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Learning how to write effective SQL queries is tough especially if you have a tight budget and finding decent resources to help you in practicing SQL online that can cover a wide range of topics is even more difficult.
SQL is an easy programming language that can be learned in a few hours but you should have the right resources to master the concepts. Although it is easy getting familiar with basic SQL concepts, it can be harder getting the real-world experience.
When you are trying to learn SQL queries but you are facing a little difficulty in retaining database concepts then SQLFiddle can be a wonderful choice to go. Moving ahead, let us discuss the Fiddle SQL database testing tool in detail and how it works for you to make the database development task easier. Enroll yourself for a demo session if you want to learn more about SQL.
Read: What is SQL Subquery? Types of Subqueries in SQL
SQL fiddle tool is highly useful for beginners to advanced SQL programmers. Here are the few reasons why should you use it:
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If you are not sure of basic database concepts then SQL Fiddle online website will be quite useful to you. If you are a database developer then here are a few use-cases intended for you.
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The DDL schema can be used to generate the private database on the fly. If anything changed in the DDL (even a single comma) then it is promoted to generate a new schema and you will be operating in a new database.
SQL queries run within a single transaction and get immediately rolled-back once SQL executes. It is because the underlying database structure is the same for all queries that allow it to share the code online anonymously with unlimited users. Once you create the database schema, write queries, unique URLs refer to that particular schema and it is clearly visible in the address bar. This URL can be shared with anyone and they would be able to see what has been completed so far. Also, you can use your normal browser functions like back, forward or reload and observe the different stages of the work as you would expect.
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Here are a few things worth pointing out about the implementation of different databases on SQL Fiddle.
MySQL supports queries that read data from the schema like SELECT query. This database ensures a consistent schema when different users are fiddling with it. The other database options allow a wide range of queries supported in the backend. SQLite runs in the browser and allows you to navigate through different browser options.
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Next, semicolon [;] button is added under each panel that determines how queries can be broken down for each panel before they are sent off to the database. This button pops down the list of different query terminators that are used as a flag to indicate query has ended .
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This terminator indicates how to parse the text before any query is executed. Most of the time , you don’t have to touch this button because its value is generally defined using stored procedures. Be careful while dividing the query into parts as it should be logical otherwise errors are certain if the procedure gets divided into incorrect parts.
SQLite is a special case amongst different databases but it implemented the same way as others with a backend host responsible for the query execution. SQLite allowed for some interesting alternatives that we will discuss below.
Together, these two storage options allow SQLite to run within any browser. If one option does not support any particular browser then switch to another option. You may either get a better browser.
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A web developer, Jake Feasel from Anchorage, Alaska built SQL Fiddle online website in January 2012. He had been answering questions on Stack overflow Q/A site for a long time related to main categories like SQL, jQuery, and Cold Fusion etc.He found JS Fiddle as a wonderful tool to answer JavaScript queries but nothing was available to help SQL developers till the time. So, Jake Feasel was inspired to build something that can help developers with SQL questions. This was the reason why SQLFiddle originated and is considered as a wonderful tool today to assist SQL developers effectively.
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Before you appear for an interview, get familiar with SQL basics and practice SQL problems continuously. When you are sure that you have a decent knowledge of SQL concepts, you may appear for interviews. SQL Fiddle can work as a wonderful asset here for writing queries and practicing SQL online.
Make sure that you are using the best coding practices while coding as bad coding habits may impact your programming career in the future. Above all, have fun, enjoy learning, and follow all the best practices as much as possible.
Read: What Is SQL Queries? List Of All SQL Queries With Examples
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