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Chapter 43. PL/pgSQL — SQL Procedural Language
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Chapter 43. PL/pgSQL — SQL Procedural Language

Table of Contents

43.1. Overview
43.1.1. Advantages of Using PL/pgSQL
43.1.2. Supported Argument and Result Data Types
43.2. Structure of PL/pgSQL
43.3. Declarations
43.3.1. Declaring Function Parameters
43.3.2. ALIAS
43.3.3. Copying Types
43.3.4. Row Types
43.3.5. Record Types
43.3.6. Collation of PL/pgSQL Variables
43.4. Expressions
43.5. Basic Statements
43.5.1. Assignment
43.5.2. Executing SQL Commands
43.5.3. Executing a Command with a Single-Row Result
43.5.4. Executing Dynamic Commands
43.5.5. Obtaining the Result Status
43.5.6. Doing Nothing At All
43.6. Control Structures
43.6.1. Returning from a Function
43.6.2. Returning from a Procedure
43.6.3. Calling a Procedure
43.6.4. Conditionals
43.6.5. Simple Loops
43.6.6. Looping through Query Results
43.6.7. Looping through Arrays
43.6.8. Trapping Errors
43.6.9. Obtaining Execution Location Information
43.7. Cursors
43.7.1. Declaring Cursor Variables
43.7.2. Opening Cursors
43.7.3. Using Cursors
43.7.4. Looping through a Cursor's Result
43.8. Transaction Management
43.9. Errors and Messages
43.9.1. Reporting Errors and Messages
43.9.2. Checking Assertions
43.10. Trigger Functions
43.10.1. Triggers on Data Changes
43.10.2. Triggers on Events
43.11. PL/pgSQL under the Hood
43.11.1. Variable Substitution
43.11.2. Plan Caching
43.12. Tips for Developing in PL/pgSQL
43.12.1. Handling of Quotation Marks
43.12.2. Additional Compile-Time and Run-Time Checks
43.13. Porting from Oracle PL/SQL
43.13.1. Porting Examples
43.13.2. Other Things to Watch For
43.13.3. Appendix
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