[Pottus]

%c inserts character 37 which is a percent sign, i'll try your way though just in case.

Edit - Still doesn't work so it's something else Vince even if I write the whole name it will fail with the wildcard character so it's either a SAMP limitation or % is not the wildcard character.

Edit - Solution

It would appear that tutorial was wrong, here is the correct query syntax

format(Query, sizeof(Query), "SELECT `PlayerName` FROM `BannedUsers` Where `PlayerName` LIKE '%s%%'", DB_Escape(text));