oracel中date类型的变量输入格式是什么呀？

Question

insert into ...values (to_date('20040322','yyyymmdd') ...

Answer 1

SELECT SYSDATE FROM DUAL 
对照一下不就清楚

Answer 2

SQL> SELECT * FROM V$NLS_PARAMETERS;PARAMETER                                                        VALUE
---------------------------------------------------------------- ----------------------------------------------------------------
NLS_LANGUAGE                                                     SIMPLIFIED CHINESE
NLS_TERRITORY                                                    CHINA
NLS_CURRENCY                                                     RMB
NLS_ISO_CURRENCY                                                 CHINA
NLS_NUMERIC_CHARACTERS                                           .,
NLS_CALENDAR                                                     GREGORIAN
NLS_DATE_FORMAT                                                  DD-MON-RR
NLS_DATE_LANGUAGE                                                SIMPLIFIED CHINESE
NLS_CHARACTERSET                                                 ZHS16GBK
NLS_SORT                                                         BINARY
NLS_TIME_FORMAT                                                  HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT                                             DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT                                               HH.MI.SSXFF AM TZH:TZM
NLS_TIMESTAMP_TZ_FORMAT                                          DD-MON-RR HH.MI.SSXFF AM TZH:TZM
NLS_DUAL_CURRENCY                                                RMB
NLS_NCHAR_CHARACTERSET                                           AL16UTF16
NLS_COMP                                                         BINARY
NLS_LENGTH_SEMANTICS                                             BYTE
NLS_NCHAR_CONV_EXCP                                              FALSE19 rows selected

Answer 3

alter system set NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss';

Answer 4

insert 时先 to_date or to_char 为你要的日期格式如 "YYYYMMDD","YYYY/MM/DD"

Answer 5

看看注册表中oracle的 NLS_DATE_FORMAT的键值就是默认的日期格式。
可修改它，如：“YYYY/MM/DD HH24:MI:SS”
没有，可增加 NLS_DATE_FORMAT