sql替换两个字符串之间的所有字符

Question

我试图找出一种方法来更新/替换两个字符串之间的文本.

例如,我需要能够更新字段并仅替换以下脚本标记之间的内容,而不会触及打开脚本标记之前的文本.

I want to keep this string<script type="text/javascript" language="javascript">********</script>

我认为REPLACE不会起作用,因为脚本标签之间的文本会有所不同.是否有某种类型的通配符？

UPDATE Products_Joined 
SET TechSpecs = REPLACE (CAST(TechSpecs AS NVARCHAR(MAX)), '<script type="text/javascript" language="javascript">********</script>', '<script type="text/javascript" language="javascript">new text</script>' )

更新:使用@Parkyprg回答这有效,但不会替换结束</script>标记.我最终得到了这个.

I want to keep this string new text</script>

我们如何删除结束脚本标记？

UPDATE Products_Joined
SET TechSpecs = REPLACE(CAST(TechSpecs AS NVARCHAR(MAX)), 
SUBSTRING(CAST(TechSpecs AS NVARCHAR(MAX)),
CHARINDEX('<script type="text/javascript" language="javascript">',TechSpecs),
CHARINDEX('</script>',CAST(TechSpecs AS NVARCHAR(MAX))) - 
CHARINDEX('<script type="text/javascript" language="javascript">',TechSpecs)
),' new text') 

Answer 1

DECLARE @OpenTag varchar(100)
SET @OpenTag = '<script type="text/javascript" language="javascript">'

UPDATE Products_Joined
SET TechSpecs  = STUFF(TechSpecs ,
                       CHARINDEX(@OpenTag, TechSpecs ,1)  + LEN(@OpenTag),
                            CHARINDEX('</script>',TechSpecs ,1)-(CHARINDEX(@OpenTag, TechSpecs ,1)  + LEN(@OpenTag)), 
                       'New Text')