Used for hiring
Experience working in a development environment like Oracle SQL Developer
A good understanding of Bash or Windows batch scripts
Hands-on-experience with production databases
Experience with reporting and business intelligence tools like MS SQL Server Reporting Services (SSRS) and SAP Crystal Reports
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MySQL tables, data types, indexes, and views
data handling and error handling
“Based on the following tables, what is the output of the SQL query:
SL No PID NAME
1 200 Sony
2 300 Microsoft
3 400 Apple
SQL > SELECT PID FROM PRODUCT1 UNION ALL SELECT PID
FROM PRODUCT2 ORDER BY PID;
- 100 200 300 400
- 100 200 200 300 400 400Correct Answer
- 200 300 400 100
- 400 300 200 100
In MySQL, which of these is used to drop the existing primary key from the table department created with the combination of the columns sel_id and city_id?
- "MODIFY TABLE department DROP PRIMARY KEY(sel_id ,city_id); "
- "UPDATE TABLE department DROP PRIMARY KEY(sel_id ,city_id); "
- "ALTER TABLE department DROP PRIMARY KEY(sel_id ,city_id); "Correct Answer
- "ALTER TABLE department ADD PRIMARY KEY(sel_id ;city_id); "
In MySQL, assume that you have the following tables PET and COLOR:
Which of these queries will you use to output the following table as the result:
petType petType petName petColor
Unicorn Horse Unicorn White
Unicorn Horse Unicorn Silver
- "SELECT * FROM Pet RIGHT JOIN Color ON Pet.petName=Color.petName"Correct Answer
- "SELECT * FROM Pet LEFT JOIN Color ON Pet.petName=Color.petName "
- SELECT * FROM Pet,Color WHERE Pet.petName = Color.petName
- None of these
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