pingcap/tidb

`show bindings` returns session bindings and global bindings

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#16,747 建立於 2020年4月23日

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component/bindinfoepic/sql-plan-managementfeature/acceptedhelp wantedtype/feature-request

描述

Feature Request

We have three ways to get bindings:

show bindings;
show session bindings;
show global bindings;

For now, show bindings is equivalent to show session bindings, we'd better to make show bindings return both session bindings and global bindings.

貢獻者指南

技術棧
gosql
領域
databasebackend
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Go programmingSQL execution contextTiDB binding internals
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
35
研究方向
The issue requests that 'show bindings' return both session and global bindings instead of only session bindings. Investigate the current implementation of 'show bindings' in the TiDB codebase, likely in the executor package (e.g., show executor.go or similar). Look at how 'show session bindings' and 'show global bindings' are handled separately. The change likely involves modifying the executor to merge results from both sources. Check if there are any existing tests for these commands in the test suite. The ticket has no linked PRs or recent activity, so it is available but may require familiarization with the bindings management system.