Merge pull request #104669 from KalyanChanumolu-MSFT/patch-22

(AzureCXP) MicrosoftDocs/azure-docs- Adding new section for reserved keywords

Author: PMEds28

articles/cosmos-db/sql-query-select.md

@@ -164,9 +164,53 @@ The results are:
       }
     }]
 ```
+## Reserved keywords and special characters
+
+If your data contains properties with the same names as reserved keywords such as "order" or "Group" then the queries against these documents will result in syntax errors. You should explicitly include the property in `[]` character to run the query successfully.
+
+For example, here's a document with a property named `order` and a property `price($)` that contains special characters:
+
+```json
+{
+  "id": "AndersenFamily",
+  "order": [
+     {
+         "orderId": "12345",
+         "productId": "A17849",
+         "price($)": 59.33
+     }
+  ],
+  "creationDate": 1431620472,
+  "isRegistered": true
+}
+```
+
+If you run a queries that includes the `order` property or `price($)` property, you will receive a syntax error.
+
+```sql
+SELECT * FROM c where c.order.orderid = "12345"
+```
+```sql
+SELECT * FROM c where c.order.price($) > 50
+```
+The result is:
+
+`
+Syntax error, incorrect syntax near 'order'
+`
+
+You should rewrite the same queries as below:
+
+```sql
+SELECT * FROM c WHERE c["order"].orderId = "12345"
+```
+
+```sql
+SELECT * FROM c WHERE c["order"]["price($)"] > 50
+```
 
 ## Next steps
 
 - [Getting started](sql-query-getting-started.md)
 - [Azure Cosmos DB .NET samples](https://github.com/Azure/azure-cosmos-dotnet-v3)
-- [WHERE clause](sql-query-where.md)
+- [WHERE clause](sql-query-where.md)