Postgres-XC 1.0.4 Documentation
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Chapter 39. PL/Tcl - Tcl Procedural Language

Table of Contents
39.1. Overview
39.2. PL/Tcl Functions and Arguments
39.3. Data Values in PL/Tcl
39.4. Global Data in PL/Tcl
39.5. Database Access from PL/Tcl
39.6. Trigger Procedures in PL/Tcl
39.7. Modules and the unknown Command
39.8. Tcl Procedure Names

Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly.

PL/Tcl is a loadable procedural language for the Postgres-XC database system inherited from PostgreSQL that enables the Tcl language to be used to write functions and trigger procedures.

You can use PL/Tcl in Postgres-XC too.

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