Articles
http://www.softwaretestinghelp.com/50-popular-sql-interview-questions-for-testers/
http://www.softwaretestinghelp.com/31-best-database-testing-interview-questions-and-answers-for-qa-testers/
https://www.guru99.com/database-testing-interview-questions.html
http://www.gcreddy.com/2014/07/sql-interview-questions-and-answers.html
http://www.java67.com/2013/04/10-frequently-asked-sql-query-interview-questions-answers-database.html
http://www.softwaretestinghelp.com/50-popular-sql-interview-questions-for-testers/
http://www.softwaretestinghelp.com/31-best-database-testing-interview-questions-and-answers-for-qa-testers/
https://www.guru99.com/database-testing-interview-questions.html
http://www.gcreddy.com/2014/07/sql-interview-questions-and-answers.html
http://www.java67.com/2013/04/10-frequently-asked-sql-query-interview-questions-answers-database.html