Update app.py

app.py

@@ -26,35 +26,43 @@ def fetch_personalized_data():
     session_index = "eb3636167d3a63fbeee32934610e5b2f"
     print(session_index)
     playerNr = "1"
-    
-    # Query to fetch relevant data from both tables based on session_index
-    query = f"""
-        SELECT 
-            {core_table}.playerNr, 
-            {core_table}.subjectNr, 
-            {core_table}.onPage,
-            {decisions_table}.transfer1,
-            {decisions_table}.tripledAmount1,
-            {decisions_table}.keptForSelf1,
-            {decisions_table}.returned1,
-            {decisions_table}.newCreditRound2,
-            {decisions_table}.transfer2,
-            {decisions_table}.tripledAmount2,
-            {decisions_table}.keptForSelf2,
-            {decisions_table}.returned2,
-            {decisions_table}.resultsWithoutAI
-        FROM {core_table}
-        JOIN {decisions_table} ON 
-            {core_table}.playerNr = {decisions_table}.playerNr AND
-            {core_table}.groupNr = {decisions_table}.groupNr AND
-            {core_table}.subjectNr = {decisions_table}.subjectNr
-        WHERE {decisions_table}.session_index = '{session_index}'
-    """
-    cursor.execute(query)
+
+    try:
+        # Query to fetch relevant data from both tables based on session_index
+        query = f"""
+            SELECT 
+                {core_table}.playerNr, 
+                {core_table}.subjectNr, 
+                {core_table}.onPage,
+                {decisions_table}.transfer1,
+                {decisions_table}.tripledAmount1,
+                {decisions_table}.keptForSelf1,
+                {decisions_table}.returned1,
+                {decisions_table}.newCreditRound2,
+                {decisions_table}.transfer2,
+                {decisions_table}.tripledAmount2,
+                {decisions_table}.keptForSelf2,
+                {decisions_table}.returned2,
+                {decisions_table}.resultsWithoutAI
+            FROM {core_table}
+            JOIN {decisions_table} ON 
+                {core_table}.playerNr = {decisions_table}.playerNr AND
+                {core_table}.groupNr = {decisions_table}.groupNr AND
+                {core_table}.subjectNr = {decisions_table}.subjectNr
+            WHERE {decisions_table}.session_index = '{session_index}'
+        """
+        cursor.execute(query)
+        print(cursor.statement)
+        print("Query executed successfully!")
+    except mysql.connector.Error as err:
+        print(f"Error executing query: {err}")
+    return None
     
     # Fetch all rows and convert to a list of dictionaries
     rows = cursor.fetchall()
-    result = []
+    if not rows:
+        print("No rows found for the given session_index.")
+        return noresult = []
     for row in rows:
         d = {}
         for i, col in enumerate(cursor.description):