Regular expression: Difference between revisions

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Explanation:
Explanation:
* 匹配整個字串({{kbd | key=<nowiki>^</nowiki>}} 和 {{kbd | key=<nowiki>$</nowiki>}})
* 需要符合一個或多個 ASCII 字元({{kbd | key=<nowiki>[[:ascii:]]+</nowiki>}})
* 不區分大小寫({{kbd | key=<nowiki>i</nowiki>}} flag)


==== 尋找英文字、數字、破折號(-)或底線(_)字元 in MySQL ====
==== 尋找英文字、數字、破折號(-)或底線(_)字元 in MySQL ====

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