PL/pgSQL - SQL Procedural Language

Postgres-XC 1.1 Documentation
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# Chapter 40. PL/pgSQL - SQL Procedural Language

Table of Contents
40.1. Overview
  40.1.1. Advantages of Using PL/pgSQL
  40.1.2. Supported Argument and Result Data Types
40.2. Structure of PL/pgSQL
40.3. Declarations
  40.3.1. Declaring Function Parameters
  40.3.2. `ALIAS`
  40.3.3. Copying Types
  40.3.4. Row Types
  40.3.5. Record Types
  40.3.6. Collation of PL/pgSQL Variables
40.4. Expressions
40.5. Basic Statements
  40.5.1. Assignment
  40.5.2. Executing a Command With No Result
  40.5.3. Executing a Query with a Single-row Result
  40.5.4. Executing Dynamic Commands
  40.5.5. Obtaining the Result Status
  40.5.6. Doing Nothing At All
40.6. Control Structures
  40.6.1. Returning From a Function
  40.6.2. Conditionals
  40.6.3. Simple Loops
  40.6.4. Looping Through Query Results
  40.6.5. Looping Through Arrays
  40.6.6. Trapping Errors
40.7. Cursors
  40.7.1. Declaring Cursor Variables
  40.7.2. Opening Cursors
  40.7.3. Using Cursors
  40.7.4. Looping Through a Cursor's Result
40.8. Errors and Messages
40.9. Trigger Procedures
40.10. PL/pgSQL Under the Hood
  40.10.1. Variable Substitution
  40.10.2. Plan Caching
40.11. Tips for Developing in PL/pgSQL
40.12. Porting from Oracle PL/SQL
  40.12.1. Porting Examples
  40.12.2. Other Things to Watch For
  40.12.3. Appendix

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