DMDhanasekar Mohanraj Syncfusion Team January 25, 2023 12:05 PM UTC
Hi Sangyong Lee,
SfDataGrid currently doesn't have support to merge the column
headers. However, SfDataGrid supports showing multiple-column headers i.e.
Stacked Headers where you can show the merged multiple-column headers.
For more information related to Stacked Headers, please
refer to the below user guide documentation link,