Tag Archives: dbms

PostgreSQL 9.5 將會有 Parallel Sequential Scan

在「Parallel Sequential Scan is Committed!」這邊看到 PostgreSQL 9.5 (還沒出) 將會有 Parallel Sequential Scan 的功能。 文章的作者直接拿了一個大家超常用的惡搞來示範,也就是經典的 LIKE '%word%': rhaas=# \timing Timing is on. rhaas=# select * from pgbench_accounts where filler like '%a%'; aid | bid | abalance | filler -----+-----+----------+-------- (0 rows) … Continue reading

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