was a few lines of text, with the date and kpi value, like the example below
2014-01-16 New Customers: 7 Sold_Items: 15
2014-01-15 New Customers: 6 Sold_Items: 12
2014-01-14 New Customers: 5 Sold_Items: 6
2014-01-13 New Customers: 4 Sold_Items: 8
2014-01-12 New Customers: 3 Sold_Items: 8
2014-01-11 New Customers: 2 Sold_Items: 4
2014-01-10 New Customers: 1 Sold_Items: 3
It was the easiest approach to just concatenate date, customers, items coming from my data source with some strings, but of course it was hard to read. There were several such blocks of text in it, so while the data was there, it was hard to see a trend.
the sql for it went something like:
SELECT concat_ws(' ', date, ' New Customers:', users, ' Sold_Items:', items)
ORDER BY date DESC
INTO OUTFILE 'C:\\folder\\email_kpi.txt' FIELDS TERMINATED BY ';';
Easy, but by far not the best way to deliver an email report.
To properly display this data with the idea in mind that the recipient will have to read and understand it, it must be represented differently.
Best ways are a visual aid, along with a structured format to allow the user to work with the data, so I decided for a chart and a table. Luckily, google charts offers a simple way that allows you to put parameters in an url, which will then return the chart. So I had a go at it, and came up with below.
Note the url is not secure; on the other ahnd, this is not a problem, as you can only access the specific url with the data you put in it. In other words, if you don’t have the data in the first place, you can’t access it. It’s not dynamic, so there’s no possibility of future leaks.
As for the table, a simple html table will do – it allows you to copy paste straight into spreadsheets and keep the formatting, and the simpler the better. Table formatting may vary, it will normally look pretty plain, but some email clients support inline css, so if you have the time, feel free to experiment.
What about the code to create this every day?
I use plain mysql that generates the two lines as text
group_concat(date order by date asc separator'|'),
),/** y axis notch values dinamically according to higest chart value **/
'&chco=044444,099999&chg=16.67,20&chm=N,004040,0,-1,11|N,005050,1,-1,11&chtt=Sold_items',/** line color, numbers color, grid frequency - 20 is 5, 16.67 is 6; title **/
from kpi_tablekorder by date desc limit7
For the google image chart it’s a bit more work to get the vertical limit and the axes to update according to your maximum values, but otherwise pretty straightforward. The easiest way to figure out what you need is in the google playground in the link below. Alternatively you can just change the parameters in the url of the google chart above
If you just wish to try out your PHP and use it locally, I recommend EasyPHP. It is a dev server, so you cannot publish your pages to the web, however I recommend you do not create a webserver from a personal PC anyway, unless you are willing to lose all your local data. You can get the devserver here.
Download and install it, and remember where you install it. If you are using windows, make sure that your windows user has the right to access and modify files at the installation path (Would recommend installing it outside of c://program files)
Changing the default port to avoid clashes with other software:
The default port for your new dev server will be port 80. A lot of other software (even skype) can use that port by default, so I would change it right away before any clashes occur. In the install folder, under binaries/conf_files folder you will find a file called httpd.conf . Open the file in a text editor such as notepad, and look for the text ‘Listen 127.0.0.1:80’ and ‘ServerName 127.0.0.1:80’ . Here we can see the port that we have to change (:80) at the end of the IP. Personally, I like to start from 8079 and go down, as some software has 8080 as default. Change the port to 8079, so now the ip will look like 127.0.0.1:8079 .
Every web server has a root folder for its files, in the case of EasyPhp it will be installfolder\data\localweb . You can create folders there to place your PHP files, and then access them through your browser. For example, I have a ‘charts’ folder, with the file chart.php inside.
I would access by typing 127.0.0.1:8079/charts/chart.php in my address bar. If you want to troubleshoot your file, you can view the source by accessing ‘view-source:127.0.0.1:8079/charts/chart.php’
If you want to make this content accessible online, I bid you not to do so from your local computer. But if you really need to, you can install XAMPP web server. Easyphp is for local access only. I only use it to create files and test them locally, and once they are done I move them to my hosted web server. A host is cheap, so don’t put your personal computer at risk. Besides, most home internet service providers will give you a very limited bandwidth for uploading, so when somebody tries to access your locally hosted webpage, it will load incredibly slow.
While data will most often be used as a tool to assist in making decisions, it sometimes also serves as a motivator. Live dashboards can allow your client to react quickly to any changes in their KPIs, or can assist a sales team in seeing how close they are to their daily targets.
Stick them in fullscreen mode on a wall display or a TV, and they will be there to offer this transparency non stop.
There are quite a few pieces of software out there that allow you to create live, automatically updating, automatically refreshing dashboards, but most of them cost more than it’s worth, and some are quite glitchy. I will not go into these tools now, but will rather offer a very fast and easy alternative.
When looking for this, my first requirement was that the refresh is easy to accomplish and smooth. HTML offers that, so I wanted something that can be wrapped in HTML.
HTML also offers the advantage of being flexible in regards to where you put it: as standalone on a dedicated web page, or embedded in an admin frontend or dashboard panel.
My final result was this, for a daily chart updated every 3 minutes:
Google does not provide any connectors for MySql or other common Sql, and most often that’s where live data will be.
I tried looking around for some resources that will pull the sql data into the chart, but my search was not very fruitful. Google API wants the data in a very specific format, so I took the liberty of writing a little PHP to do the job.
If you are not interested in how this works, just scroll all the way down and copy paste the full code into Notepad or TextEdit and save it as PHP. If you want to edit the code, I use Notepad++ as it highlights the operators.
2. Second part: transforming the data in the right format. We do this with an echo.
// My sql table has the columns Date, Margin, Target, Last month Margin, so I want the lines to //contain summed up values for each day. Except target, which is the monthly target on each row, //to create a horizontal line
round((SELECT SUM(last_month_margin) FROM dummy_value_daily d2 WHERE d1.fulldate>=d2.fulldate),2) AS last_month_margin ,
round(Target,2) AS Target,
round((SELECT SUM(margin) FROM dummy_value_daily d2 WHERE d1.fulldate>=d2.fulldate),2) AS margin
3. Final part: creating the final PHP with the Google API.You can find all the documentation for Google Charts API here
Note the refresh is set to 180 seconds with meta http-equiv="refresh" content="180"The php is run, query pulls data, and only after that is successful, the chart refreshes, so the update will be very smooth to the eye.
<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
To run the PHP you need a dev server, a web server, or someone who can upload it somewhere for you. I will cover how to install a lightweight dev server in a separate post. I recommend EasyPHP dev server if this is all you will ever do with it, alternatively XAMPP is a better option allowing you to publish to web as well. Guide for installing and configuring easyphp here.
So I hope you enjoyed this guide, and that you will find this useful. One final note: Google API has all kinds of charts, and it’s easy to switch between types. You can change this chart to a column chart by changing just one word in the html. Just give it a shot 🙂
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