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select
file,
REPLACE(FILE, '[:alnum:]'+'.'+,'') AS Collection
FROM
CollectionData;
select
file,
REPLACE(FILENAME, '^[a-zA-Z0-9\.]','') AS Collection
FROM collectiondata;
我想从字符串中替换所有非字母数字字符,包括字符串中的.file扩展名,如下所示。用空字符串替换非字母数字字符MYSQL
AXS00003600.txt to AXS
NXS4DG00003600.txt to NXS4DG
我无法在执行上述查询时替换非字母数字数据。可能是什么问题呢?
可能重复的[MySQL:如何从字符串中删除所有非字母数字字符?](http://stackoverflow.com/questions/6942973/mysql-how-to-remove-all-non-alpha- numeric-characters-from-a-string) – Kzqai