oracle数据库如何实现分页效果？

Posted 2023-04-14

参考技术A 通过ROWNUM来实现
1.
查询前10条记录
SELECT
*
FROM
TestTable
WHERE
ROWNUM
<=
10
2.
查询第11到第20条记录SELECT
*
FROM
(SELECT
TestTable.*,
ROWNUM
ro
FROM
TestTable
WHERE
ROWNUM
<=20)
WHERE
ro
>
10
3.
Oracle
分页和排序：按照name字段升序排列后的前10条记录
SELECT
*
FROM
(SELECT
*
FROM
TestTable
ORDERY
BY
name
ASC)
WHERE
ROWNUM
<=
10
4.
按照name字段升序排列后的第11到第20条记录
SELECT
*
FROM
(SELECT
tt.*,
ROWNUM
ro
FROM
(SELECT
*
FROM
TestTable
ORDER
BY
name
ASC)
tt
WHERE
ROWNUM
<=20)
WHERE
ro
>
10

Oracle, SQL Server, My SQL如何实现数据分页查询语句

参考技术A Oracle, SQL Server 和MySQL的分页SQL语句如下：Oracle：方法一：SELECT * FROM(SELECT A.*, ROWNUM RNFROM (SELECT * FROM TABLE_NAME) AWHERE ROWNUM <= 40)WHERE RN = 21；方法二：SELECT * FROM(SELECT A.*, ROWNUM RNFROM (SELECT * FROM TABLE_NAME) A)WHERE RN between 21 and 40公认第二种方法效率没有第一种高。原因是第二种要把子查询执行完，而第一种方法子查询执行到Rownum=40后就结束了。MySQL:SELECT * FROM TABLE_NAME LIMIT 10, 20表示从第11条数据开始取20条数据返回，limit后的2个参数含义为：起点和步长，即从那条数据开始，取多少条数据，再如取前20条数据：SELECT * FROM TABLE_NAME LIMIT 0, 20SQL Server2000：SELECT TOP @pagesize * FROM TABLE_NAME WHERE id not in (SELECT TOP @pagesize*(@page-1) id FROM TABLE_NAME ORDER BY id) ORDER BY id本回答被提问者采纳