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url: '../../controllers/joinNested3.php', type: 'POST' }, columns: [ { title: 'Designation', data: 'magasin.articles.designation'

needs to match the columns you are grouping. You

freezing the first 3 columns to freezing the top

hi @rahulsaxena could you please tell me how the css file disrupted your your columns from showing

Columns can't be added post-initialisation - you would need to destroy the table and recreate, Colin

You defined columnDefs twice. The second is overwriting the first. Please combine them into one option and see if it works. The columnDefs.targets docs state to use the string "_all" to assign to all columns. Kevin

startdate: "<?=$saveStartDate?>", enddate: "<?=$saveEndDate?>", }, }, columns: [ { "className": 'details-control', "orderable": false,

buttons: [ { extend: 'excelHtml5', exportOptions: { columns: ':visible:not(.not-export-col)', orthogonal: 'export' } }, { extend:

buttons": [ {extend: 'searchBuilder', config: {columns: [0,1],},}, 'copy', 'csv', 'pdf',

forgot to wrap the columns respectfully with brackets.. @kthorngren