> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/codesys-hvac/mysql-library/funktionsbausteine/mysql_exec.md).

# MySQL\_Exec

## `MySQL_Exec` (FB)

FUNCTION\_BLOCK MySQL\_Exec EXTENDS CBM.ETrig

**Kurze Beschreibung:**

> Dieser Funktionsbaustein führt einen MySQL-Befehl ohne Rückgabeergebnis aus, wie z. B. INSERT, UPDATE, DELETE, ALTER, DROP usw.

**Detaillierte Beschreibung:**\
Die MySQL-Befehle müssen mit einem Array aufgebaut werden. Die Länge des Arrays wird durch die GLOBALEN KONSTANTEN definiert.\
Die FBox basiert auf dem allgemeinen Verhaltensmodell „Etrig“, sodass Sie den aktuellen Prozesszustand in Ihrer Applikation verarbeiten und anzeigen können.

**Info zu MySQL\_Command:**\
Nicht-numerische SQL-Parameterwerte müssen mit Anführungszeichen (Apostroph = ‚) gekennzeichnet werden.\
Um ein Apostroph innerhalb eines CODESYS-Strings zu verwenden, müssen Sie es mit einem Dollarzeichen plus Apostroph ($‚) oder mit $27 deklarieren.

e.g:

```
MySQL_Command[0] := ‘SELECT * FROM table WHERE name =’
MySQL_Command[1] := ‘$27nonNumberValue$27 ‘;
```

{% hint style="warning" %}
**Achtung:** Maximale Länge für Identifikatoren sind 250 bytes.
{% endhint %}

InOut:

| Scope  | Name               | Type                                                                                        | Comment                                                                        |
| ------ | ------------------ | ------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
| Inout  | `MySQL_Connection` | MySQL\_ConnectionString                                                                     | <p>MySQL connection string which holds the server and login<br>information</p> |
| Input  | `MySQL_Command`    | <p>ARRAY<br>\[0..gc\_MySQL\_iStatementMax]<br>OF<br>STRING(gc\_MySQL\_iStatementLength)</p> | MySQL command                                                                  |
| Output | `eError`           | ERROR                                                                                       | Error type                                                                     |
| Output | `sExecute_State`   | `STRING(200)`                                                                               | Current execute state                                                          |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://support.powerio.com/hub/codesys-hvac/mysql-library/funktionsbausteine/mysql_exec.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.