Hi Tomek
You don't actually need the SQL toolkit (I presume you mean the commercial product, internet connectivity toolkit, by NI?) for connecting and operating on a MySQL database. Below is a link to a similar question I asked a few days back:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=5065000000080000004FC30000&UCATEGORY_0=_318_&UCATEGORY_S=0&USEARCHCONTEXT_QUESTION_0=aleksi+sandqvist&USEARCHCONTEXT_QUESTION_S=0
The french site mentioned in the answer has very good material on connecting to MySQL databases with CVI. It has the libMySQL.fp, that has all the functions (or the most common) functions provided in the MySQL API. It also has instructions on how to take the .fp to use. Hope this helps?
Best regards,
Aleksi
Sandqvist