Add GlideReport for comparing 2 records

Author: Rajasree2004

Core ServiceNow APIs/GlideRecord/Compare_2_records/README.md

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+# Compare Two Records Using GlideRecord
+
+This snippet compares two records from the same table in ServiceNow field-by-field using the **GlideRecord API**.  
+It’s useful for debugging, verifying data after imports, or checking differences between two similar records.
+
+---
+
+## Working 
+The script:
+1. Retrieves two records using their `sys_id`.
+2. Iterates over all fields in the record.
+3. Logs any fields where the values differ.
+
+---
+
+## Usage
+Run this script in a **Background Script** or **Fix Script**:
+
+```js
+compareRecords('incident', 'sys_id_1_here', 'sys_id_2_here');
+```
+
+## Example Output
+```js
+short_description: "Printer not working" vs "Printer offline"
+state: "In Progress" vs "Resolved"
+priority: "2" vs "3"
+Comparison complete.
+```

Core ServiceNow APIs/GlideRecord/Compare_2_records/compareRecords.js

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+/**
+ * Compare two records in a ServiceNow table field-by-field.
+ * Logs all field differences between the two records.
+ *
+ * Usage:
+ * compareRecords('incident', 'sys_id_1_here', 'sys_id_2_here');
+ */
+
+function compareRecords(table, sys_id1, sys_id2) {
+    var rec1 = new GlideRecord(table);
+    var rec2 = new GlideRecord(table);
+
+    if (!rec1.get(sys_id1) || !rec2.get(sys_id2)) {
+        gs.error('One or both sys_ids are invalid for table: ' + table);
+        return;
+    }
+
+    var fields = rec1.getFields();
+    gs.info('Comparing records in table: ' + table);
+
+    for (var i = 0; i < fields.size(); i++) {
+        var field = fields.get(i);
+        var fieldName = field.getName();
+        var val1 = rec1.getValue(fieldName);
+        var val2 = rec2.getValue(fieldName);
+
+        if (val1 != val2) {
+            gs.info(fieldName + ': "' + val1 + '" vs "' + val2 + '"');
+        }
+    }
+
+    gs.info('Comparison complete.');
+}
+
+// Example call
+compareRecords('incident', 'sys_id_1_here', 'sys_id_2_here');