The required query is: Select distinct DEPARTMENT from Worker Write an SQL query to fetch unique values of DEPARTMENT from Worker table. The required query is: Select upper(FIRST_NAME) from Worker Write an SQL query to fetch “FIRST_NAME” from Worker table in upper case. The required query is: Select FIRST_NAME AS WORKER_NAME from Worker Write an SQL query to fetch “FIRST_NAME” from Worker table using the alias name as. 50 SQL Query Questions and Answers for Practice. Creating Sample Data to Practice SQL Skill. Once above SQL would run, you’ll see a result similar to the one attached below. (WORKER_REF_ID, WORKER_TITLE, AFFECTED_FROM) VALUES (WORKER_REF_ID, BONUS_AMOUNT, BONUS_DATE) VALUES (WORKER_ID, FIRST_NAME, LAST_NAME, SALARY, JOINING_DATE, DEPARTMENT) VALUES WORKER_ID INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
#Oracle 11g most active tables install
You can also download these Softwares and install them to carry on the SQL exercise. We’ve tested them with MySQL Server 5.7 and MySQL Workbench 6.3.8 query browser. To prepare the sample data, you can run the following queries in your database query executor or on the SQL command line. 50 SQL Query Questions Prepare Sample Data To Practice SQL Skill. 💡 Most Frequently Asked SQL Interview Questions. So if you are interested, then follow the link given below. So first of all, you need to create the test data in your database software.īy the way, we have a bunch of other posts available for SQL interview preparation. You can check out the tables below that we’ve provided for practice. Try to find answers on your own.īut you can’t start until the required sample data is not in place. So you’ll gain real-time experience by going through them.Īlso, we recommend that you first try to form queries by yourself rather than just reading them from the post. Most of the SQL query questions we’ve filtered out of interviews held by top IT MNC like Flipkart and Amazon. So, you can use them to create a test database and tables. We’ve also given SQL scripts to create the test data. That’s why we’ve selected a set of 50 SQL queries that you can use to step up your learning. Solving practice questions is the fastest way to learn any subject. To get you started, we’ve outlined a few SQL query questions in this post. If you want to improve SQL skills, then install a SQL package like MySQL and start practicing with it.
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