Count all open incidents per priority (#1819)

* script.js

* readme.md

* Update readme.md

Author: bhavyaa30

Core ServiceNow APIs/GlideAggregate/Count All Open Incidents Per Priority/readme.md

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+# Count Open Incidents per Priority Using GlideAggregate
+
+## Overview
+This script dynamically calculates the **number of open incidents** for each priority level using **server-side scripting** in ServiceNow.  
+Priority levels typically include:  
++ 1 – Critical  
++ 2 – High  
++ 3 – Moderate  
++ 4 – Low  
+
+The solution leverages **GlideAggregate** to efficiently count records grouped by priority. This approach is useful for:  
++ Dashboards  
++ Automated scripts  
++ Business rules  
++ SLA monitoring and reporting  
+
+---
+
+## Table and Fields
++ **Table:** `incident`  
++ **Fields:** `priority`, `state`  

Core ServiceNow APIs/GlideAggregate/Count All Open Incidents Per Priority/script.js

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+(function() {
+    // Create GlideAggregate object on 'incident' table
+    var ga = new GlideAggregate('incident');
+    
+    // Filter only open incidents (state != Closed (7))
+    ga.addQuery('state', '!=', 7);
+    
+    // Group results by priority
+    ga.groupBy('priority');
+    
+    // Count number of incidents per priority
+    ga.addAggregate('COUNT');
+    
+    ga.query();
+    
+    gs.info('Open Incidents by Priority:');
+    
+    while (ga.next()) {
+        var priority = ga.priority.getDisplayValue(); // e.g., Critical, High
+        var count = ga.getAggregate('COUNT');
+        gs.info(priority + ': ' + count);
+    }
+})();