note

Author: XiaoyuMSFT

articles/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-distribute.md

@@ -87,9 +87,9 @@ WITH
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-Data in the distribution column can be updated.
+Data stored in the distribution column can be updated.  Updates to data in the distribution column could result in data shuffle operation.
 
-Choosing a distribution column is an important design decision since the values in this column determine how the rows are distributed. The best choice depends on several factors, and usually involves tradeoffs. If you didn't choose the best column the first time, you can use [CREATE TABLE AS SELECT (CTAS)](/sql/t-sql/statements/create-table-as-select-azure-sql-data-warehouse?toc=/azure/synapse-analytics/sql-data-warehouse/toc.json&bc=/azure/synapse-analytics/sql-data-warehouse/breadcrumb/toc.json&view=azure-sqldw-latest) to re-create the table with a different distribution column.
+Choosing a distribution column is an important design decision since the values in this column determine how the rows are distributed. The best choice depends on several factors, and usually involves tradeoffs. Once a distribution column is chosen, you cannot change it.  If you didn't choose the best column the first time, you can use [CREATE TABLE AS SELECT (CTAS)](/sql/t-sql/statements/create-table-as-select-azure-sql-data-warehouse?toc=/azure/synapse-analytics/sql-data-warehouse/toc.json&bc=/azure/synapse-analytics/sql-data-warehouse/breadcrumb/toc.json&view=azure-sqldw-latest) to re-create the table with a different distribution column.
 
 ### Choose a distribution column with data that distributes evenly