It’s a handy way to practice Oracle-specific SQL online. You can write code to create and populate tables and select data from them. Oracle Live SQL is a tool created by Oracle that lets you write and run SQL code against an online Oracle database. It’s a popular resource for people to practice. While it doesn’t have the same flexibility as an online editor like SQLFiddle, it does explain the concepts and includes SQL practice exercises which are helpful. At the end of each page is a sample data set, and several questions you can answer using SQL. SQL Bolt is a site that teaches SQL as well as including several exercises on each concept. There are many different SQL challenges on the site, and each of them has a sample data set, a question to answer with SQL, a list of the submissions, a leaderboard, and discussions.Įxercises are broken down by difficulty and you’re able to write the SQL in DB2, MySQL, Oracle, and SQL Server. HackerRank is a site that allows you to practice your skills in many different languages, and one of the languages provided is SQL. It has a sample database feature, which shows AdventureWorks for SQL Server, and there are many other SQL versions supported: This site is another “fiddle” site where you can enter your sample queries and run them to see the results. So while it doesn’t support Oracle or SQL Server, the versions of MySQL and PostgreSQL are newer than SQL Fiddle. It supports many different versions of SQL: You can sign in to create an account, save your fiddles, and make them public or private. This one is similar to the other fiddles in that it lets you create tables, insert data, and run queries. As of September 2020, you can write SQL for:ĭB-Fiddle is one of two sites called “DB Fiddle”. results, for viewing the results of the queryĪnother great thing about SQL Fiddle is that it supports different versions of SQL.schema, for creating and populating your tables.It’s a common way for users on StackOverflow to generate sample data because the data sets are saved on SQLFiddle and you can generate a link to that data set. SQL Fiddle is a popular site for quickly generating sample databases and writing SQL code on them. It also indicates if the result is correct or not. You can enter the SQL that you think is needed to give the answer that is asked for, submit the SQL, and see the result. It has a large range of practice exercises, from basic SELECT statements to more complicated queries.Įach page has a sample data set and several questions. SQLZoo is a popular site for practising SQL. Sites that show only practice questions or a method to download a database are not on this list. To be added to this list, there must be an interactive component or a way to enter SQL and see a result. Some of them are a simple textbox where you enter an SQL SELECT query on a predefined database, and others allow you to create tables and data to go along with the queries. Each of these websites allow you to practice your SQL queries on a database.
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