In practice, we may be based on some sort after, just before the show how many pieces of data, then you need based on different databases, using different keywords
一、SQL Server/Access
select top Number / percentage from table
Such as:
select top 10 from ticket --- return ticket before the table 10 rows
select top 10 from ticket where name = ' test ' --- return ticket table, name before the test is 10 rows
select top 10 from ticket order by id desc --- return with id before the reverse 10 of data
select top 10 percent from ticket --- return ticket table before 10% of the data
Two, MySQL
select * from table limit starting value , number of
Such as:
select * from ticket limit 1,5 --- return ticket table, 1-5 rows
三、Oracle
select * from table where ROWNUM<=数量
Such as:
select * from ticket where ROWNUM <= 10 --- return ticket list, the first 10 rows of data