mysql - INSERT INTO...ON DUPLICATE KEY 错误

Question

我有这个问题

INSERT INTO outlet_inventory (outletid, itemid, itemqty)
VALUES('$outletid', '$itemid', '$qty') 
WHERE outletid = '$outletid'
ON DUPLICATE KEY 
UPDATE outlet_inventory.itemqty = outlet_inventory.itemqty + $qty

据我所知没有错误，但我得到了这个错误

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE outletid = 5' at line 5

知道哪里出了问题吗？

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更新

更新了我的查询...仍然遇到同样的错误。

INSERT INTO outlet_inventory (outletid, itemid, itemqty)
VALUES('$outletid', '$itemid', '$qty') 
ON DUPLICATE KEY 
UPDATE outlet_inventory.itemqty = outlet_inventory.itemqty + $qty
WHERE outletid = '$outletid'

Answer 1

您的 INSERT 中有一个 WHERE 子句。这应该在 UPDATE 上。

INSERT INTO outlet_inventory (outletid, itemid, itemqty)
VALUES('$outletid', '$itemid', '$qty') 
ON DUPLICATE KEY 
UPDATE outlet_inventory.itemqty = outlet_inventory.itemqty + $qty     
WHERE outletid = '$outletid'