Release there were some issues with the way removing columns was being implemented.

So I decided to scrap that, and go for just having a hidden column style. This is what
@madshall did in his enhanced table pull request, so this is basically the hidden
column style feature form his pull request.

public/app/plugins/panel/table/editor.ts

@@ -39,6 +39,7 @@ export class TablePanelEditorCtrl {
       {text: 'Number', value: 'number'},
       {text: 'String', value: 'string'},
       {text: 'Date', value: 'date'},
+      {text: 'Hidden', value: 'hidden'}
     ];
     this.fontSizes = ['80%', '90%', '100%', '110%', '120%', '130%', '150%', '160%', '180%', '200%', '220%', '250%'];
     this.dateFormats = [

public/app/plugins/panel/table/module.html

@@ -4,7 +4,7 @@
 		<table class="table-panel-table">
 			<thead>
 				<tr>
-					<th ng-repeat="col in ctrl.table.columns">
+					<th ng-repeat="col in ctrl.table.columns" ng-hide="col.hidden">
 						<div class="table-panel-table-header-inner pointer" ng-click="ctrl.toggleColumnSort(col, $index)">
 							{{col.text}}
 							<span class="table-panel-table-header-controls" ng-if="col.sort">

public/app/plugins/panel/table/module.ts

@@ -94,7 +94,6 @@ class TablePanelCtrl extends MetricsPanelCtrl {
   onDataReceived(dataList) {
     this.dataRaw = dataList;
     this.pageIndex = 0;
-    this.panel.columns = [];
 
     // automatically correct transform mode based on data
     if (this.dataRaw && this.dataRaw.length) {

public/app/plugins/panel/table/renderer.ts

@@ -45,6 +45,12 @@ export class TableRenderer {
       return this.defaultCellFormater;
     }
 
+    if (style.type === 'hidden') {
+      return v => {
+        return undefined;
+      };
+    }
+
     if (style.type === 'date') {
       return v => {
         if (_.isArray(v)) { v = v[0]; }
@@ -119,6 +125,13 @@ export class TableRenderer {
       widthHack = '<div class="table-panel-width-hack">' + this.table.columns[columnIndex].text + '</div>';
     }
 
+    if (value === undefined) {
+      style = ' style="display:none;"';
+      this.table.columns[columnIndex].hidden = true;
+    } else {
+      this.table.columns[columnIndex].hidden = false;
+    }
+
     return '<td' + style + '>' + value + widthHack + '</td>';
   }
 

public/app/plugins/panel/table/transformers.ts

@@ -142,7 +142,6 @@ transformers['table'] = {
     if (!data || data.length === 0) {
       return [];
     }
-    return data[0].columns;
   },
   transform: function(data, panel, model) {
     if (!data || data.length === 0) {
@@ -153,27 +152,8 @@ transformers['table'] = {
       throw {message: 'Query result is not in table format, try using another transform.'};
     }
 
-    var i,j,k, entry;
-
-    if (panel.columns.length === 0) {
-      for (i = 0; i < data[0].columns.length; i++) {
-        panel.columns.push({ text: data[0].columns[i].text, value : data[0].columns[i].text});
-      }
-    }
-    var indices = [];
-    for (i = 0; i < panel.columns.length; i++) {
-      var column = _.findWhere(data[0].columns, { "text" : panel.columns[i].text });
-      indices.push(_.indexOf(data[0].columns, column));
-      model.columns.push(column);
-    }
-
-    for (i = 0; i < data[0].rows.length; i++) {
-      entry = [];
-      for (j = 0; j < indices.length; j++) {
-        entry.push(data[0].rows[i][indices[j]]);
-      }
-      model.rows.push(entry);
-    }
+    model.columns = data[0].columns;
+    model.rows = data[0].rows;
   }
 };