escargot | Cargo API written in Paris | DevOps library

So first of all you get the income for each product and category and then based on that you find total income for that category and you do this with the help of subquery, then you join this resultant table with the category table and with the help of group by you find the product count and total income for each category, below is the sql query for more indepth understanding

Using a set this problem can be solved easily:

I would suggest using collections.Counter. This provides a simple an pythonic way to calculate total counts and is provided in the standard lib.

You could use it like this:

use sets and then take the length of the set like bellow:

For this purpose, creating a new table maybe is not what you are looking for! Please review incremental backup solutions like Percona xtrabackup. I don't know why you do this, but maybe I should warn you, if you have some enterprise task, it is not a proper way to check the differences between data in the database layer! You should execute such processes at logic layer (with a proper programming language or scripting tools).

To print the correct i, you should keep track of the index refering to your max/min value. Additionally, put your print*,'..' commands outside the do-loop. Otherwise, it seems that you are just printing all of them.

When you create your new instance your courseName needs to match the name of the key in your _courses object. In your code all of these names are preceded by an underscore so the code breaks.

For example:

I'm not sure if I understood your question correctly, but I assume, that you want to make some calculations based on a selection of dish options. You had multiple severe errors in your code and should definitely study how to code in JavaScript. Here are some mistakes, you made:

• You need to take care about case sensitivity: getelementbyid is not the same as getElementById.
• A function which is an attribute of another variable is not the same as a global function: document.getElementById ≠ getElementById
• Omitting the curly braces after an if statement is dangerous. It will always only affect the upcoming line. Always use curly braces in an if statement. In your case, only the first calculation was made. (if(...) { ... })
• elements do not have a value, only input and radio boxes do have a value. Therefore, you cannot pass this "option" as an argument.
• You tried to bind the value of e.g. Taxes as an option to a function which then evaluates, if it is a dish (Spaghetti etc.). This cannot work like this.
• += is only necessary, if you want to add a number to an existing number. Otherwise, you can simply use =
• You cannot compare anything by using =. This operator is for assigning variables. You need to use == or better ===.
• If you only declare a variable (e.g. using var soustot;) and not initialize it (setting a value to it), its value will be undefined. You cannot add a number to undefined. It will result in a NaN value (not a number).
• The term of returning values from a function is specifically used, if you want to get some output directly as a return value inside JavaScript. You actually want to set some DOM values and not return a value to the caller of the function. For example Math.round(1.643); returns 2 but does not set any DOM properties.

Nevertheless, here you have a working example:

Use innerHTML to change the content of a HTML element.

Moreover, you should use a switch to change options, it's much more efficient than rewriting the same code over and over again.