[doc](function)support regexp_count function #2475
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yiguolei
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Jun 30, 2025
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| ## 返回值 | ||
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| - 返回正则表达式 “pattern” 在字符串 “str” 中的匹配字符数量，返回类型为 “int”。若没有字符匹配，则返回 0。 |
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如果 str 或者pattern 为null的时候，结果是啥？
如果 pattern 不符合正则表达式的规则定义返回是啥？
参考 https://docs.databricks.com/aws/en/sql/language-manual/functions/regexp_count 的定义
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如果明确了行为之后，得把这两个行为补充到测试case 章节
zclllyybb
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Jul 1, 2025
...-docs/version-3.0/sql-manual/sql-functions/scalar-functions/string-functions/regexp-count.md
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yiguolei
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Jul 1, 2025
zclllyybb
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