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使用太记桌面版同步
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Gezi-lzq committed Jan 1, 2025
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created: 20250101161116458
creator: Gezi-lzq
modified: 20250101161155452
modifier: Gezi-lzq
tags: 大数据
title: predicate pushdown

在数据存储和查询优化中,"predicate pushdown" 是一种优化技术,涉及在数据库查询过程中尽量在查询早期阶段进行过滤条件的应用,以减少不必要的数据扫描和处理。这个过程通常发生在存储引擎层面,查询引擎将过滤条件(谓词)下推到数据源以尽量减少返回的数据量。

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