How to RewriteCond ?

RewriteCond %{QUERY_STRING} union [NC,OR]
RewriteCond %{QUERY_STRING} select [NC,OR]
RewriteCond %{QUERY_STRING} truncate [NC,OR]
RewriteCond %{QUERY_STRING} drop [NC,OR]
RewriteCond %{QUERY_STRING} update [NC]


Any ideas ?

Regards, Alexiev