Fixing github issues

Parser.cpp

@@ -581,7 +581,7 @@ tuple<vector<string>, Relation> expression(vector<string> input, DBEngine &engin
 vector<string> showCMD(vector<string> input, DBEngine &engine)
 {
 	
-	if(engine.isRelation(input[0]))
+	if(engine.isRelation(input[0]) && (input[1] != "+" && input[1] != "-" && input[1] != "*"))
 	{
 		engine.getTableFromName(input[0]).display();
 		input.erase(input.begin());
@@ -954,6 +954,7 @@ vector<string> updateCMD(vector<string> input, DBEngine &engine)
 			
 		}
 		
+		
 		// send update command to DBEngine
 	}
 	
@@ -967,36 +968,30 @@ vector<string> deleteCMD(vector<string> input, DBEngine &engine)
 		input.erase(input.begin());
 		input.erase(input.begin());
 		
-		PRelation r(input[0]);
+		Relation rcond = engine.getTableFromName(input[0]);
+		Relation rfinal = engine.getTableFromName(input[0]);
+		
+		input.erase(input.begin());
+		
+		vector<string> s;
 		
 		if(input[0] == "WHERE")
 		{
+			input.erase(input.begin());
 			if(input[0] == "(")
 			{
-				//PCondition c;
+				input.erase(input.begin());
-				
-				PComparison c;
-				POperand oops1;
-				POperand oops2;
-				POp op;
-				
 				while(input[0] != ")")
 				{
-					oops1.setPOperand(input[0]);
+					s.push_back(input[0]);
 					input.erase(input.begin());
-					
-					oops2.setPOperand(input[0]);
-					input.erase(input.begin());
-					
-					op.setPOp(input[0]);
-					input.erase(input.begin());
-					
-					c.setPComparison(oops1.getPOperand(), op.getPOp(), oops2.getPOperand());
 				}
 			}
 		}
 		
+		rcond = condition();
 		// send delete command to DBEngine
+		
 	}
 	else cout<<"Syntax error!"<<endl;
 }