oracle:
select * from tab where rownum <= 10;
sql server:
select top 10 * from tab
mysql:
select * from tab limit 10
db2:
select * from tab fetch first 10 rows only
oracle:
select * from tab where rownum <= 10;
sql server:
select top 10 * from tab
mysql:
select * from tab limit 10
db2:
select * from tab fetch first 10 rows only