PostgreSQL: Documentation: 17: Chapter 42. PL/Tcl

September 4, 2025: PostgreSQL 18 RC 1 Released!

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Chapter 42. PL/Tcl — Tcl Procedural Language
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Chapter 42. PL/Tcl — Tcl Procedural Language

Table of Contents

42.1. Overview
42.2. PL/Tcl Functions and Arguments
42.3. Data Values in PL/Tcl
42.4. Global Data in PL/Tcl
42.5. Database Access from PL/Tcl
42.6. Trigger Functions in PL/Tcl
42.7. Event Trigger Functions in PL/Tcl
42.8. Error Handling in PL/Tcl
42.9. Explicit Subtransactions in PL/Tcl
42.10. Transaction Management
42.11. PL/Tcl Configuration
42.12. Tcl Procedure Names

PL/Tcl is a loadable procedural language for the PostgreSQL database system that enables the Tcl language to be used to write PostgreSQL functions and procedures.

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41.13. Porting from Oracle PL/SQL	Home	42.1. Overview

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