你是不是想模拟一些随机的测试数据
我提供一个不错的脚本给你
create or replace procedure gen_data( p_tname in varchar2, p_records in number )
authid current_user
as
l_insert long;
l_rows number default 0;
begin
dbms_application_info.set_client_info( 'gen_data ' || p_tname );
l_insert := 'insert /*+ append */ into ' || p_tname ||
' select ';
for x in ( select data_type, data_length,
nvl(rpad(
'9',data_precision,'9')/power(10,data_scale),9999999999) maxval
from user_tab_columns
where table_name = upper(p_tname)
order by column_id )
loop
if ( x.data_type in ('NUMBER', 'FLOAT' ))
then
l_insert := l_insert || 'dbms_random.value(1,' || x.maxval || '),';
elsif ( x.data_type = 'DATE' )
then
l_insert := l_insert ||
'sysdate+dbms_random.value+dbms_random.value(1,1000),';
else
l_insert := l_insert || 'dbms_random.string(''A'',' ||
x.data_length || '),';
end if;
end loop;
l_insert := rtrim(l_insert,',') ||
' from all_objects where rownum <= :n';
loop
execute immediate l_insert using p_records - l_rows;
l_rows := l_rows + sql%rowcount;
commit;
dbms_application_info.set_module( l_rows || ' rows of ' || p_records, ''
);
exit when ( l_rows >= p_records );
end loop;
end;
/
你只要用下面的方法就可以实现你随机插入100条数据了
SQL> create table test( x varchar2(10) );
Table created.
SQL> exec gen_data('TEST', 100)
insert /*+ append */ into TEST select dbms_random.string('A',10) from
all_objects where rownum <= :n
PL/SQL procedure successfully completed.
SQL> select * from test;
X
----------
\JlLWWKogS
IUnoXAtHOR
...
100 rows selected.
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