The SQL support in solidDB is comparable to any advanced SQL-based system; solidDB offers the most common SQL features and a set of useful extensions that use solidDB-specific (nonstandard) SQL syntax. Procedural SQL extensions such as stored procedures, stored functions, and triggers enable you to move parts of the application logic into the database. These extensions help reduce network traffic and so improve performance.

solidDB also supports both internal and external user-defined stored functions and procedures. External functions and procedures can be written in the C programming language and used as migration tools or to provide additional functionality.