How to remove duplicate records
Sql Developer Interview Questions
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.
2,209 sql developer interview questions shared by candidates
find top 10 employee by using DENSE RANK.? SELECT 10 FROM DUAL MINUS SELECT 5 FROM DUAL.? Query for deleting duplicate rows. Write a procedure to store all the data from a table to a collection table.
What's the types of joints？How to create a table?
Q1: What are triggers? Q2: what are joins and state its types? Q3: What is View?Can we insert, update, delete on view? Q4: What are Aggregate functions?
Calculate the no of exp of the employees from the joining date from table?
Q: If at 5pm on Friday you received a request from stakeholder for report etc how would you deal with this.
What is Insert in DBMS.
What is lazy writer.?
how to find out 1st highest salary
Out of n records the query to pickup 3 to 8 records from a table?
Viewing 21 - 30 interview questions