You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: check_query_string.rb
    path of file: ./repos/powerstation/powerstation/IDE_plugin/out/production/resources/static-analyzer/controller_model_analysis
    
    the code of the file until where you have to start completion: $query_words_exact_match = ["DESC","ASC","JOIN","ON","AND","OR","NOT","IN","NULL","EXIST","UPDATE","INSERT","SELECT","LIMIT","GROUP","ORDER","LIKE"]
$query_words_include = ["SUM","MIN","MAX","COUNT"]
    
def check_scope_query_string(query_node)
	contain_query_string = false
	if query_node.getInstr.getCallHandler
		func_str = query_node.getInstr.getCallHandler.getFuncName
		addQueryFuncHash(func_str)
		str = query_node.getInstr.getCallHandler.query_string
		if str
			chs = str.split(" ")
			chs.each do |c|
				if $query_words_exact_match.include?(c)
					if $query_word_count[c] == nil
						$query_word_count[c] = 0
					end
					$query_word_count[c] += 1
					contain_query_string = true
				end