Sql query formatter code#
Sql query formatter professional#

Avoid abbreviations, but, if you do use them, be sure that they will be understood.

Don't start the name with an underscore.

Use an underscore in a name only if necessary.

(use only letters, numbers, and underscores) Avoid special characters in the name like $, &, *, etc.

The name of an object in a database for a table or a column should be unique and not too long.

If the name is the same as an SQL keyword, enclose the name within quotation marks.

Check that the name is not already used as a keyword in SQL.

The preferred style is different for different relational database systems Some professionals prefer to use what is called CamelCase style instead, for example EmployeeCity.

If the name of the table or column must consist of more than one word, use an underscore to connect them, for example employee_city.

It is better to use employee instead of employees

Avoid the name of a table/column in the plural.

Naming Objectsįirst, I discuss general rules about naming database objects. In this guide, we discuss common and popular rules that are based on this standard.

Sql query formatter code#

In addition, there are many tools that help to format SQL code that are based on this standard. There is not one official document about it, but there are some generally agreed upon standards and good practices written by experts in SQL. But then what if the code has to be read or corrected by people outside of the company? The best solution, in general, is to follow the SQL Formatting Standard. The solution would be to lay out a set of principles for the entire team. The code would represent a mixture of rules in one project. Working in a team would be problematic if every programmer were to write code using their own individual style. This is not bad if you are only working on your own projects, but what if you are working along with other co-workers? They have experience in programming and follow rules that are convenient for them. Some SQL programmers have individual styles and preferences for formatting SQL queries. There are different ways to approach formatting code. OK, now you understand why formatting SQL code might be a good idea. Proper formatting of SQL code helps programmers avoid errors.

The second query is completely different, even though it is exactly the same code - it is easy to read, it would be easy to correct the code, and it would be straightforward to compare with other well-formatted code. If you would like to compare this query to another similar query, it would not be an easy task. Aside from this, it is also a problem to make changes in this code fast. Of course, it is obvious that the first query is not very easy to read. Now compare that with the formatted query below, which is the same code: SELECT p.PersonId,ĭo you see the difference? Which is more readable? Which query is easier to understand? This SQL query above has been written without using any formatting rules. If you think formatting is something that can be safely ignored, look at the code below: SELECT id, FirstName, LASTNAME,c.nAme FROM people p left JOIN cities AS c on c.id=p.cityid Why Is It Worthwhile to Format SQL Code?īeginner SQL programmers often don't pay much attention to formatting their code. In this article, I discuss why this is so important and the basic rules you should follow.

Sql query formatter professional#

Best practices for writing professional SQL code require good formatting skills. Writing queries to a database requires knowledge about SQL syntax, but this is not all you should know.