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The Developer’s Guide to the Force.com Platform by Phil Choi, Andrew Fawcett, Glen Martin, Rick Greenwald

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SOQL

As a developer, you are no doubt already familiar with some query languages. The most common query language is SQL, or Standard Query Language, the universal standard for interacting with relational databases.

Just as the Force Platform data repository is similar to a relational database, SOQL is similar to SQL. In most places where there is overlapping functionality, the syntax for SOQL is identical to SQL. But there are a few important differences between the two data access languages.

  • SOQL is a query-only language – SQL has syntax for both reading and writing data, while SOQL is only used to retrieve records from your Force Platform objects. Later in this chapter, you will learn about how to write data using Apex data manipulation language. ...

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