bookman bookman escribió: > Then error occured: > error:invalid input syntax for type timestamp:"" > context:copy T_Admin ,line 2,column regDate:"" > It seemed that the column REGDATE cannot accept a NULL.I tested it use: > insert into T_Admin(name,key,regDate,isLock,realName) > values('aaa','aaa','','1','aaa'); > The same error occured. > > So it means that the column with type timestamp cannot accept a NULL > .Is there any way I can tansfer this table into postgre?How can i deal > with NULL in this case? No, it doesn't mean that. It means that you are trying to insert an empty string. Try this: insert into T_Admin(name,key,regDate,isLock,realName) values('aaa','aaa',NULL,'1','aaa'); Similarly, the NULL timestamp column in the file you give to COPY should not contain empty quotes. -- Alvaro Herrera http://www.advogato.org/person/alvherre "Crear es tan difícil como ser libre" (Elsa Triolet) ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq