Update enable-compression-on-a-table-or-index.md

Author: pmasl

docs/relational-databases/data-compression/enable-compression-on-a-table-or-index.md

@@ -28,7 +28,7 @@ monikerRange: ">= aps-pdw-2016 || = azuresqldb-current || = azure-sqldw-latest |
 
 [!INCLUDE[SQL Server Azure SQL Database Synapse Analytics PDW ](../../includes/applies-to-version/sql-asdb-asdbmi-asa-pdw.md)]
 
-This article describes how to enable [data compression](../../relational-databases/data-compression/data-compression.md) on a table or index in [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] by using [!INCLUDE[ssManStudioFull](../../includes/ssmanstudiofull-md.md)] or [!INCLUDE[tsql](../../includes/tsql-md.md)].
+This article describes how to enable [data compression](../../relational-databases/data-compression/data-compression.md) on an existing table or index in [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] by using [!INCLUDE[ssManStudioFull](../../includes/ssmanstudiofull-md.md)] or [!INCLUDE[tsql](../../includes/tsql-md.md)]. To enable data compression when creating a table or index, see the [Create a compressed index](../../t-sql/statements/create-index-transact-sql.md#l-create-a-compressed-index) and [Creating a table that uses row compression](../../t-sql/statements/create-table-transact-sql.md#n-creating-a-table-that-uses-row-compression) examples.
 
  **In this article**  
 
@@ -53,11 +53,13 @@ This article describes how to enable [data compression](../../relational-databas
 -   If the table is a heap, the rebuild operation for ONLINE mode will be single threaded. Use OFFLINE mode for a multi-threaded heap rebuild operation. Rebuild operations are OFFLINE unless you specify the ONLINE option. For complete information on performing an ONLINE rebuild, see [Perform Index Operations Online](../indexes/perform-index-operations-online.md).
 
 -   You cannot change the compression setting of a single partition if the table has nonaligned indexes.  
+
+-   Several data types are not affected by data compression. For more detail, see [How row compression affects storage](../../relational-databases/data-compression/row-compression-implementation.md#how-row-compression-affects-storage).
 
 ###  <a name="Security"></a> Security  
 
 ####  <a name="Permissions"></a> Permissions  
- Requires ALTER permission on the table or index.  
+ Requires `ALTER` permission on the table or index.  
 
 ##  <a name="SSMSProcedure"></a> Using SQL Server Management Studio  
 
@@ -210,7 +212,7 @@ In SQL Server, run `sp_estimate_data_compression_savings` and then enable compre
 3.  Copy and paste the following example into the query window and select **Execute**. The example first executes the stored procedure `sp_estimate_data_compression_savings` to return the estimated size of the object if it were to use the ROW compression setting. The example then enables ROW compression on all partitions in the specified table.  
 
     ```sql  
-    USE AdventureWorks2012;  
+    USE AdventureWorks2016;  
     GO  
     EXEC sp_estimate_data_compression_savings 'Production', 'TransactionHistory', NULL, NULL, 'ROW' ;  
 
@@ -258,7 +260,7 @@ Azure SQL Database does not support the `sp_estimate_data_compression_savings` s
 3.  Copy and paste the following example into the query window and select **Execute**. The example enables ROW compression on all partitions in the specified table.  
 
     ```sql  
-    USE AdventureWorks2012;  
+    USE AdventureWorks2016;  
     GO  
 
     ALTER TABLE Production.TransactionHistory REBUILD PARTITION = ALL  
@@ -275,7 +277,7 @@ Azure SQL Database does not support the `sp_estimate_data_compression_savings` s
 3.  Copy and paste the following example into the query window and select **Execute**. The example first queries the `sys.indexes` catalog view to return the name and `index_id` for each index on the `Production.TransactionHistory` table. Finally, the example rebuilds index ID 2 (`IX_TransactionHistory_ProductID`), specifying PAGE compression.  
 
     ```sql  
-    USE AdventureWorks2012;   
+    USE AdventureWorks2016;   
     GO  
     SELECT name, index_id  
     FROM sys.indexes  
@@ -289,6 +291,7 @@ Azure SQL Database does not support the `sp_estimate_data_compression_savings` s
 
 ## See Also  
  [Data Compression](../../relational-databases/data-compression/data-compression.md)   
- [sp_estimate_data_compression_savings &#40;Transact-SQL&#41;](../../relational-databases/system-stored-procedures/sp-estimate-data-compression-savings-transact-sql.md)  
-  
+ [sp_estimate_data_compression_savings &#40;Transact-SQL&#41;](../../relational-databases/system-stored-procedures/sp-estimate-data-compression-savings-transact-sql.md)     
+ [Create a compressed index](../../t-sql/statements/create-index-transact-sql.md#l-create-a-compressed-index)     
+ [Creating a table that uses row compression](../../t-sql/statements/create-table-transact-sql.md#n-creating-a-table-that-uses-row-compression)