我发现了同样的问题here但是没有人回答,我在这里提供了更简单的例子,然后再问...代码:prepare("SELECT'Dumpstheinformationscontainedbyapreparedstatementdirectlyontheoutput.ItwillprovidetheSQLqueryinuse,thenumberofparametersused(Params),thelistofparameters,withtheirname,type(paramtype)asaninteger,theirkeynameorposition,andthepositioninth