select DateAdd (expire_date,1,'2012-06-24'),expire_date from A 為什么查不出來ERROR: function dateadd(timestamp with time zone, integer, unknown) does not existLINE 2: select DateAdd (expire_date,1,'2012-06-24'),expire_date from...^HINT: No function matches the given name and argument types. You might need to add explicit type casts.********** 錯誤 **********ERROR: function dateadd(timestamp with time zone, integer, unknown) does not existSQL 狀態: 42883指導建議:No function matches the given name and argument types. You might need to add explicit type casts.字符:9