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	MySQL connection string which holds the server and login information
Input	MySQL_Command	ARRAY [0..gc_MySQL_iStatementMax] OF STRING(gc_MySQL_iStatementLength)	MySQL command
Output	eError	ERROR	Error type
Output	sExecute_State	STRING(200)	Current execute state