mysql oracle rownum similar wording

oracle rownum is only wording, rownum may be used to fetch the first data in the oracle, or write data defining a bulk quantity of batch writing the like

writing the first data fetch mysql

  SELECT * FROM t order by id LIMIT 1;

taking first data written oracle

  SELECT * FROM t where rownum =1 order by id;

ok, the above is taken mysql and oracle Comparative writing the first data, but this is just one use of rownum, rownum write data can also be used for batch

T table to write a batch million data:

  insert into t(id,date) select sys_guid(),sysdate from dual connect by rownum<=10000;

oracle original wording:

select * from (select id,name from t) where rownum <![CDATA[<=]]> to_number(num);

After rewriting mysql SQL:

SELECT 
  * 
FROM
  (SELECT 
    tb.*,
    @rownum := @rownum + 1 AS rownum 
  FROM
    (SELECT 
      id,
      NAME 
    FROM
      t) tb,
    (SELECT 
      @rownum := 0) r) AS t 
WHERE rownum <= CAST(num AS SIGNED INTEGER) ;