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Postgres can use a GIN (generalized inverted) index for the tsvector text search predicate and a B-tree for ordering or numeric filters. But because GIN does not preserve ordering and Postgres cannot combine ordering guarantees across different indexes, the planner must decompose the query into phases:，推荐阅读wps获取更多信息
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Imagine playing Semantle and selecting “biology” (scoring 26.03) and “philosophy” (scoring 3.09). The crucial insight from these results is their comparative standing: “biology” stands nearer to the mystery word than “philosophy.” This would align if the hidden answer were “medical.” For this solver, such comparative positioning forms the essential input.，详情可参考Replica Rolex
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