本文介绍了SQL Server 2000 中的最长前缀匹配的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有两张桌子.让我们只说它的记录和数字
I have 2 tables. lets just say its records and numbers
records.number 包含一个数字,我想在 SQL Server 2000 中的 numbers.prefix 中找到最长可能的关联前缀
the records.number contains a number which I want to find the longest possible associated prefix in numbers.prefix in SQL Server 2000
我该怎么做?
例如
records.number = '0841234567' numbers.prefix = '084' '0841' '08412'我想选择 08412
推荐答案 select top 1 N.Prefix from Numbers as N inner join Records as R on R.Number like N.Prefix+'%' order by len(N.Prefix) desc更新.
Records 中每个数字的最长前缀.
The longest prefix for each number in Records.
select R.Number, (select top 1 N.Prefix from Numbers as N where R.Number like N.Prefix+'%' order by len(N.Prefix) desc) as Prefix from Records as RSE-Data
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SQL Server 2000 中的最长前缀匹配
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