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PostgreSQL 8.3.23 Documentation
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Chapter 38. PL/pgSQL - SQL Procedural Language

Table of Contents

38.1. Overview

38.1.1. Advantages of Using PL/pgSQL
38.1.2. Supported Argument and Result Data Types

38.2. Structure of PL/pgSQL

38.3. Declarations

38.3.1. Aliases for Function Parameters
38.3.2. Copying Types
38.3.3. Row Types
38.3.4. Record Types
38.3.5. RENAME

38.4. Expressions

38.5. Basic Statements

38.5.1. Assignment
38.5.2. Executing a Command With No Result
38.5.3. Executing a Query with a Single-Row Result
38.5.4. Executing Dynamic Commands
38.5.5. Obtaining the Result Status
38.5.6. Doing Nothing At All

38.6. Control Structures

38.6.1. Returning From a Function
38.6.2. Conditionals
38.6.3. Simple Loops
38.6.4. Looping Through Query Results
38.6.5. Trapping Errors

38.7. Cursors

38.7.1. Declaring Cursor Variables
38.7.2. Opening Cursors
38.7.3. Using Cursors

38.8. Errors and Messages

38.9. Trigger Procedures

38.10. PL/pgSQL Under the Hood

38.10.1. Variable Substitution
38.10.2. Plan Caching

38.11. Tips for Developing in PL/pgSQL

38.12. Porting from Oracle PL/SQL

38.12.1. Porting Examples
38.12.2. Other Things to Watch For
38.12.3. Appendix

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