（er_parse_error）＃1064

Question

我已經嘗試了我刪除這3分不同的方式。 如果條件正確，我想從表buylist_products中刪除該行。

嘗試1：

DELETE FROM parkage_buylist_products bp, parkage_productsmeta pm, parkage_buylist b WHERE bp.product_id = pm.product_id AND (pm.meta_key = 'we_buy_price' OR pm.meta_key = 'we_buy_rule') AND pm.meta_value = 0 AND bp.order_id = b.order_id AND b.status = 'in_progress' AND b.order_id = 24 

嘗試2：

DELETE FROM parkage_buylist_products bp 
LEFT JOIN parkage_productsmeta pm, parkage_buylist b 
ON bp.product_id = pm.product_id 
WHERE (pm.meta_key = 'we_buy_price' OR pm.meta_key = 'we_buy_rule') 
AND pm.meta_value = 0 
AND bp.order_id = b.order_id 
AND b.status = 'in_progress' 
AND b.order_id = 24 

嘗試3：

DELETE FROM parkage_buylist_products bp, parkage_buylist b  
WHERE bp.order_id = b.order_id 
AND b.status = 'in_progress' 
AND b.order_id = 24 
AND bp.product_id IN (SELECT pm.product_id 
        FROM parkage_productsmeta pm 
       WHERE (pm.meta_key = 'we_buy_price' OR pm.meta_key = 'we_buy_rule') 
       AND pm.meta_value = 0 

對於第一個我試圖，刪除鹼基，刪除BP *這它給我一個語法錯誤。

謝謝您的幫助

Answer 1

請嘗試以下...

DELETE parkage_buylist_products, 
     parkage_productsmeta, 
     parkage_buylist 
FROM parkage_buylist_products 
JOIN parkage_productsmeta 
JOIN parkage_buylist 
WHERE parkage_buylist_products.product_id = parkage_productsmeta.product_id 
    AND parkage_buylist_products.order_id = parkage_buylist.order_id 
    AND (parkage_productsmeta.meta_key = 'we_buy_price' OR 
     parkage_productsmeta.meta_key = 'we_buy_rule') 
    AND parkage_productsmeta.meta_value = 0 
    AND parkage_buylist.status = 'in_progress' 
    AND parkage_buylist.order_id = 24; 

做使用標準delete from many tables at once sql快速搜索，我發現網頁在delete from two tables in one query後。我從他們最受歡迎的答案（由Eric）中選擇了第二個選項，並用您的代碼對其進行了修改。

根據我的研究，這應該從DELETE後指定那些符合規定的標準，這是一樣的你的問題記錄表中刪除。請注意，我已經剝離了別名 - 我寧願在沒有他們的地方工作。大概你仍然可以在這裏使用它們。

如果您有任何問題或意見，請隨時發佈相應評論。