PHP Mysqli不更新數據庫中的數據

Question

這是我的代碼，可以正常工作，不會彈出錯誤，並且那里有變量的正確數據。

完成所有操作后，將顯示“ Done for the last echo”。

但是，當我進入heidisql查看數據庫表時，即使我在heidisql運行查詢，結果也沒有改變。

// Make connection to database
$connection = mysqli_connect($host,$user,$pass,$dbnm);
// Make query
$myQuery = "
    UPDATE Ekhaya_Inventory SET 
        ekhaya_inventory_stock_item = '" . $stockItemPost . "',
        ekhaya_inventory_stock_left = '" . $stockLeftPost . "',
        ekhaya_inventory_stock_out = '" . $stockOutPost . "',
        ekhaya_inventory_stock_minimum = '" . $stockMinimumPost . "',
        ekhaya_inventory_stock_price_per_item = '" . $stockPricePIPost . "',
        ekhaya_inventory_value_of_stock_left = '" . $stockValueOfStockLeftPost . "' 

        WHERE
            ekhaya_inventory_stock_code = '" . $stockCodePost . "' 
        AND
            ekhaya_inventory_stock_code = '" . $stockLocationPost . "'
";

mysqli_query($connection,$myQuery)or die("Error: ".mysqli_error($connection));
mysqli_close($connection)or die("Error: ".mysqli_error($connection));
echo "<br>Done";

Answer 1

WHERE
            ekhaya_inventory_stock_code = '" . $stockCodePost . "' 
        AND
            ekhaya_inventory_stock_code = '" . $stockLocationPost . "'

這是錯誤的，因為一個字段不能同時包含兩個不同的值