SQL通配符不产生任何结果

Question

我想对此应该有一个相当简单的解释，但我无法提出任何想法。

此查询按预期工作（结果= 1行）：

SELECT Sites.Master_ID AS Master_ID, Scopes.Name AS Scope, Brands.Extension AS [Brand], Sites.ID AS [Site ID], Sites.Name AS [Site Name], Sites.Address, Sites.CAP, Sites.City, Countries.Name AS Country
FROM Sites
INNER JOIN Scopes ON Sites.scope_ID = Scopes.ID INNER JOIN Brands ON Sites.brand_ID = Brands.ID
INNER JOIN Countries ON Sites.country_ID = Countries.ID
WHERE 'BA001' IN (Scopes.Name, Brands.Extension, Sites.ID, Sites.Name, CONVERT(nvarchar(MAX),Sites.Address), Sites.CAP, Sites.City, Countries.Name)

虽然不是通配符（结果= 0行）：

SELECT Sites.Master_ID AS Master_ID, Scopes.Name AS Scope, Brands.Extension AS [Brand], Sites.ID AS [Site ID], Sites.Name AS [Site Name], Sites.Address, Sites.CAP, Sites.City, Countries.Name AS Country
FROM Sites
INNER JOIN Scopes ON Sites.scope_ID = Scopes.ID INNER JOIN Brands ON Sites.brand_ID = Brands.ID
INNER JOIN Countries ON Sites.country_ID = Countries.ID
WHERE '%BA001%' IN (Scopes.Name, Brands.Extension, Sites.ID, Sites.Name, CONVERT(nvarchar(MAX),Sites.Address), Sites.CAP, Sites.City, Countries.Name)

我是否正确使用通配符？

期待您的回复。非常感谢。

PS：我正在从SQL Server Management Studio 18.4启动查询

Answer 1

通配符与LIKE一起使用，而不与IN一起使用。

您可以将这些值连接在一起：

WHERE CONCAT(Scopes.Name, Brands.Extension, Sites.ID, Sites.Name, CONVERT(nvarchar(MAX),Sites.Address), Sites.CAP, Sites.City, Countries.Name) LIKE '%BA001%'

您可能要包括定界符：

WHERE CONCAT_WS('|', Scopes.Name, Brands.Extension, Sites.ID, Sites.Name, CONVERT(nvarchar(MAX),Sites.Address), Sites.CAP, Sites.City, Countries.Name) LIKE '%BA001%'

CONCAT_WS()在SQL Server 2017中引入。