这是一个实例:
procedure TMainForm.Button1Click(Sender: TObject);var arr:array of array of string;begin setlength(arr,2,3); arr[1,2]:='this is a test'; setlength(arr,0,0);&n...
1.select * from sys_dict as of timestamp to_timestamp('2019-11-05 10:00:00','yyyy-mm-dd hh24:mi:ss');
时间点在删除数据之前,又尽量精确 sys_dict 是表名
2.insert into sys_dict (select * ...