pingcap/tidb

`show bindings` returns session bindings and global bindings

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#16,747 opened on Apr 23, 2020

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

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Description

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.

Contributor guide

Research direction
Locate the SQL parsing and execution code for `show bindings` in the TiDB codebase, specifically in the bindings package. Modify the logic so that `show bindings` returns the union of session and global bindings, similar to how `show session bindings` currently works but with an additional query to global bindings.
Tech stack
go
Domain
backenddatabase
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Go
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65