[Calisthenics]

You execute query and delete cache. You never retrieve data with cache functions.

R33: https://sampwiki.blast.hk/wiki/MySQL/R3..._field_content
R40: https://sampwiki.blast.hk/wiki/MySQL#cache_get_value_name

If you want only the name of each member, add it in column list for SELECT query. Do not use *