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项目描述

PostgreSQL executes queries using cost-based optimizer, and sometimes fails to choose most optimized execution plan or some types of queries. In such cases, pg_hint_plan helps users to guide the planner to choose the plans they want by putting some nstructions - call them hints - in the comments prefixed to the SQL statement body. No need to rewrite statement tself nor change some GUC parameters elsewhere.

系统要求

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发布: 2017-05-19 15:26
pg_hint_plan for PostgreSQL 9.5 1.1.4 (3 files 隐藏)

发布版本通知

pg_hint_plan 1.1.4 released.

  • A bug that a crash can be caused by SQL queries involving rather complex views or SQL functions. You can easily find the bug by the following steps.
    • CREATE EXTENSION pg_hint_plan;
    • SET pg_hint_plan.enable_hint_table TO on;
    • SELECT * FROM information_schema.columns;

pg_hint_plan 1.1.4 リリースします。

  • 比較的複雑なビューやSQL関数を含むクエリを実行するとサーバーがクラッシュする可能性があります。これは以下の手順で再現できます。
    • CREATE EXTENSION pg_hint_plan;
    • SET pg_hint_plan.enable_hint_table TO on;
    • SELECT * FROM information_schema.columns;

变更日志

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