ClickHouse

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#include <Functions/FunctionFactory.h>
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#include <Functions/HasSubsequenceImpl.h>
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namespace DB
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{
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namespace
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{
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struct HasSubsequenceCaseSensitiveUTF8
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{
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    static constexpr bool is_utf8 = true;
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    static int toLowerIfNeed(int code_point) { return code_point; }
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};
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struct NameHasSubsequenceUTF8
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{
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    static constexpr auto name = "hasSubsequenceUTF8";
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};
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using FunctionHasSubsequenceUTF8 = HasSubsequenceImpl<NameHasSubsequenceUTF8, HasSubsequenceCaseSensitiveUTF8>;
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}
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REGISTER_FUNCTION(hasSubsequenceUTF8)
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{
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    factory.registerFunction<FunctionHasSubsequenceUTF8>({}, FunctionFactory::CaseInsensitive);
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}
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}
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