在數據庫中創建virtuemart視圖

Question

我想在myphp中創建視圖，我不是我正在學習的編碼器， 有人可以幫助我嗎？ 這是我的查詢

CREATE VIEW export AS SELECT * FROM 
apef1_virtuemart_orders, apef1_virtuemart_order_items, apef1_virtuemart_order_userinfos 
WHERE apef1_virtuemart_orders.virtuemart_order_id = apef1_virtuemart_order_items.virtuemart_order_id 
AND apef1_virtuemart_orders.virtuemart_order_id = apef1_virtuemart_order_userinfos.virtuemart_order_id 

，但我得到這個錯誤

1060 - 重複列名 'virtuemart_order_id'

有什麼不對？

Answer 1

我認爲這是由於您的select * from apef1_virtuemart_orders, apef1_virtuemart_order_items, apef1_virtuemart_order_userinfos。 virtuemart_order_id列存在於多個表中。

如果表之間存在名稱衝突，則必須使用別名來確保正確創建視圖。

看到這個查詢：

CREATE VIEW export AS 
    SELECT 
    avo.*, 
    avoi.order_item_sku, 
    avoi.order_item_name, 
    avoi.product_quantity, 
    avoi.product_item_price, 
    avoi.product_priceWithoutTax, 
    avoi.product_tax, 
    avoi.product_basePriceWithTax, 
    avoi.product_discountedPriceWithoutTax, 
    avoi.product_final_price, 
    avoi.product_subtotal_discount, 
    avoi.product_subtotal_with_tax, 
    avoi.order_item_currency, 
    avoi.order_status AS order_status_2, 
    avoi.product_attribute, 
    avoi.delivery_date AS delivery_date_2, 
    avoi.created_on AS created_on_2, 
    avoi.created_by AS created_by_2, 
    avoi.modified_on AS modified_on_2, 
    avoi.modified_by AS modified_by_2, 
    avoi.locked_on AS locked_on_2, 
    avoi.locked_by AS locked_by_2, 
    avou.virtuemart_userinfo_id, 
    avou.virtuemart_user_id, 
    avou.address_type, 
    avou.address_type_name, 
    avou.name, 
    avou.company, 
    avou.title, 
    avou.last_name, 
    avou.first_name, 
    avou.middle_name, 
    avou.phone_1, 
    avou.phone_2, 
    avou.fax, 
    avou.address_1, 
    avou.address_2, 
    avou.city, 
    avou.virtuemart_state_id, 
    avou.virtuemart_country_id, 
    avou.zip, 
    avou.agreed, 
    avou.tos, 
    avou.customer_note, 
    avou.created_on AS created_on_3, 
    avou.created_by AS created_by_3, 
    avou.modified_on AS modified_on_3, 
    avou.modified_by AS modified_by_3, 
    avou.locked_on AS locked_on_3, 
    avou.locked_by AS locked_by_3 
    FROM 
     apef1_virtuemart_orders avo, 
     apef1_virtuemart_order_items avoi, 
     apef1_virtuemart_order_userinfos avou 
    WHERE avo.virtuemart_order_id = avoi.virtuemart_order_id 
    AND avo.virtuemart_order_id = avou.virtuemart_order_id 

正如你所看到的，我用別名列created_on，created_by等，因爲這些名字是你的3代表相同。請隨意通過調整名稱來適應您的需求來修改查詢。