按照字母数字字符串的相似性排序MS SQL Server 2012

Question

我已经继承了使用PHP脚本访问SQL Server 2012数据库的项目。该应用程序允许用户输入几个参数并根据这些参数提出请求。

我遇到问题的部分是允许用户使用以字母数字字符串开头的SKU搜索项目的字段。

这是已使用的项目查询：

SELECT top 10 IB.LocalSKU 
, Cast(Round(IB.GoalMargin, 2) AS Decimal(10,2)) AS GoalMargin 
, CASE WHEN IB.MAP = 0 THEN NULL ELSE IB.MAP END AS Min 
, IB.ProductCost 
, IB.ShippingEstimate 
, EB.Price AS CurrentPrice 


FROM intra.InventoryBase IB INNER JOIN intra.DropshipChannelAdvisorSKUs CA 
    ON IB.LocalSKU = CA.LocalSKU 
LEFT JOIN intra.eBayQoHFeedback EB 
    ON CA.ChannelAdvisorSKU = EB.SKU 

WHERE LOWER(IB.LocalSKU) LIKE LOWER('$localSKU%') 
    AND LOWER(SupplierID) LIKE LOWER('%$supplierId%') 
    AND LOWER(IB.Category) LIKE LOWER('%$category%') 
    AND LOWER(IB.Dropship) LIKE LOWER('%$dropship%'); 

我注意到，该查询返回正确的信息，而不是在一个有用的顺序。

我不知道如何对它排序，以便SKU最接近匹配$ localSKU变量的行排在第一位。

我尝试这一点，但它没有我希望的效果：

ORDER BY Difference(IB.LocalSKU, '$localSKU%') ASC 

我也做模糊匹配的字符串一些阅读，但我不知道如何在这里实现它。

是否有一个有效的办法：

1. 搜索开始给定的字符串基于该字符串的亲近
2. 秩序的结果，然后由值

预期结果为varchar ：

参数：

$localSKU = "FMCPL1CY00"; 
$supplierId = 87; 
$category = "Premium Floor Liners"; 
$dropship = True; 

个

预期结果：

-------------------------------------------------------------------------------- 
| FMCPL1CY00* | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
| FMCPL1CY01* | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
| FMCPL1CY02* | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
| FMCPL1CY03* | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
-------------------------------------------------------------------------------- 

实际结果：

------------------------------------------------------------------------------------- 
| FMCPL1CH04221509 | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
| FMCPM1SA0021302 | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
| FMCPL1TY07801509 | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
| FMCPL1TY05721502 | GoalMargin | 0 | ProductCost | ShippingEstimate | CurrentPrice | 
------------------------------------------------------------------------------------- 

Answer 1

尝试此查询：

SELECT top 10 IB.LocalSKU 
, Cast(Round(IB.GoalMargin, 2) AS Decimal(10,2)) AS GoalMargin 
, CASE WHEN IB.MAP = 0 THEN NULL ELSE IB.MAP END AS Min 
, IB.ProductCost 
, IB.ShippingEstimate 
, EB.Price AS CurrentPrice 

,CASE WHEN IB.LocalSKU LIKE '$localSKU%' THEN 0 else 1 END as MyOrder 

FROM intra.InventoryBase IB INNER JOIN intra.DropshipChannelAdvisorSKUs CA 
    ON IB.LocalSKU = CA.LocalSKU 
LEFT JOIN intra.eBayQoHFeedback EB 
    ON CA.ChannelAdvisorSKU = EB.SKU 

WHERE LOWER(IB.LocalSKU) LIKE LOWER('$localSKU%') 
    AND LOWER(SupplierID) LIKE LOWER('%$supplierId%') 
    AND LOWER(IB.Category) LIKE LOWER('%$category%') 
    AND LOWER(IB.Dropship) LIKE LOWER('%$dropship%') 

ORDER BY MyOrder ASC; 

我希望它能帮助。