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请教个MYSQL的有关问题

WBOY
WBOYOriginal
2016-06-13 12:34:47852browse

请问个MYSQL的问题

如果数据库里存的是短字符串:
AB
BC
CD

那么我手上的词是长字符串,例如 ABCD,那么SQL应该怎么写,来匹配出该字符包含有数库里的短词记录?要连着的,要用CONCAT吗?

另外,保存这些短字符串到数据库的时候,如何处理才能安全,会不会有注入之类的隐患?
谢谢

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