[Konstantinos]

Tutorials for threaded queries: https://sampforum.blast.hk/showthread.php?tid=337810
Wiki for MySQL R33+ (all functions): https://sampwiki.blast.hk/wiki/MySQL/R33
Example script: https://github.com/pBlueG/SA-MP-MySQ...stem-cache.pwn

Read those (especially the example script) and try converting it - you should be able to!