MySQL＃1054 - '字段列表'中的未知列'lat'

Question

我試圖合併兩個MySQL語句，我想我已經接近解決這個問題了，但我得到了「＃1054 - 未知列'lat' '字段列表'「參考下面的粗體文本。

我試着涵蓋LAT和LNG文本用 「」， ''，甚至``沒有效果。

SELECT post_attributes_3.value AS name, clean, post_attributes.value AS lat, post_attributes_1.value AS lng, post_attributes_2.value AS category, (3959 * acos(cos(radians('%s')) * cos(radians(**lat**)) * cos(radians(**lng**) - radians('%s')) + sin(radians('%s')) * sin(radians(**lat**)))) AS distance 
FROM post_attributes AS post_attributes_3 INNER JOIN ((post_attributes AS post_attributes_1 INNER JOIN (posts INNER JOIN post_attributes ON posts.id = post_attributes.post_id) ON post_attributes_1.post_id = posts.id) INNER JOIN post_attributes AS post_attributes_2 ON posts.id = post_attributes_2.post_id) ON post_attributes_3.post_id = posts.id 
WHERE (((post_attributes_3.name)="name") AND ((post_attributes_2.name)="category_id") AND ((post_attributes.name)="lat") AND ((post_attributes_1.name)="lng")) 
HAVING distance < '%s' ORDER BY distance LIMIT 0 , 20; 

兩個SQL語句我有如下組合：

SELECT name, clean, lat, lng, category, (3959 * acos(cos(radians('%s')) * cos(radians(lat)) * cos(radians(lng) - radians('%s')) + sin(radians('%s')) * sin(radians(lat)))) AS distance FROM categorize HAVING distance < '%s' ORDER BY distance LIMIT 0 , 20; 

和

SELECT post_attributes_3.value AS name, clean, post_attributes.value AS lat, post_attributes_1.value AS lng, post_attributes_2.value AS category 
FROM post_attributes AS post_attributes_3 INNER JOIN ((post_attributes AS post_attributes_1 INNER JOIN (posts INNER JOIN post_attributes ON posts.id = post_attributes.post_id) ON post_attributes_1.post_id = posts.id) INNER JOIN post_attributes AS post_attributes_2 ON posts.id = post_attributes_2.post_id) ON post_attributes_3.post_id = posts.id 
WHERE (((post_attributes_3.name)="name") AND ((post_attributes_2.name)="category_id") AND ((post_attributes.name)="lat") AND ((post_attributes_1.name)="lng")); 

這兩個MySQL語句是精細分開但它可能是與使用的AS聲明。

更新：感謝您的幫助球員，但由於這種選擇查詢被使用的方式，我選擇創建一個MySQL視圖並使用它來運行一個類似的SQL命令到我的第一個。

Answer 1

嘗試真正的列名替換別名：

SELECT post_attributes_3.value AS name, clean, post_attributes.value AS lat, post_attributes_1.value AS lng, post_attributes_2.value AS category, (3959 * acos(cos(radians('%s')) * cos(radians(post_attributes.value)) * cos(radians(post_attributes_1.value) - radians('%s')) + sin(radians('%s')) * sin(radians(post_attributes.value)))) AS distance 
FROM post_attributes AS post_attributes_3 INNER JOIN ((post_attributes AS post_attributes_1 INNER JOIN (posts INNER JOIN post_attributes ON posts.id = post_attributes.post_id) ON post_attributes_1.post_id = posts.id) INNER JOIN post_attributes AS post_attributes_2 ON posts.id = post_attributes_2.post_id) ON post_attributes_3.post_id = posts.id 
WHERE (((post_attributes_3.name)="name") AND ((post_attributes_2.name)="category_id") AND ((post_attributes.name)="lat") AND ((post_attributes_1.name)="lng")) 
HAVING distance < '%s' ORDER BY distance LIMIT 0 , 20; 

SQL fiddle to show how to use WHERE and HAVING with column aliases

最後查詢導致錯誤，這是你有太多的問題。