例1: 1.双击 var cb = new Ext.grid.RowSelectionModel({ singleSelect:true //如果值是false,表明可以选择多行:否则只能选择一行 }); var alarmGrid = new Ext.grid.GridPanel({ } alarmGrid.addListener('rowdblclick', rowdblclickFn); function rowdblclickFn(grid, rowindex, e){ grid.get…
[group by] 对结果集进行分组,常与汇总函数一起使用. SELECT column,SUM(column) FROM table GROUP BY column HAVING 通常与 GROUP BY 子句同时使用.不使用 GROUP BY 时, HAVING 则与 WHERE 子句功能相似. Company Amount W3Schools 5500 IBM …