jsp多表查询分页

[yca8530844]

多表查询出来的数据怎么分页最好

[Stephen_Kang]

public List findAllBookByPage(int page) {
List list = new ArrayList();
conn = this.getConn();
int rows = 0;
if(page > 1){
rows = (page-1)*5;
}
String sql = "select top 5 * from books inner join bookType on books.ids=bookType.id where ids not in (select top "+rows+" ids from books inner join bookType on books.ids=bookType.id order by ids asc) order by ids asc";
try {
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
while(rs.next()){
int ids = rs.getInt(1);
String bookName = rs.getString(2);
String author = rs.getString(3);
String descs = rs.getString(4);
int bid = rs.getInt(5);
Book book = new Book(ids,bookName,author,descs,bid);
list.add(book);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
this.closeAll(conn, pstmt, rs);
}
return list;
}

[zpls2003]

查询的时候用LEFT JOIN效率最高！