如果要插入固定有序的数据,用一个SQL可以用下面的方法
select
rownum
-
1
from
dual connect
by
rownum
<
21
alter
table
CMES.C_PARAMETER_NUM_T
drop
primary
key
cascade
;
drop
table
CMES.C_PARAMETER_NUM_T
cascade
constraints;
create
table
CMES.C_PARAMETER_NUM_T (
NUM_ID
NUMBER
(
20
)
not
null
);
alter
table
CMES.C_PARAMETER_NUM_T
add
constraint
PK_C_PARAMETER_NUM_T
primary
key
(NUM_ID);
declare
i
integer
;
begin
i:
=
0
;
loop
exit
when
i
>
400
;
i:
=
i
+
1
;
INSERT
INTO
CMES.C_PARAMETER_NUM_T (NUM_ID)
VALUES
(I);
end
loop;
end
;
/
COMMIT
;
这里还有注意一下,NULL列
如果UNION一个空值列,如:
select
num_id,
null
qty
from
c_parameter_num_t
where
num_id
<
20
在9I中可,但8I就要看相UNION的字段类型,否则会报类型不对,比如上面的例子就需要TO_NUMBER(NULL) QTY

