# 42. PL/pgSQL - SQL Procedural Language

- [42.1. Overview](/14/server-programming/pl-pgsql-sql-procedural-language/overview.md)
- [42.2. Structure of PL/pgSQL](/14/server-programming/pl-pgsql-sql-procedural-language/structure-of-pl-pgsql.md)
- [42.3. Declarations](/14/server-programming/pl-pgsql-sql-procedural-language/declarations.md)
- [42.4. Expressions](/14/server-programming/pl-pgsql-sql-procedural-language/expressions.md)
- [42.5. 基本語法](/14/server-programming/pl-pgsql-sql-procedural-language/basic-statements.md): 版本：11
- [42.6. Control Structures](/14/server-programming/pl-pgsql-sql-procedural-language/control-structures.md)