{"id":91075,"date":"2026-08-06T19:41:12","date_gmt":"2026-08-06T11:41:12","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/91075.html"},"modified":"2026-08-06T19:41:12","modified_gmt":"2026-08-06T11:41:12","slug":"kryonix%e6%8f%90%e4%ba%a4%e7%9a%84duckdb-%e7%bb%9f%e4%b8%80%e5%b9%b6%e4%bc%98%e5%8c%96%e6%a0%87%e9%87%8f%e6%89%a7%e8%a1%8c%e5%99%a8%e5%9f%ba%e7%a1%80%e8%ae%be%e6%96%bd-24564-pr","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/91075.html","title":{"rendered":"kryonix\u63d0\u4ea4\u7684DuckDB \u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd - #24564 PR"},"content":{"rendered":"

\u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd – #24564<\/h2>\n

\u5bf9\u8bdd
\n@kryonix
\nkryonix
\n\u8bc4\u8bba\u4e8e
\n24 \u5206\u949f\u524d
\n\u6210\u5458<\/p>\n

\u6211\u9047\u5230\u4e86 DuckDB \u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u4e00\u4e2a\u5206\u88c2：\u4e00\u5143\u548c\u4e8c\u5143\u6267\u884c\u6709\u7cbe\u5fc3\u7279\u5316\u7684\u5e73\u5766（flat）\u548c\u5e38\u91cf（constant）\u8def\u5f84，\u800c\u4e09\u5143\u53ca\u66f4\u9ad8\u5143（higher-arity）\u7684\u6267\u884c\u5219\u901a\u8fc7\u901a\u7528\u7684\u7edf\u4e00\u5411\u91cf\u5faa\u73af\u8fdb\u884c\u3002\u8fd9\u4e9b\u5b9e\u73b0\u72ec\u7acb\u5730\u89e3\u51b3\u4e86\u76f8\u540c\u7684\u8868\u793a\u3001\u6709\u6548\u6027（validity）\u548c\u9009\u62e9（selection）\u95ee\u9898\u3002\u8fd9\u4f7f\u5f97\u70ed\u8def\u5f84\u96be\u4ee5\u6301\u7eed\u4f18\u5316，\u4e5f\u610f\u5473\u7740\u4e00\u4e2a\u5ec9\u4ef7\u7684\u4e09\u5143\u64cd\u4f5c，\u5f53\u6bcf\u4e2a\u8f93\u5165\u90fd\u662f\u5e73\u5766\u6216\u5e38\u91cf\u65f6，\u4ecd\u7136\u8981\u4ed8\u51fa\u9009\u62e9\u5411\u91cf\u548c\u6bcf\u8f93\u5165\u6709\u6548\u6027\u68c0\u67e5\u7684\u5f00\u9500\u3002<\/p>\n

\u88ab\u8fdd\u53cd\u7684\u4e0d\u53d8\u5f0f\u5b58\u5728\u4e8e\u5411\u91cf\u6267\u884c\u5668\u5c42\u3002\u5143\u6570（arity）\u5e94\u8be5\u51b3\u5b9a\u53c2\u6570\u5982\u4f55\u5c55\u5f00\u4ee5\u53ca\u64cd\u4f5c\u5982\u4f55\u88ab\u8c03\u7528；\u5b83\u4e0d\u5e94\u8be5\u51b3\u5b9a\u54ea\u4e9b\u8868\u793a\u548c\u6709\u6548\u6027\u4f18\u5316\u662f\u53ef\u7528\u7684\u3002\u6211\u5c06\u90a3\u4e9b\u516c\u5171\u5de5\u4f5c\u79fb\u5230\u4e86\u4e00\u4e2a\u5185\u90e8\u7684 ScalarExecutor \u4e2d，\u5e76\u4fdd\u7559\u4e86 UnaryExecutor\u3001BinaryExecutor\u3001TernaryExecutor \u548c VariadicExecutor \u4f5c\u4e3a\u517c\u5bb9\u6027\u5916\u89c2（facade）\u3002\u5b83\u4eec\u73b0\u6709\u7684\u5165\u53e3\u70b9\u548c\u64cd\u4f5c\u7ea6\u5b9a\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n

\u5171\u4eab\u5f15\u64ce\u5c06\u6bcf\u4e2a\u8f93\u5165\u5206\u7c7b\u4e3a\u5e38\u91cf\u3001\u5e73\u5766\u6216\u901a\u7528（generic）\u3002\u5b83\u5bf9\u5168\u5e38\u91cf\u8f93\u5165\u6c42\u503c\u4e00\u6b21，\u901a\u8fc7\u5143\u6570\u4e09\u7279\u5316\u5e73\u5766\/\u5e38\u91cf\u63a9\u7801（mask），\u4e00\u6b21\u5904\u7406\u4e00\u4e2a\u673a\u5668\u5b57（a machine word at a time）\u5730\u7ec4\u5408\u6709\u6548\u6027，\u5e76\u5bf9\u5176\u4ed6\u8868\u793a\u56de\u9000\u5230 UnifiedVectorFormat\u3002\u5c0f\u578b\u9002\u914d\u5668\u4fdd\u7559\u4e86 lambda\u3001\u53ef\u9009\u8fd4\u56de\u3001\u4e00\u5143\u901a\u7528\/\u72b6\u6001\u3001\u4e00\u5143\u5b57\u7b26\u4e32\u3001\u4e8c\u5143\u5355\u7c7b\u578b\u3001\u4e8c\u5143\u5b8c\u5168\u7c7b\u578b\u5316\u548c\u53ef\u53d8\u9759\u6001\u64cd\u4f5c\u7ea6\u5b9a\u3002\u4e00\u5143\u5916\u89c2\u4fdd\u7559\u4e86\u5b57\u5178\u57df\u6c42\u503c\u548c\u5176 FunctionErrors::CANNOT_ERROR \u4fdd\u62a4，\u800c\u4e8c\u5143\u5916\u89c2\u4fdd\u7559\u4e86\u6bd4\u8f83-\u8865\u96c6\u6298\u53e0（comparison-complement folding）\u3002<\/p>\n

\u5bf9\u4e8e\u5b8c\u5168\u7edf\u4e00\u7684\u5916\u89c2，\u6709\u4e24\u4e2a\u7279\u610f\u7559\u51fa\u7684\u4f8b\u5916\u3002\u9996\u5148，\u521d\u59cb\u7684\u5171\u4eab\u4e8c\u5143\u4ec5\u771f\u503c（true-only）\u9009\u62e9\u5faa\u73af\u5728\u4e00\u4e2a\u6d4b\u91cf\u5230\u7684\u70ed\u8def\u5f84\u4e0a\u51fa\u73b0\u4e86\u6027\u80fd\u4e0b\u964d，\u56e0\u6b64\u6211\u4e3a\u8be5\u8f93\u51fa\u6a21\u5f0f\u4fdd\u7559\u4e86\u4e00\u4e2a\u72ed\u7a84\u7684\u4e8c\u5143\u7279\u5b9a\u5e73\u5766\u5faa\u73af\u3002\u5176\u6b21，\u5f53\u6240\u6709\u663e\u5f0f\u8f93\u5165\u90fd\u6709\u6548\u65f6，\u4e00\u5143\u6267\u884c\u4fdd\u7559\u4e86\u4e00\u4e2a\u9884\u586b\u5145\u7684\u7ed3\u679c\u6709\u6548\u6027\u63a9\u7801\u3002Arrow \u6269\u5c55\u8f6c\u6362\u4f9d\u8d56\u4e8e\u8fd9\u4e2a\u73b0\u6709\u5951\u7ea6：\u5b83\u5728\u8f6c\u6362\u4e00\u4e2a\u5168\u90e8\u6709\u6548\u7684\u4e34\u65f6\u5b58\u50a8\u5411\u91cf\u4e4b\u524d，\u4f1a\u5c06 Arrow NULL \u63a9\u7801\u653e\u7f6e\u5728\u7ed3\u679c\u4e0a\u3002\u53ef\u4ee5\u6dfb\u52a0 NULL \u7684\u64cd\u4f5c\u4f1a\u5728\u4fee\u6539\u8be5\u63a9\u7801\u4e4b\u524d\u590d\u5236\u5b83\u3002\u4e09\u5143\u548c\u53ef\u53d8\u53c2\u6570\u6267\u884c\u4e0d\u4f1a\u4fdd\u7559\u65e7\u7684\u7ed3\u679c\u63a9\u7801，\u56e0\u6b64\u88ab\u91cd\u7528\u7684\u7ed3\u679c\u4ecd\u7136\u4f1a\u6e05\u9664\u90a3\u91cc\u7684\u8fc7\u65f6 NULL\u3002\u5168\u5e38\u91cf\u8def\u5f84\u4e5f\u4f1a\u663e\u5f0f\u6e05\u9664\u6709\u6548\/NULL\/\u6709\u6548\u91cd\u7528\u72b6\u6001\u3002<\/p>\n

\u6211\u9650\u5236\u4e86\u7279\u5316，\u56e0\u4e3a\u5b9e\u4f8b\u5316\u6bcf\u79cd\u63a9\u7801\u548c\u6bcf\u79cd\u9009\u62e9-\u8f93\u51fa\u7684\u7ec4\u5408，\u5176\u4ee3\u4ef7\u5f88\u5feb\u5c31\u8d85\u8fc7\u4e86\u8fd0\u884c\u65f6\u7684\u6536\u76ca\u3002\u6267\u884c\u901a\u8fc7\u5143\u6570\u4e09\u7279\u5316\u7b97\u672f\u8f93\u5165\u3002\u53ef\u53d8\u53c2\u6570\u9009\u62e9\u4ec5\u7279\u5316\u5168\u5e73\u5766\u63a9\u7801，\u5e76\u5728\u8fd0\u884c\u65f6\u8c03\u5ea6\u8f93\u51fa\u5b58\u5728\u6027（output presence）；\u6dfb\u52a0\u6240\u6709\u4e09\u5143\u9009\u62e9\u63a9\u7801\u4f1a\u4f7f\u6587\u672c\u589e\u52a0\u8d85\u8fc7 1 MiB，\u5374\u6ca1\u6709\u76f8\u5e94\u7684\u53ef\u6d4b\u91cf\u6536\u76ca\u3002DUCKDB_SMALLER_BINARY \u53ef\u4ee5\u901a\u8fc7\u73b0\u6709\u7684 vector_specialization \u7ec4\u4e2d\u65b0\u7684 variadic_executor_select_flat \u529f\u80fd\u6765\u79fb\u9664\u8fd9\u79cd\u7279\u5316\u3002<\/p>\n

\u540e\u7eed\u7684\u5ba1\u67e5\u8fd8\u66b4\u9732\u4e86 duckdb\/duckdb#24391 \u4e2d\u5c0f\u7684\u4e8c\u5143\u6267\u884c\u5668\u53d8\u66f4\u3002\u6211\u5df2\u7ecf\u4ece\u5e73\u5766\/\u5e38\u91cf\u7279\u5316\u4e2d\u79fb\u9664\u4e86\u9009\u62e9\u67e5\u627e（selection lookup），\u4f46\u5168\u6709\u6548（all-valid）\u7684\u901a\u7528\u56de\u9000\u8def\u5f84\u4ecd\u7136\u5728\u6bcf\u884c\u4e0a\u4e3a\u4e24\u4e2a\u8f93\u5165\u8c03\u7528 SelectionVector::get_index()\u3002\u6211\u5728\u5171\u4eab\u5f15\u64ce\u8fb9\u754c\u96c6\u6210\u4e86\u540c\u6837\u7684\u601d\u8def：\u4e8c\u5143\u5916\u89c2\u4e3a\u6bcf\u4e2a\u5411\u91cf\u5206\u6d3e\u56db\u79cd\u8f93\u5165\u9009\u62e9\u63a9\u7801\u4e00\u6b21，\u7136\u540e\u6bcf\u4e2a\u5faa\u73af\u4f7f\u7528\u4e00\u4e2a\u6052\u7b49\u7d22\u5f15\u6216\u539f\u59cb\u9009\u62e9\u6570\u636e\u3002\u8fd9\u76ee\u524d\u6709\u610f\u4ec5\u9650\u4e8e\u4e8c\u5143，\u5e76\u7531 vector_specialization \u7684 smaller-binary \u7ec4\u4e2d\u4e00\u4e2a\u72ec\u7acb\u7684 binary_executor_generic_no_null \u529f\u80fd\u63a7\u5236\u3002<\/p>\n

\u6211\u9488\u5bf9\u57fa\u4e8e daa81697e31a3dc97a93f11220037cd2213af6cd \u63d0\u4ea4\u7684\u7248\u672c，\u5728 arm64 macOS 26.5 \u4e0a\u4f7f\u7528 Apple Clang 21\u3001\u53d1\u5e03\u4f18\u5316，\u5e76\u5728\u7981\u7528\u7f16\u8bd1\u5668\u542f\u52a8\u5668（launcher）\u7684\u60c5\u51b5\u4e0b，\u8fdb\u884c\u4e86\u9694\u79bb\u7684\u57fa\u7ebf\/\u5019\u9009\u6784\u5efa\u6d4b\u8bd5\u3002\u76f4\u63a5\u7684\u6267\u884c\u5668\u57fa\u51c6\u6d4b\u8bd5\u4f7f\u7528\u4e00\u4e2a\u6807\u51c6\u5927\u5c0f\u7684\u5411\u91cf，\u5e76\u5bf9\u975e\u6052\u5b9a\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u4e00\u767e\u4e07\u6b21\u8fdb\u7a0b\u5185\u8fed\u4ee3\u3002\u914d\u5bf9\u7684\u8fdb\u7a0b\u7ea7\u6d4b\u91cf\u663e\u793a：\u4e00\u5143\u5e73\u5766（923.3 \u6beb\u79d2 \u5bf9\u6bd4 919.0 \u6beb\u79d2）\u3001\u4e00\u5143\u5b57\u5178（3.116 \u79d2 \u5bf9\u6bd4 3.128 \u79d2）\u3001\u4e8c\u5143\u5e73\u5766\/\u5e73\u5766（1.248 \u79d2 \u5bf9\u6bd4 1.262 \u79d2）\u4ee5\u53ca\u4e8c\u5143\u5e73\u5766\/\u5e38\u91cf\u548c\u5e38\u91cf\/\u5e73\u5766\u6301\u5e73\u6216\u7565\u5feb\u3002\u4fdd\u7559\u7684\u4e8c\u5143\u4ec5\u771f\u503c\u9009\u62e9\u8def\u5f84\u5728\u516b\u4e2a\u8fdb\u7a0b\u5185\u6837\u672c\u4e2d，\u6bd4\u56fa\u5b9a（pinned）\u5b9e\u73b0\u5feb\u4e86\u7ea6 1%\u3002<\/p>\n

\u6211\u4e3a\u901a\u7528\u7684\u65e0 NULL \u8def\u5f84\u6dfb\u52a0\u4e86\u76f4\u63a5\u7684\u5b57\u5178\/\u5e73\u5766\u3001\u5e73\u5766\/\u5b57\u5178\u548c\u5b57\u5178\/\u5b57\u5178\u4e8c\u5143\u6848\u4f8b\u3002\u5728\u8fd9\u53f0 arm64 \u673a\u5668\u4e0a，\u5b83\u4eec\u5206\u522b\u6d4b\u5f97 3.484 \u79d2 \u5bf9\u6bd4 3.541 \u79d2\u30013.502 \u79d2 \u5bf9\u6bd4 3.529 \u79d2 \u548c 4.264 \u79d2 \u5bf9\u6bd4 4.263 \u79d2，\u90fd\u5728 2% \u7684\u8c03\u67e5\u9608\u503c\u5185\u3002\u4fdd\u7559\u8be5\u7279\u5316\u7684\u539f\u56e0\u662f\u9488\u5bf9\u7279\u5b9a\u76ee\u6807（\u5982\u6fc0\u53d1\u4e86 #24391 \u7684 x86-64-v3 \u914d\u7f6e）\u7684\u751f\u6210\u4ee3\u7801\u8d28\u91cf：Clang \u4e3a\u672a\u9009\u62e9\u7684\u4e00\u4fa7\u53d1\u51fa\u987a\u5e8f\u52a0\u8f7d（sequential load），\u4e3a\u6bcf\u4e2a\u88ab\u9009\u62e9\u7684\u4e00\u4fa7\u53d1\u51fa\u6070\u597d\u4e00\u6b21\u539f\u59cb\u9009\u62e9\u52a0\u8f7d，\u4e14\u5728\u884c\u5faa\u73af\u4e2d\u6ca1\u6709\u8fd0\u884c\u65f6\u9009\u62e9\u5b58\u5728\u6027（selection-presence）\u5206\u652f\u3002\u6211\u65e0\u6cd5\u5728\u8fd9\u53f0 arm64 \u4e3b\u673a\u4e0a\u9a8c\u8bc1 x86\/AVX \u7684\u7ed3\u679c\u3002<\/p>\n

\u5ec9\u4ef7\u7684（Cheap）\u4e09\u5143\u6267\u884c\u662f\u8fd9\u6b21\u6574\u5408\u5e26\u6765\u6536\u76ca\u7684\u5730\u65b9\u3002\u516d\u79cd\u6df7\u5408\u5e73\u5766\/\u5e38\u91cf\u914d\u7f6e\u7684\u6027\u80fd\u63d0\u5347\u4e86 21% \u5230 69%，\u800c\u5e73\u5766\/\u5e73\u5766\/\u5e73\u5766\u63d0\u5347\u4e86\u7ea6 2%\u3002\u5168\u5e73\u5766\u4e09\u5143\u9009\u62e9\u4ece 7.060 \u79d2\u63d0\u5347\u5230 4.894 \u79d2，\u5373 1.44 \u500d\u3002\u4e00\u6b21\u5904\u7406\u4e00\u4e2a\u5b57（word-at-a-time）\u7684\u6709\u6548\u6027\u5904\u7406\u4e5f\u663e\u8457\u6539\u5584\u4e86\u9ad8 NULL \u6bd4\u4f8b\u7684\u4e09\u5143\u6848\u4f8b：50% NULL \u7684\u6848\u4f8b\u4ece 1.957 \u79d2\u964d\u81f3 0.076 \u79d2，99% NULL \u7684\u6848\u4f8b\u4ece 1.833 \u79d2\u964d\u81f3 0.076 \u79d2，\u6709\u6548\u6027\u5b57\u5927\u5c0f\u7c07（validity-word-sized clusters）\u4ece 2.838 \u79d2\u964d\u81f3 0.355 \u79d2\u3002\u91c7\u6837\u548c\u706b\u7130\u56fe（flamegraph）\u53d1\u73b0\u4e86\u4e00\u4e2a\u6700\u521d\u672a\u5185\u8054\u7684\u4e00\u5143\u6709\u6548\u6027\u8f85\u52a9\u51fd\u6570；\u4fee\u590d\u8be5\u95ee\u9898\u540e，50% NULL \u7684\u4e00\u5143\u6848\u4f8b\u8fbe\u5230\u4e86\u6301\u5e73（3.152 \u79d2 \u5bf9\u6bd4 3.132 \u79d2）\u3002<\/p>\n

\u4e00\u4e2a\u53ef\u89c1\u7684\u5fae\u57fa\u51c6\u6d4b\u8bd5\u6743\u8861\u662f\u5168\u5e38\u91cf\u4e8c\u5143\u6848\u4f8b\u3002\u5b83\u5927\u7ea6\u6162\u4e86 3.3%，\u56e0\u4e3a\u65b0\u8def\u5f84\u5728\u4ea7\u751f\u6709\u6548\u7ed3\u679c\u4e4b\u524d\u4f1a\u6e05\u9664\u8fc7\u65f6\u7684\u5e38\u91cf\u6709\u6548\u6027，\u800c\u56fa\u5b9a\u5b9e\u73b0\u7701\u7565\u4e86\u8fd9\u4e00\u6b65\u3002\u8fd9\u662f\u6bcf\u5411\u91cf\u4e00\u6b21\u64cd\u4f5c，\u800c\u975e\u6bcf\u884c\u5faa\u73af\u64cd\u4f5c，\u6211\u9009\u62e9\u4e86\u786e\u5b9a\u6027\u7684\u6709\u6548\/NULL\/\u6709\u6548\u884c\u4e3a，\u800c\u4e0d\u662f\u4fdd\u7559\u90a3\u5fae\u5c0f\u7684\u5e38\u91cf\u8c03\u5ea6\u5dee\u5f02\u3002<\/p>\n

\u5bf9\u4e8e\u5e38\u89c4\u53d1\u5e03\u6784\u5efa，\u5265\u79bb\u4e86\u672c\u5730\u7b26\u53f7\u7684 libduckdb \u4ece 45,252,216 \u5b57\u8282\u51cf\u5c11\u5230 45,024,160 \u5b57\u8282（-0.50%），\u5e76\u4e14 __text \u6bb5\u51cf\u5c11\u4e86 0.90%\u3002smaller-binary \u7684\u7ed3\u679c\u5219\u4e0d\u592a\u6709\u5229：\u5265\u79bb\u540e\u7684\u5e93\u4ece 37,010,320 \u5b57\u8282\u589e\u957f\u5230 37,408,584 \u5b57\u8282（+1.08%），__text \u589e\u957f\u4e86 1.33%\u3002\u901a\u7528\u7684\u5171\u4eab\u5f15\u64ce\u5373\u4f7f\u4fee\u526a\u4e86\u6240\u6709 30 \u4e2a\u7279\u5316\u529f\u80fd\u540e，\u4ecd\u7136\u6709\u56fa\u5b9a\u6210\u672c；\u6211\u6ca1\u6709\u8bd5\u56fe\u901a\u8fc7\u66f4\u591a\u7684\u9884\u5904\u7406\u5668\u590d\u5236\u6765\u9690\u85cf\u8fd9\u4e2a\u6210\u672c\u3002\u4e0e\u4fdd\u7559\u8fd9\u56db\u4e2a\u63a9\u7801\u76f8\u6bd4，\u5c06\u65b0\u7684\u4e8c\u5143\u901a\u7528\u7279\u5316\u4fdd\u7559\u5728 vector_specialization \u7ec4\u4e2d，\u5927\u7ea6\u4ece\u5b8c\u5168 smaller \u5265\u79bb\u5e93\u4e2d\u8282\u7701\u4e86 133 KiB\u3002<\/p>\n

@kryonix
\n\u7edf\u4e00\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd
\ncaffec8<\/p>\n","protected":false},"excerpt":{"rendered":"

\u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd – #24564
\n\u5bf9\u8bdd
\nkryonix
\nkryonix
\n\u8bc4\u8bba\u4e8e
\n24 \u5206\u949f\u524d
\n\u6210\u5458
\n\u6211\u9047\u5230\u4e86 DuckDB \u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u4e00\u4e2a\u5206\u88c2：\u4e00\u5143\u548c\u4e8c\u5143\u6267\u884c\u6709\u7cbe\u5fc3\u7279\u5316\u7684\u5e73\u5766（flat）\u548c\u5e38\u91cf（constant）\u8def\u5f84，\u800c\u4e09\u5143\u53ca\u66f4\u9ad8\u5143（higher-arity）\u7684\u6267\u884c\u5219\u901a\u8fc7\u901a\u7528\u7684\u7edf\u4e00\u5411\u91cf\u5faa\u73af\u8fdb\u884c\u3002\u8fd9\u4e9b\u5b9e\u73b0\u72ec\u7acb\u5730\u89e3\u51b3\u4e86\u76f8\u540c\u7684\u8868\u793a\u3001\u6709\u6548\u6027&#xf<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10187,768,190,2330,100],"topic":[],"class_list":["post-91075","post","type-post","status-publish","format-standard","hentry","category-server","tag-codingplan","tag-sql","tag-190","tag-2330","tag-100"],"yoast_head":"\nkryonix\u63d0\u4ea4\u7684DuckDB \u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd - 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#24564 PR - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/91075.html","og_locale":"zh_CN","og_type":"article","og_title":"kryonix\u63d0\u4ea4\u7684DuckDB \u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd - #24564 PR - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd - #24564 \u5bf9\u8bdd kryonix kryonix \u8bc4\u8bba\u4e8e 24 \u5206\u949f\u524d \u6210\u5458 \u6211\u9047\u5230\u4e86 DuckDB \u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd\u4e2d\u7684\u4e00\u4e2a\u5206\u88c2：\u4e00\u5143\u548c\u4e8c\u5143\u6267\u884c\u6709\u7cbe\u5fc3\u7279\u5316\u7684\u5e73\u5766（flat）\u548c\u5e38\u91cf（constant）\u8def\u5f84，\u800c\u4e09\u5143\u53ca\u66f4\u9ad8\u5143（higher-arity）\u7684\u6267\u884c\u5219\u901a\u8fc7\u901a\u7528\u7684\u7edf\u4e00\u5411\u91cf\u5faa\u73af\u8fdb\u884c\u3002\u8fd9\u4e9b\u5b9e\u73b0\u72ec\u7acb\u5730\u89e3\u51b3\u4e86\u76f8\u540c\u7684\u8868\u793a\u3001\u6709\u6548\u6027&#xf","og_url":"https:\/\/www.wsisp.com\/helps\/91075.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-08-06T11:41:12+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/91075.html","url":"https:\/\/www.wsisp.com\/helps\/91075.html","name":"kryonix\u63d0\u4ea4\u7684DuckDB \u7edf\u4e00\u5e76\u4f18\u5316\u6807\u91cf\u6267\u884c\u5668\u57fa\u7840\u8bbe\u65bd - 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