【问题标题】:Converting 'WITH CTE' MSSQL to MySQL将“WITH CTE”MSSQL 转换为 MySQL
【发布时间】:2015-03-18 02:18:29
【问题描述】:

我意识到这不会直接从 MSSQL 转换为 MySQL,但我不确定如何使其工作。感谢您提供的任何帮助。

;WITH cte As (
SELECT
    post_id,
    status, 
    dealer, 
    distributor,
    SUM( 
        3959 * acos( 
        cos( radians(%f) ) * 
        cos( radians( lat ) ) * 
        cos( radians( lng ) - radians(%f) ) + 
        sin( radians(%f) ) * 
        sin( radians( lat ) ) 
        ) 
    ) 
    AS DISTANCE
    FROM wp_geodatastore
    GROUP BY post_id, status, dealer, distributor       
)
SELECT post_id, status, dealer, distributor, DISTANCE
FROM cte WHERE (DISTANCE < %d) 
AND status = 'publish' AND dealer = 'on' AND distributor = 'on'
ORDER BY DISTANCE
OFFSET %d ROWS
FETCH NEXT %d ROWS ONLY;

【问题讨论】:

  • 我确实看到了那个帖子,但我没有足够的经验知道如何处理这些建议。 TEMPORARY 表、DERIVED 表、内联视图?
  • 我会尝试使用临时表,也许不是那么优雅的解决方案,但绝对应该可以。
  • 感谢凯南的帮助,看起来答案是让它成为一个子查询。见下文。

标签: mysql sql-server common-table-expression


【解决方案1】:

只需将其设为子查询:

SELECT post_id, status, dealer, distributor, DISTANCE
FROM (SELECT post_id, status, dealer, distributor,
             SUM( 3959 * acos( 
                 cos( radians(%f) ) * 
                 cos( radians( lat ) ) * 
                 cos( radians( lng ) - radians(%f) ) + 
                 sin( radians(%f) ) * 
                 sin( radians( lat ) ) 
                ) 
               ) AS DISTANCE
      FROM wp_geodatastore
      GROUP BY post_id, status, dealer, distributor       
     ) cte
WHERE (DISTANCE < %d) AND
      status = 'publish' AND dealer = 'on' AND distributor = 'on'
ORDER BY DISTANCE
OFFSET %d ROWS
FETCH NEXT %d ROWS ONLY;

【讨论】:

    猜你喜欢
    • 2012-02-08
    • 1970-01-01
    • 2018-08-09
    • 1970-01-01
    • 2017-12-11
    • 2023-03-11
    • 1970-01-01
    • 1970-01-01
    相关资源
    最近更新 更多