Chapter 38. Event Triggers

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Chapter 38. Event Triggers
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Table of Contents

38.1. Overview of Event Trigger Behavior

38.1.1. login
38.1.2. ddl_command_start
38.1.3. ddl_command_end
38.1.4. sql_drop
38.1.5. table_rewrite
38.1.6. Event Triggers in Aborted Transactions
38.1.7. Creating Event Triggers

38.2. Writing Event Trigger Functions in C

38.3. A Complete Event Trigger Example

38.4. A Table Rewrite Event Trigger Example

38.5. A Database Login Event Trigger Example

To supplement the trigger mechanism discussed in Chapter 37, PostgreSQL also provides event triggers. Unlike regular triggers, which are attached to a single table and capture only DML events, event triggers are global to a particular database and are capable of capturing DDL events.

Like regular triggers, event triggers can be written in any procedural language that includes event trigger support, or in C, but not in plain SQL.

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37.4. A Complete Trigger Example	Home	38.1. Overview of Event Trigger Behavior

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