How to arrange columns in a Flutter datatable?

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To arrange the columns in a Flutter datatable, you can use the columns property and provide a list of DataColumn widgets. Each DataColumn widget represents a column in the table and has properties such as label, numeric, tooltip, etc. You can rearrange the columns by changing the order of the DataColumn widgets in the list. Here's an example:

DataTable(
  columns: [
    DataColumn(label: Text('Name')),
    DataColumn(label: Text('Age'), numeric: true),
    DataColumn(label: Text('Email')),
  ],
  rows: [
    DataRow(cells: [
      DataCell(Text('John')),
      DataCell(Text('24')),
      DataCell(Text('john@example.com')),
    ]),
    DataRow(cells: [
      DataCell(Text('Jane')),
      DataCell(Text('32')),
      DataCell(Text('jane@example.com')),
    ]),
  ],
);

In this example, the columns are arranged in the order Name, Age, Email. To change the order to Age, Name, Email, you can simply switch the order of the DataColumn widgets:

DataTable(
  columns: [
    DataColumn(label: Text('Age'), numeric: true),
    DataColumn(label: Text('Name')),
    DataColumn(label: Text('Email')),
  ],
  rows: [
    DataRow(cells: [
      DataCell(Text('24')),
      DataCell(Text('John')),
      DataCell(Text('john@example.com')),
    ]),
    DataRow(cells: [
      DataCell(Text('32')),
      DataCell(Text('Jane')),
      DataCell(Text('jane@example.com')),
    ]),
  ],
);