输入命令set feedback off
SQL> select count(*) from dual; COUNT(*)
----------
11 row selected.SQL> set feedback off
SQL> select count(*) from dual; COUNT(*)
----------
1
SQL>
SQL> select count(*) from dual; COUNT(*)
----------
11 row selected.SQL> set feedback off
SQL> select count(*) from dual; COUNT(*)
----------
1
SQL>
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