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 New York,
so we've calculated your salary information for the San Francisco Bay Area instead:
Based on real Hired interview data, SQL developers in New York earn an average annual salary of
Based on real Hired interview data, SQL developers in SF Bay Area earn an average annual salary of
$149,140
The salaries of candidates in this role range from a low of $60,000 to a high of $250,000, with a median salary of $150,000.

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We expect SQL developers to receive 4 Interview Requests on Hired.

SQL Resources

Check out the resources below to continue sharpening your SQL skills

SQL Engineer Jobs

Senior Big Data Engineer -- Burlington, MA
Senior Big Data Engineer -- Burlington, MA
Sr. Engineer - Product development<br><br>TTEC's Insights Platform is a cloud-based customer data platform that provides brands with a 360° view of their customers' needs, behaviors, and preference...
Senior Big Data Engineer -- Burlington, MA
Senior Big Data Engineer -- Burlington, MA
Sr. Engineer - Product development<br><br>TTEC's Insights Platform is a cloud-based customer data platform that provides brands with a 360° view of their customers' needs, behaviors, and preference...
Big Data Engineer
Big Data Engineer
501-1000 employees
Integral Ad Science (IAS) is a global technology and data company that builds verification, optimization, and analytics solutions for the advertising industry and we're looking for a Data Engineer ...
About Integral Ad Science: Integral Ad Science (IAS) is a global technology and data company that builds verification, optimization, and analytics solutions to empower the advertising industry.
Big Data Engineer
501-1000 employees
Big Data Engineer
Integral Ad Science (IAS) is a global technology and data company that builds verification, optimization, and analytics solutions for the advertising industry and we're looking for a Data Engineer ...
About Integral Ad Science: Integral Ad Science (IAS) is a global technology and data company that builds verification, optimization, and analytics solutions to empower the advertising industry.
Applications Analyst IV
Applications Analyst IV
About Avaya<br><br>Avaya enables the mission critical, real-time communication applications of the world's most important operations. As a global leader in delivering superior communications experi...
Applications Analyst IV
Applications Analyst IV
About Avaya<br><br>Avaya enables the mission critical, real-time communication applications of the world's most important operations. As a global leader in delivering superior communications experi...
Infrastructure Member Services (Data Architect) - Advisor
Infrastructure Member Services (Data Architect) - Advisor
Job Description<br><br>Ready to take your Architecture and Infrastructure Strategy (Data Architect) skill set to the next level with a Fortune 7 Company? Check out this opportunity with CVS Health!...
Infrastructure Member Services (Data Architect) - Advisor
Infrastructure Member Services (Data Architect) - Advisor
Job Description<br><br>Ready to take your Architecture and Infrastructure Strategy (Data Architect) skill set to the next level with a Fortune 7 Company? Check out this opportunity with CVS Health!...
Application Support Analyst
Application Support Analyst
5001+ employees
Application Support Analyst<br><br>Req #: 222974<br><br>Location: Arlington, VA US<br><br>Job Category: Information Technology<br><br>Minimum Security Clearance: Secret<br><br>Job Description<br><b...
About CACI: CACI International is a provider of information solutions and services in support of national security missions and government transformation for intelligence, defense, and federal civilian customers.
Application Support Analyst
5001+ employees
Application Support Analyst
Application Support Analyst<br><br>Req #: 222974<br><br>Location: Arlington, VA US<br><br>Job Category: Information Technology<br><br>Minimum Security Clearance: Secret<br><br>Job Description<br><b...
About CACI: CACI International is a provider of information solutions and services in support of national security missions and government transformation for intelligence, defense, and federal civilian customers.
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