diff --git a/src/main/java/org/gcube/dataaccess/databases/utils/DatabaseManagement.java b/src/main/java/org/gcube/dataaccess/databases/utils/DatabaseManagement.java
index d0ee983..5f73284 100644
--- a/src/main/java/org/gcube/dataaccess/databases/utils/DatabaseManagement.java
+++ b/src/main/java/org/gcube/dataaccess/databases/utils/DatabaseManagement.java
@@ -1101,17 +1101,23 @@ public class DatabaseManagement {
 							
 							out.write(parsed);
 							out.newLine();
+							
+							// to add a row to the map
+							if (row.length ==1){
+								RowString = parsed;	
+							}else{
+								RowString = RowString + "," + parsed;
+							}
 
 							// to add a row to the map
-							RowString = RowString + "," + parsed;
+//							RowString = RowString + "," + parsed;
 							// mapSampleTableResult.put(String.valueOf(i),
 							// RowString);
 
 							// // check value row
-							//
-							// AnalysisLogger.getLogger().debug(
-							// "writing the value: " + RowString + " key: "
-							// + String.valueOf(i));
+//							 AnalysisLogger.getLogger().debug(
+//							 "writing the value: " + RowString + " key: "
+//							 + String.valueOf(i));
 
 							// mapResult.put(Integer.valueOf(i), RowString);
 							mapResult.put(String.valueOf(i), RowString);
@@ -1119,44 +1125,45 @@ public class DatabaseManagement {
 						}
 
 					}
-				} else if (result.size() == 1) {
-
-					// Object RowElement = (Object) result.get(0);
-
-					if (row[0] == null) {
-						row[0] = "";
-					}
-
-					// to parse the obtained results in order to align
-					// number
-					// values with those of postgres
-					String original = row[0].toString();
-
-					// // check value
-					// AnalysisLogger.getLogger().debug(
-					// "In DatabaseManagement->original value: "
-					// + original);
-
-					String parsed = "" + row[0];
-
-					if (original != "") {
-						// convert database datatypes to Java datatypes
-						if (DataTypeColumns == null
-								|| DataTypeColumns.size() == 0)
-							parsed = convertToJavaType(row[0].getClass()
-									.getName(), parsed);
-						else
-							parsed = convertToJavaType(DataTypeColumns.get(0),
-									parsed);
-					}
-
-					out.write(row[0].toString());
-					out.newLine();
-
-					// to add a row to the map
-					mapResult.put(String.valueOf(i), row[0].toString());
-
-				}
+				} 
+//				else if (result.size() == 1) {
+//
+//					// Object RowElement = (Object) result.get(0);
+//
+//					if (row[0] == null) {
+//						row[0] = "";
+//					}
+//
+//					// to parse the obtained results in order to align
+//					// number
+//					// values with those of postgres
+//					String original = row[0].toString();
+//
+//					// // check value
+//					// AnalysisLogger.getLogger().debug(
+//					// "In DatabaseManagement->original value: "
+//					// + original);
+//
+//					String parsed = "" + row[0];
+//
+//					if (original != "") {
+//						// convert database datatypes to Java datatypes
+//						if (DataTypeColumns == null
+//								|| DataTypeColumns.size() == 0)
+//							parsed = convertToJavaType(row[0].getClass()
+//									.getName(), parsed);
+//						else
+//							parsed = convertToJavaType(DataTypeColumns.get(0),
+//									parsed);
+//					}
+//
+//					out.write(row[0].toString());
+//					out.newLine();
+//
+//					// to add a row to the map
+//					mapResult.put(String.valueOf(i), row[0].toString());
+//
+//				}
 
 			}