Display tree structure data in Table when there is field key `children` in dataSource, try to customize `childrenColumnName` property to avoid tree table structure.
You can control the indent width by setting `indentSize`.
Events `expandedRowsChange` and `update:expandedRowKeys` are the same, which are callbacks executed when the expanded rows change. With Vue 2.3.0 or above vesion, prop `expandedRowKeys` can be used with event `update:expandedRowKeys`, and can be written as `:expandedRowKeys.sync="expandedRowKeys"` for short.
> Note, no support for recursive selection of tree structure data table yet.