如何在MySQL中动态更改Limit [英] How to change Limit dynamically in mySQL

问题描述

public function getAllCelebDataFinal ($database,$celebrityId,$lastOutputId) 
{
    $getalldata = $database->executeObjectList("
        SELECT *
        FROM (
            (SELECT v.vidId, NULL as newsId, NULL as photoId, NULL as imageFile,
                    v.title as vidTitle, NULL as newsTitle, v.videoLink AS vidLink,
                    NULL as newsVidLink, NULL as newDetail , v.addDate
             FROM videos v
             WHERE v.celebrityId='".$celebrityId."' AND v.isPublished=1)
          UNION ALL
            (SELECT NULL as vidId, n.newsId,NULL as photoId,NULL as imageFile,
                    NULL as vidTitle, n.title as newsTitle, NULL AS vidLink,
                    n.videoLink as newsVidLink, n.details as newDetail,
                    n.addDate
             FROM news n
             WHERE n.celebrityId='".$celebrityId."' AND n.isPublished=1)
          UNION ALL
            (SELECT NULL as vidId,NULL as newsId,p.photoId,p.imageFile,
                    NULL as vidTitle, NULL as newsTitle, NULL AS vidLink,
                    NULL as newsVidLink,  NULL as newDetail , p.addDate
             FROM photos p
             WHERE p.celebrityId='".$celebrityId."' AND p.isPublished=1)
        ) results
        ORDER BY addDate DESC
        LIMIT 5");
    return $getalldata; 
}

将其视为第二个查询，如果我运行的第一个查询的限制为5，则我将sendind 5作为$ lastOutputId作为参数，并且我希望将此查询作为5到5 + 5运行，并且在同一条件下方式，下一次查询将以10到15的范围运行.我该怎么办?

Consider it as a second query, if i am running first query with the limit 5, i am sendind 5 as $lastOutputId as a parameter, and i want to run this query as 5 to 5+5, and in the same way, next query would run with limit 10 to 15. How can i do that?

推荐答案

LIMIT可能有2个参数.在我们的情况下，我认为您可以像这样使用LIMIT:

LIMIT may have 2 parameters. In our case I think you can use LIMIT like this:

LIMIT $lastOutputId, 5

文档: http://php.about.com/od/mysqlcommands/g/Limit_sql.htm

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