SQL


What is SQL?

Structured Query Language (SQL) is a highly popular domain specific language (DSL) used to communicate with relational database management systems (RDBMS). SQL is a standard that is based on the "relational model", defined by professor E.F. Codd, of IBM during the 1960's and 1970s. Codd defined both a relational algebra and a relational calculus as foundational models in his endeavor to reinvent database management systems. This led to his seminal 1970 paper "A Relational Model of Data for Large Shared Data Banks". Commonly used implementations of SQL include Oracle, IBM's DB2, Postgres, MySQL, and SQLite. Notably, SQLite is not a client/server system, but rather an embedded database that is used as a core application-level storage system in macOS, iOS, and Android. There has been much debate over what constitutes a "real" relational system, as some widely used database systems famously lacked features that Codd considered foundational to the relational model, such as "foreign keys". The flexibility of SQL has proven so powerful that many non-relational systems (e.g. Apache Spark) have implemented subsets or variants of the language to make it easier for people to draw upon their capabilities.

How much do SQL developers make?

We don't have enough data for Washington D.C.,
so we've calculated your salary information for the San Francisco Bay Area instead:
Based on real Hired interview data, SQL developers in Washington D.C. earn an average annual salary of
Based on real Hired interview data, SQL developers in SF Bay Area earn an average annual salary of
$117,127
The salaries of candidates in this role range from a low of $10,000 to a high of $190,000, with a median salary of $120,000.

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We expect SQL developers to receive 3 Interview Requests on Hired.

SQL Resources

Check out the resources below to continue sharpening your SQL skills

SQL Engineer Jobs

Business Systems Analyst - Supply Chain
Business Systems Analyst - Supply Chain
<p>The Business Systems Analyst, Supply Chain will be responsible for providing business systems analysis support for all systems maintained by the Operations group, this role will be key to the wo...
About PlayStation: PlayStation Now offers online game streaming services. Explore hundreds of PS4, PS3 and PS2 games, including PlayStation exclusives, acclaimed masterpieces, indie gems, and more, with new games add...
Business Systems Analyst - Supply Chain
About PlayStation: PlayStation Now offers online game streaming services. Explore hundreds of PS4, PS3 and PS2 games, including PlayStation exclusives, acclaimed masterpieces, indie gems, and more, with new games add...
Tableau Data Analyst, Junior (Secret Clearance)
Tableau Data Analyst, Junior (Secret Clearance)
About Arc Aspicio: Arc Aspicio is an information technology and management consulting company that focuses on homeland security and intelligence. Arc Aspicio is building a community that promotes collaboration, c...
Tableau Data Analyst, Junior (Secret Clearance)
About Arc Aspicio: Arc Aspicio is an information technology and management consulting company that focuses on homeland security and intelligence. Arc Aspicio is building a community that promotes collaboration, c...
Database Administrator
Database Administrator
201-500 employees
About PowerReviews: A platform to increase product ratings & reviews, site traffic & conversion. Learn more about PowerReviews ratings and review software today!
Database Administrator
201-500 employees
Database Administrator
About PowerReviews: A platform to increase product ratings & reviews, site traffic & conversion. Learn more about PowerReviews ratings and review software today!
Data Engineer
Data Engineer
About Aspiration.com: A financial firm you can fall in love with: banking and investing that puts you and your conscience first.
Data Engineer
About Aspiration.com: A financial firm you can fall in love with: banking and investing that puts you and your conscience first.
CRM/Systems Data Analyst
CRM/Systems Data Analyst
About HotSchedules: Clarifi™ by HotSchedules is a cloud-based intelligent restaurant operating platform that enables great guest experiences through intelligent workflow & insights.
CRM/Systems Data Analyst
About HotSchedules: Clarifi™ by HotSchedules is a cloud-based intelligent restaurant operating platform that enables great guest experiences through intelligent workflow & insights.
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