明明已经把ck.sal删除了,并且select constraint_name,table_name,search_condition
  2  from user_constraints
  3  where owner='SCOTT';
CONSTRAINT_NAME                TABLE_NAME      SEARCH_CONDITION
------------------------------ --------------- --------------------
PK_DEPT                        DEPT
UN_ENAME                       EMP
PK_EMP                         EMP
FK_DEPTNO                      EMP
NOTNULLA                       XSA             "ID" IS NOT NULL
BIN$2AlWV8Q3HFzgQKjABABm2A==$0 BIN$2AlWV8Q5HFz
                               gQKjABABm2A==$0SYS_C005414                    SCOTT1
PK_E                           E
FK_E                           ECONSTRAINT_NAME                TABLE_NAME      SEARCH_CONDITION
------------------------------ --------------- --------------------
SYS_C005415                    S
SYS_C005416                    WED
也没有这个ck_sal,但创建时总说上面那句?
求解释