HSQLregexp_extract

HSQL的regexp_extract是一个函数，用于根据正则表达式从字符串中提取匹配的部分。它的语法是regexp_extract(string subject, string pattern, int index)，其中subject是要匹配的字符串，pattern是正则表达式，index是要提取的部分的索引。该函数将返回匹配的部分。这个函数在HSQL中可以帮助我们从字符串中提取出我们想要的特定部分。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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