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Oracle多表联查分页数据重复出现

2017-11-22 17:11 393 查看
一、问题描述

使用Oracle的分页语句进行分页,第一页,没问题,第二页出现重复数据:

第一页的数据:

SELECT *
FROM (
SELECT u.*, rownum AS r
FROM (
SELECT configs.VIDEOSERVICE, configs.VOICESERVICE, configs.IMAGESERVICE, doc.id AS docid, doc.name AS docname
, doc.begood, rice.graphicprice, rice.speechprice, rice.videoprice, chart.titleName
, hpath.FTPURL || doc.PHOTOID AS ftpurl, luate.score
FROM HEALTHDOCTOR doc
LEFT JOIN HealthServiceConfig configs ON doc.id = configs.docid
LEFT JOIN HEALTHPRICE rice ON doc.id = rice.docid
LEFT JOIN healthTitleChart chart ON doc.titlecode = chart.TITLECODE
LEFT JOIN HEALTHFTPPATH hpath ON doc.PATHCODE = hpath.PATHCODE
LEFT JOIN (
SELECT round(AVG(score), 1) AS score, docid
FROM healthevaluate
GROUP BY docid
) luate ON doc.id = luate.docid
LEFT JOIN (
SELECT COUNT(*) AS ordersum, docid
FROM HealthyOrder
GROUP BY docid
) orders ON doc.id = orders.docid
WHERE rice.GRAPHICPRICE >= 0
) u
WHERE rownum < 13
)
WHERE r >= 1



第二页的数据:

SELECT *
FROM (
SELECT u.*, rownum AS r
FROM (
SELECT configs.VIDEOSERVICE, configs.VOICESERVICE, configs.IMAGESERVICE, doc.id AS docid, doc.name AS docname
, doc.begood, rice.graphicprice, rice.speechprice, rice.videoprice, chart.titleName
, hpath.FTPURL || doc.PHOTOID AS ftpurl, luate.score
FROM HEALTHDOCTOR doc
LEFT JOIN HealthServiceConfig configs ON doc.id = configs.docid
LEFT JOIN HEALTHPRICE rice ON doc.id = rice.docid
LEFT JOIN healthTitleChart chart ON doc.titlecode = chart.TITLECODE
LEFT JOIN HEALTHFTPPATH hpath ON doc.PATHCODE = hpath.PATHCODE
LEFT JOIN (
SELECT round(AVG(score), 1) AS score, docid
FROM healthevaluate
GROUP BY docid
) luate ON doc.id = luate.docid
LEFT JOIN (
SELECT COUNT(*) AS ordersum, docid
FROM HealthyOrder
GROUP BY docid
) orders ON doc.id = orders.docid
WHERE rice.GRAPHICPRICE >= 0
) u
WHERE rownum < 25
)
WHERE r >= 13



第一页和第二页有数据重复了,排序有问题。

二、解决方法

在最外层加个"order by id"其中这个id是主键就行了:

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