public override ITable Evaluate(IQueryContext context)
{
var viewName = TableInfo.TableName;
// We have to execute the plan to get the DataTableInfo that represents the
// result of the view execution.
var t = QueryPlan.Evaluate(context);
var tableInfo = t.TableInfo.Alias(viewName);
var viewInfo = new ViewInfo(tableInfo, QueryExpression, QueryPlan);
context.DefineView(viewInfo);
// The initial grants for a view is to give the user who created it
// full access.
context.GrantToUserOnTable(viewName, Privileges.TableAll);
return FunctionTable.ResultTable(context, 0);
}