---
title: "Data Values in PL/Tcl"
id: pltcl-data
pg_version: "20devel"
---

<a id="pltcl-data"></a>

## 42.3. Data Values in PL/Tcl

The argument values supplied to a PL/Tcl function's code are simply the input arguments converted to text form (just as if they had been displayed by a `SELECT` statement). Conversely, the `return` and `return_next` commands will accept any string that is acceptable input format for the function's declared result type, or for the specified column of a composite result type.