Merge pull request #25826 from MicrosoftDocs/FromPublicRepo

Confirm merge from FromPublicRepo to main to sync with https://github.com/MicrosoftDocs/sql-docs (branch live)

Author: huypub

docs/linux/sql-server-linux-setup-machine-learning.md

@@ -4,7 +4,7 @@ titleSuffix: SQL Server 2019 Machine Learning Services
 description: "Learn how to install SQL Server 2019 Machine Learning Services on Linux: Red Hat, Ubuntu, and SUSE."
 author: WilliamDAssafMSFT
 ms.author: wiassaf
-ms.date: 05/24/2022
+ms.date: 01/27/2023
 ms.topic: how-to
 ms.service: sql
 ms.subservice: machine-learning-services
@@ -147,6 +147,9 @@ sudo su
 # Optionally, if your system does not have the https apt transport option
 apt-get install apt-transport-https
 
+# If you are on Ubuntu 20.04, install the following package (MRO 3.5 has a dependency on libtinfo.so.5 in Ubuntu 20.04)
+apt-get install libncurses5
+
 # Set the location of the package repo the "prod" directory containing the distribution.
 # This example specifies 20.04. Replace with 16.04 or 14.04 if you want those versions.
 wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb

docs/t-sql/queries/select-transact-sql.md

@@ -39,10 +39,10 @@ monikerRange: ">=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-s
 
  [ [GROUP BY *group_by_expression*](../../t-sql/queries/select-group-by-transact-sql.md) ]  
 
- [ [WINDOW *window expression*](../../t-sql/queries/select-window-transact-sql.md)]
-  
  [ [HAVING *search_condition*](../../t-sql/queries/select-having-transact-sql.md) ]  
-  
+
+ [ [WINDOW *window expression*](../../t-sql/queries/select-window-transact-sql.md)]
+ 
  [ [ORDER BY *order_expression* [ ASC | DESC ] ](../../t-sql/queries/select-order-by-clause-transact-sql.md)]  
 
  The [UNION](../../t-sql/language-elements/set-operators-union-transact-sql.md), [EXCEPT, and INTERSECT](../../t-sql/language-elements/set-operators-except-and-intersect-transact-sql.md) operators can be used between queries to combine or compare their results into one result set.  

docs/t-sql/statements/copy-into-transact-sql.md

@@ -430,9 +430,11 @@ WITH (
 ## FAQ
 
 ### What is the performance of the COPY command compared to PolyBase?
-The COPY command will have better performance depending on your workload. For best loading performance, consider splitting your input into multiple files when loading CSV. This guidance applies to gzip compressed files as well.
+The COPY command will have better performance depending on your workload. 
+- Uncompressed files can be split automatically, so there's no need to manually split CSV files. 
+- Large compressed cannot be split automatically. For best loading performance, consider splitting your input into multiple files when loading compressed CSV.
 
-### What is the file splitting guidance for the COPY command loading CSV files?
+### What is the file splitting guidance for the COPY command loading compressed CSV files?
 Guidance on the number of files is outlined in the table below. Once the recommended number of files are reached, you will have better performance the larger the files. The number of files is determined by number of compute nodes multiplied by 60. For example, at 6000DWU we have 12 compute nodes and 12*60 = 720 partitions.  For a simple file splitting experience, refer to [How to maximize COPY load throughput with file splits](https://techcommunity.microsoft.com/t5/azure-synapse-analytics/how-to-maximize-copy-load-throughput-with-file-splits/ba-p/1314474).
 
 | **DWU** | **#Files** |