Create README.md

Author: mandeepkaran

GlideFilter/CaseSensitiveSearch/README.md

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+# 🔄 ServiceNow Fix Script: Normalize "prod" Environment Using GlideFilter
+
+## 📌 Problem Statement
+
+In many ServiceNow environments, custom fields like `u_environment` on tables such as `change_request` often contain inconsistent variants of the same logical value, for example:
+
+- `prod`
+- `PROD`
+- `Prod`
+- `PrOd`
+- `pRoD`
+
+These inconsistencies cause:
+- Confusion in reports
+- Broken automation rules
+- Poor data hygiene
+
+This script identifies and normalizes all case-variant values of `"prod"` to a consistent format: `"Prod"`.
+
+---
+
+## 🚀 Solution: Fix Script Using GlideFilter
+
+We use **`GlideFilter`** with **case-sensitive matching** to cleanly and securely identify inconsistent values. This avoids multiple `if` conditions or regular expressions.
+
+---
+
+## ✅ Practical Example
+
+Instead of writing custom logic like this:
+
+```javascript
+var env = gr.u_environment.toString().toLowerCase();
+if (env === 'prod' || env === 'prod ' || env === 'PROD' || env === 'PrOd') {
+    // Normalize
+}
+```
+
+You simply write:
+```javascript
+var filter = new GlideFilter('u_environment=prod', 'envNormalize');
+filter.setCaseSensitive(false);
+if (filter.match(gr, true)) {
+    // Normalize
+}
+```
+
+✅ Cleaner
+✅ ACL-aware
+✅ Easier to maintain
+✅ Consistent with UI filters