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Sql Developer Interview Questions

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Sql Developer Interview Questions

SQL stands for Structured Query Language, and SQL developers create SQL databases and the applications that work with them. They often use design tables and storing procedures for stability, reliability, and performance. In an SQL developer interview, employers often ask questions about your programming knowledge and problem-solving skills.

Top SQL Developer Interview Questions & How to Answer

Question 1

Question #1: What are the types of keys in SQL, and when would you use them?

How to answer
How to answer: This question lets you demonstrate your knowledge of SQL. Discuss the most common types of SQL keys, and talk about how they can identify rows and columns in tables. Keys work as unique identifiers, allowing users to retrieve data easily.
Question 2

Question #2: What are the types of normalization available in SQL, and how do you use them?

How to answer
How to answer: People use SQL normalization to organize data and reduce redundancies. You can demonstrate your experience by discussing the normalization methods you use most. For example, many developers divide a large table into several smaller ones for easier readability.
Question 3

Question #3: What programming languages are you familiar with?

How to answer
How to answer: Many SQL developers also use JavaScript, HTML, Python, PL/SQL, and other languages. Mention the languages you know and how you used them at your previous job. Also, tell the interviewer about any programming certifications you received.

2,215 sql developer interview questions shared by candidates

what is materialized view and why it is required?what is pivot? when to use the non-clustered index and when to use clustered one.what will you do if your database is growing out of size?how to optimize the query or stored proc? how to read execution plan and what steps to take on it? write query which can add row number column for a table? what is partition? diff between temp table and temp table variable? scope of global variable? there are two tables both have only one column which accepts null, both table have 5 rows as 1,1,1,1,null. how many rows will come for inner join, left, right, union and union all on these two tables.(try this on SSMS)? High level design for employee, tasks and timesheet scenario etc
avatar

SQL Server Developer

Interviewed at Fulcrum Worldwide

4.1★
Jan 20, 2014

what is materialized view and why it is required?what is pivot? when to use the non-clustered index and when to use clustered one.what will you do if your database is growing out of size?how to optimize the query or stored proc? how to read execution plan and what steps to take on it? write query which can add row number column for a table? what is partition? diff between temp table and temp table variable? scope of global variable? there are two tables both have only one column which accepts null, both table have 5 rows as 1,1,1,1,null. how many rows will come for inner join, left, right, union and union all on these two tables.(try this on SSMS)? High level design for employee, tasks and timesheet scenario etc

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