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end:2024-02-01T15:44:50.688Z I have 90 columns and the performance is

csv', 'excel', 'pdf', 'print'], "columns": [ { "data": "id", "name": "Id",

single line in the columns, it was an effective

This example states that you can use any mix of column-selector options. You should be able to add the column ID to the array, like this: columns: [':visible :not(:first-child,:nth-child(6))', '#myColumn'] Kevin

extend(true, DataTable.Buttons.defaults, $.fn.createDataTable = function (columns, ajaxOptions, order, initComplete = null)

ajax: "program_data/learning_event_outcome_data.php", dom: "Blfrtip", columns: [ { data: "learning_event_outcome.learning_event_outcome", width: '50%'

is follows the responsive columns shown. Is the tfoot

this updated example with columns.render removed. https://live.datatables.net/zukacehi/109/edit Also the

sum of the last column's index, and the number

Thanks Kevin, All sorted now - I capitalised the column name in the "Columns" but the json keys are lowercase. Cheers, David