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 number of top / percentage from table
Such as:
select top 10 from ticket --- ticket return the first 10 rows in the data table
select top 10 from ticket where name = 'test' --- returns the first 10 rows in the data table ticket, name of the test
select top 10 from ticket order by id desc --- 10 before returning the id data for reverse
select top 10 percent from ticket --- return ticket data table top 10%
Two, MySQL
select * from table limit starting value, number of
Such as:
select * from ticket limit 1,5 --- return ticket table, rows 1-5
三、Oracle
select * from table where ROWNUM<=数量
Such as:
select * from ticket where ROWNUM <= 10 --- return list, the first 10 rows ticket
This article comes from: https://www.cnblogs.com/smallstone2018/p/11165421.html