Oracle ORA-01861:使用存储过程时，文字与格式字符串不匹配

我试图在存储过程中执行以下语句

execute immediate 'insert into tmp_vw(TMP_SRC, SNAP_DATE) 
                   select TMP_SRC,Max(SNAP_DATE) as SNAP_DATE 
                   from tmp_demand group by TMP_SRC'

ORA-01861:文字与格式字符串不匹配

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SNAP_DATE类型为DATE，值的格式为“2001-01-01”

您必须将TMP_DEMAND.SNAP_DATE作为varchar2

例如

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您也需要将临时表更改为date以避免错误。

tmp\u vw.SNAP\u date或tmp\u demand.SNAP\u date必须是varchar2？如果

SNAP\u date

类型为

date

，则它没有“格式”。

SQL> create table tmp_vw(TMP_SRC varchar2(20), SNAP_DATE date);

Table created.

SQL> create table tmp_demand(TMP_SRC varchar2(20), SNAP_DATE varchar2(20));

Table created.

SQL> alter session set nls_date_format ='yyyy-mm-dd';

Session altered.

SQL> insert into tmp_demand select 'a', sysdate from dual;

1 row created.

SQL> alter session set nls_date_format ='dd/mm/yyyy';

Session altered.

SQL> insert into tmp_vw(TMP_SRC, SNAP_DATE) select TMP_SRC,Max(SNAP_DATE) as SNAP_DATE from tmp_demand group by TMP_SRC;
insert into tmp_vw(TMP_SRC, SNAP_DATE) select TMP_SRC,Max(SNAP_DATE) as SNAP_DATE from tmp_demand group by TMP_SRC
                                                      *
ERROR at line 1:
ORA-01861: literal does not match format string