diff --git a/public/userarea/statkpi/parsedatachart.php b/public/userarea/statkpi/parsedatachart.php
index 385b3e1..81bfcbf 100644
--- a/public/userarea/statkpi/parsedatachart.php
+++ b/public/userarea/statkpi/parsedatachart.php
@@ -249,17 +249,19 @@ $otherConditions = implode("', '", array_map('addslashes', RATING_OTHER));
 // Query per il grafico a barre orizzontali con sezioni multicolore
 $horizontalBarQuery = "
     SELECT 
-        p.$groupingField AS groupingValue,
+        COALESCE(p.$groupingField, 'empty') AS groupingValue,
         SUM(CASE WHEN UPPER(r.reportsRating) IN ('$passConditions') THEN 1 ELSE 0 END) AS passCount,
         SUM(CASE WHEN UPPER(r.reportsRating) IN ('$failConditions') THEN 1 ELSE 0 END) AS failCount,
         SUM(CASE WHEN UPPER(r.reportsRating) NOT IN ('$passConditions', '$failConditions') THEN 1 ELSE 0 END) AS otherCount
     FROM reports r
     LEFT JOIN products p ON r.idproducts = p.idproducts
     $filters
-    GROUP BY p.$groupingField
+    GROUP BY COALESCE(p.$groupingField, 'empty')
+    LIMIT 20
 ";
 
 
+
 $horizontalBarResult = $conn->query($horizontalBarQuery);
 $horizontalBarData = [];
 while ($row = $horizontalBarResult->fetch_assoc()) {
@@ -274,7 +276,7 @@ while ($row = $horizontalBarResult->fetch_assoc()) {
 // Query per ottenere il conteggio di Pass, Fail e altri dalle analisi
 $horizontalBarAnalysisQuery = "
     SELECT 
-        p.$groupingField AS groupingValue,
+        COALESCE(p.$groupingField, 'empty') AS groupingValue,
         SUM(CASE WHEN UPPER(ap.test_Rating) IN ('PASS', 'P', 'COMPLIES') THEN 1 ELSE 0 END) AS passCount,
         SUM(CASE WHEN UPPER(ap.test_Rating) IN ('FAIL', 'F', 'DOESN\'T COMPLY') THEN 1 ELSE 0 END) AS failCount,
         SUM(CASE WHEN UPPER(ap.test_Rating) NOT IN ('PASS', 'P', 'COMPLIES', 'FAIL', 'F', 'DOESN\'T COMPLY') THEN 1 ELSE 0 END) AS otherCount
@@ -282,9 +284,11 @@ $horizontalBarAnalysisQuery = "
     LEFT JOIN reports r ON ap.idreports = r.idreports
     LEFT JOIN products p ON r.idproducts = p.idproducts
     $filters
-    GROUP BY p.$groupingField
+    GROUP BY COALESCE(p.$groupingField, 'empty')
+    LIMIT 20
 ";
 
+
 $horizontalBarAnalysisResult = $conn->query($horizontalBarAnalysisQuery);
 $horizontalBarAnalysisData = [];
 while ($row = $horizontalBarAnalysisResult->fetch_assoc()) {
@@ -339,7 +343,9 @@ $productBySupplierQuery = "
     FROM products p 
     WHERE p.namesupplier IS NOT NULL $suPfilters 
     GROUP BY p.namesupplier 
-    ORDER BY totalProducts DESC";
+    ORDER BY totalProducts DESC
+    LIMIT 30
+    ";
 
 $productBySupplierResult = $conn->query($productBySupplierQuery);
 $productBySupplier = [];
@@ -450,6 +456,7 @@ $analysisDistributionQuery = "
     $filters
     GROUP BY ap.result_TestName
     ORDER BY totalTests DESC
+    LIMIT 20
 ";