# 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 constructed 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 about MySQL\_Command:**\
Non-numeric SQL parameter values must be quoted (apostrophe = ').\
To use an apostrophe inside 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 ';
```

**Caution:** Maximum length for identifiers are 250 bytes.

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                                                          |