Update DBEngine.cpp

DBEngine.cpp

@@ -3,7 +3,7 @@
 using namespace std;
 
 DBEngine::DBEngine(){
-	//
+	//
 }
 
 //create a new table in memory
@@ -42,10 +42,26 @@ void DBEngine::selectQuery(){
 }
 
 //return a subset of attributes (columns)
-void DBEngine::projectQuery(){
+/*
-	//
+vector<string> DBEngine::projectQuery(Relation table, string query){
+	
+	/*
+		So basically this is what's going on:
+		- Take the table to iterate through, this is the relation (input 1)
+		- Take a string that will be used for the program to search for in the attributes (input 2)
+		- Iterate through each attribute until the attribute (string) matches the input query
+		- For every iterator, have a counter that counts how many attributes are skipped over in the vector until the attribute is found
+		- This counter will be used to iterate through each vector (row) in the list, skip over that many attributes, and push that into a result vector
+		- Once all vector's elements at the specified attribute are pushed back, return the result vector
+	
+	
+	for(int i = 0; i < table.getSize(); i++) {
+		
+		
+	}
+	
 }
-
+*/
 //each row in the first table is paired with all the rows in the second table
 void DBEngine::productQuery(){
 	//