ARROW-12949: [C++] Add starts_with and ends_with #10448
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cyb70289
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Jun 4, 2021
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Not sure what this comment means. Looks there's no template around.
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I mean L612-L653 below which are partial template specializations that convert a case-insensitive prefix/suffix match into an equivalent regex (to avoid having to do Unicode case folding ourselves): https://github.com/apache/arrow/pull/10448/files#diff-eb8300bc4dea7d1c46b2576b7dbd8e42b927ab7d42c031f4aecae892a72ee244R612-R653
pitrou
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Jun 7, 2021
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Thank you. Can you also update docs/source/cpp/compute.rst?
pitrou
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Jun 8, 2021
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This adds a simple starts_with and ends_with.
Also, now match_like can optimize some patterns into prefix/suffix matches. This also fixes a bug (which I believe is also present in Apache Impala) where some LIKE patterns are mistakenly optimized into suffix or substring matches.