ACCESS 写法
SELECT ID, SignalValue, StateValue, CheckTime
FROM SMSSignalTable
where CheckTime>=? and CheckTime<=?
SQL Server 写法
SELECT ID, SignalValue, StateValue, CheckTime
FROM SMSSignalTable
where CheckTime>=@startTime and CheckTime<=@endTime
Oracle 写法
SELECT ID, SignalValue, StateValue, CheckTime
FROM SMSSignalTable
where CheckTime>=? and CheckTime<=?
where 条件中的参数定义不知道和什么有关,希望有明白的给解释一下。