I'm looking to see to create a multi level lightning data table in LWC.
(ie) The parent object has a school Information, If selected a sub level(down arrow) opens and you can see the child records with there own actions, held in there own datatable as screenshot below.
As like below. I've found the tree-grid component, Now i just have to have the columns work with multiple field Names. Can any one please help me on this.