定義變量，無效標識符。歐幾里得距離

-1

oracle不斷拒絕任何我在with子句中嘗試調用經度的東西。定義變量，無效標識符。歐幾里得距離

WITH params as (
     SELECT -28 as lat, 151 as lon 
     FROM dual 
    ) 
SELECT sighting_id 
FROM sightings 
ORDER BY sqrt(power(lat - latitude, 2) + power(lon - longitude, 2));

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2016-10-19 101ldaniels

向我們展示您的數據庫架構。請閱讀[** How-to-Ask **]（http://stackoverflow.com/help/how-to-ask） \t \t這裏是[** START **]（http ：//spaghettidba.com/2015/04/24/how-to-post-at-sql-question-on-a-public-forum/），瞭解如何提高您的問題質量並獲得更好的答案。 –

您在WITH中定義參數，但從不在FROM中引用它。

WITH params as (
     SELECT -28 as lat, 151 as lon 
     FROM dual 
    ) 
SELECT sighting_id 
FROM sightings CROSS JOIN params 
ORDER BY sqrt(power(lat - latitude, 2) + power(lon - longitude, 2));

來源

2016-10-19 03:54:44

定義變量，無效標識符。歐幾里得距離

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