Merge pull request #209688 from seesharprun/patch-2

Cosmos DB | Updated SQL query INDEX_OF code samples

Author: BCS2022

articles/cosmos-db/sql/sql-query-index-of.md

@@ -5,49 +5,62 @@ author: ginamr
 ms.service: cosmos-db
 ms.subservice: cosmosdb-sql
 ms.topic: conceptual
-ms.date: 09/13/2019
+ms.date: 08/30/2022
 ms.author: girobins
 ms.custom: query-reference
 ---
+
 # INDEX_OF (Azure Cosmos DB)
+
 [!INCLUDE[appliesto-sql-api](../includes/appliesto-sql-api.md)]
 
- Returns the starting position of the first occurrence of the second string expression within the first specified string expression, or -1 if the string is not found.  
-  
+Returns the starting position of the first occurrence of the second string expression within the first specified string expression, or `-1` if the string isn't found.
+
 ## Syntax
-  
+
 ```sql
-INDEX_OF(<str_expr1>, <str_expr2> [, <numeric_expr>])  
-```  
-  
+INDEX_OF(<str_expr1>, <str_expr2> [, <numeric_expr>])
+```
+
 ## Arguments
-  
-*str_expr1*  
-   Is the string expression to be searched.  
-  
-*str_expr2*  
-   Is the string expression to search for.  
+
+*str_expr1*
+   Is the string expression to be searched.
+
+*str_expr2*
+   Is the string expression to search for.
 
 *numeric_expr*
-   Optional numeric expression that sets the position the search will start. The first position in *str_expr1* is 0. 
-  
+   Optional numeric expression that sets the position the search will start. The first position in *str_expr1* is 0.
+
 ## Return types
-  
-  Returns a numeric expression.  
-  
+
+Returns a numeric expression.
+
 ## Examples
-  
-  The following example returns the index of various substrings inside "abc".  
-  
+
+The following example returns the index of various substrings inside "abc".
+
 ```sql
-SELECT INDEX_OF("abc", "ab") AS i1, INDEX_OF("abc", "b") AS i2, INDEX_OF("abc", "c") AS i3 
-```  
-  
- Here is the result set.  
-  
+SELECT
+    INDEX_OF("abc", "ab") AS index_of_prefix,
+    INDEX_OF("abc", "b") AS index_of_middle,
+    INDEX_OF("abc", "c") AS index_of_last,
+    INDEX_OF("abc", "d") AS index_of_missing
+```
+
+Here's the result set.
+
 ```json
-[{"i1": 0, "i2": 1, "i3": -1}]  
-```  
+[
+  {
+    "index_of_prefix": 0,
+    "index_of_middle": 1,
+    "index_of_last": 2,
+    "index_of_missing": -1
+  }
+]
+```
 
 ## Next steps