sql-server-2008 - 如果用户输入“ABCD-EFGH”而不是“ABCDEFGH”，则 SQL 查询返回结果

Question

我正在使用 SQL Server 2008 并且需要编写一个查询，该查询应该返回一条记录，说明ABCDEFGH用户是否输入了诸如ABCD-EFGHor之类的搜索字符串ABDEFGH（即类似的记录）。

我将如何做到这一点？

Answer 1

you need to employ some sort of editDistance algorithm i.e Levenshtein distance ,Jaro–Winkler distance to calculate the difference between 2 strings.

look at this thread for Levenshtein distance implemented as udf

Levenshtein distance in T-SQL

you will use the UDF like this (just an example)

SELECT * FROM dbo.myTable
WHERE   dbo.editDistance(mycol,@SearchString)<2