# MySQL\_Exec

## `MySQL_Exec` (FB)

FUNCTION\_BLOCK MySQL\_Exec EXTENDS CBM.ETrig

**Short description:**

> This function block executes a MySQL command without a return result, such as INSERT, UPDATE, DELETE, ALTER, DROP, etc.

**Detailed description:**\
The MySQL commands must be built with an array. The length of the array is defined by the GLOBAL CONSTANTS.\
The FBox is based on the general behavior model “Etrig”, so you can process and display the current process state in your application.

**Info on MySQL\_Command:**\
Non-numeric SQL parameter values must be marked with quotation marks (apostrophe = ‚).\
To use an apostrophe within a CODESYS string, you must declare it with a dollar sign plus apostrophe ($‚) or with $27.

e.g:

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

{% hint style="warning" %}
**Attention:** Maximum length for identifiers is 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                                                          |