sql - 如何在使用 LIKE 运算符的地方使用 split 函数

Question

我想在包含 LIKE 运算符的查询中使用函数 split。

 SELECT * FROM Tbl_News n WHERE n.Date >= @Fromdate AND n.Date <= @Todate 
 AND n.Title LIKE '%' + (SELECT Item FROM dbo.SplitString(@key, ',')) + '%' 

n.Title 类型为 nvarchar。 但引发此错误:

Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

Answer 1

尝试使用APPLY:

SELECT n.*
FROM Tbl_News n CROSS APPLY
     (SELECT Item FROM dbo.SplitString(@key, ',')) s(item)
WHERE n.Date >= @Fromdate AND
      n.Date <= @Todate AND 
      n.Title LIKE '%' + s.item + '%' ;

如果您关心性能，您可以考虑对标题使用全文索引。