Google SQL and database interview questions feature all the time in data science, database management, backend engineering and SQL technical interviews at Google. Given that SQL is used widely in a variety of software jobs, you’re required to know answers to basic SQL interview questions even in software engineering interviews at Google. Most SQL and database interviews typically start off with basic SQL questions, and move medium and query interview questions.
If you’re appearing for a position that requires knowledge of SQL and database management, knowing what type of Google database interview questions are asked is important. To help you prepare, we’ve compiled a list of basic, advanced, and query interview questions.
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Let’s go ahead and look at some Google job interview questions asked at SQL, software engineering, and data-related interviews at Google.
Here’s what we’ll cover:
Google database interview questions, also called Google SQL interview questions, test one’s understanding and ability to manage large-scale databases.
Google database interview questions are typically asked in the following interviews at Google:
Basic Google Database interview questions are mostly asked at junior developer and SQL technical interviews at Google.
Let’s look at some common Google database interview questions and answers that feature at these interviews.
Primary keys in SQL are used to identify records in a table. A primary key can be a column or a group of columns that uniquely identify each row in a table. It is important that database tables have primary keys to identify unique table values.
This is one of the most common Google database interview questions asked in technical interviews.
Subqueries in SQL are queries that are nested within any of the four major SQL statements - SELECT, DELETE, INSERT and UPDATE. Any query nested within a subquery is also considered a subquery in SQL.
Constraints in SQL are a set of rules that are applied to entries in a table. These rules prevent certain data types from being included in tables. Some common SQL constraints include:
Query optimization is the process of choosing the right SQL statements while writing queries to enable quicker outputs and improve system performance.
The four major subsets of SQL include:
Advanced Google database interview questions primarily feature in interviews for data scientists, full stack developers, and data engineers.
Below are some advanced Google database interview questions to give you an idea about the type of questions to expect at your interview.
SQL query interview questions are a part of the advanced Google database interview questions. These questions are commonly asked in SQL technical interviews, senior backend engineering interviews, data engineering interviews and data science interviews.
Query interview questions typically involve using SQL queries to retrieve specific information from datasets, mostly in tabular formats. Let’s look at what Google database interview questions on SQL queries look like.
SQL Query interview questions that feature in Google interviews can be classified into the following categories:
The tables below contain employee-related information including employee name, department, gender, project type and salaries. Write SQL queries to provide outputs for the questions.
Following are the Google SQL interview questions (query-related) that you can expect from the above table.
Practicing these Google database interview questions will stand you in good stead for your next SQL interview at Google.
Q1. In what type of interviews are you asked Google database interview questions?
Google database interview questions are typically asked in SQL developer interviews, software developer interviews, backend interviews, data science, and data engineering interviews.
Q2. What is the average salary of a Google SQL developer in the US?
The average salary of Google SQL developers in the United States is $87,375 per year.
Q3. Do you need to be a good programmer to ace SQL interviews?
Although programming-related questions aren’t asked at SQL interviews, roles that entail SQL knowledge often demand strong programming skills as well.
Q4. What type of Google SQL interview questions are asked in Google’s technical interviews?
Google SQL interview questions asked in Google’s interviews include basic SQL interview questions, Advanced SQL interview questions, and SQL Query interview questions.
Q5. Are Google Database Interview Questions asked in Python developer interviews?
Yes, if you’re applying to backend engineering, cloud computing and data-related roles (data engineering, data science, data analyst), you can expect basic, advanced, and query SQL interview questions at Google’s technical interviews.
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