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Add summary changes for recent PRs #14598

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merged 1 commit into from
Nov 27, 2023
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Description

This PR fixes the summary changes for the recent PRs -

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  • "Backport to:" labels have been added if this change should be back-ported
  • Tests were added or are not required
  • Did the new or modified tests pass consistently locally and on the CI
  • Documentation was added or is not required

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@GuptaManan100 GuptaManan100 added Type: Documentation Component: General Changes throughout the code base labels Nov 24, 2023
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vitess-bot bot commented Nov 24, 2023

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Hello reviewers! 👋 Please follow this checklist when reviewing this Pull Request.

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  • Ensure that the Pull Request has a descriptive title.
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@vitess-bot vitess-bot bot added NeedsDescriptionUpdate The description is not clear or comprehensive enough, and needs work NeedsIssue A linked issue is missing for this Pull Request NeedsWebsiteDocsUpdate What it says labels Nov 24, 2023
@github-actions github-actions bot added this to the v19.0.0 milestone Nov 24, 2023
@GuptaManan100 GuptaManan100 removed NeedsDescriptionUpdate The description is not clear or comprehensive enough, and needs work NeedsWebsiteDocsUpdate What it says NeedsIssue A linked issue is missing for this Pull Request labels Nov 24, 2023
@frouioui frouioui merged commit 4ddce5f into vitessio:main Nov 27, 2023
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@frouioui frouioui deleted the summary-changes branch November 27, 2023 15:20

#### <a id="fk-checks-vitess-aware"/>`FOREIGN_KEY_CHECKS` is now a Vitess Aware Variable

When VTGate receives a query to change the `FOREIGN_KEY_CHECKS` value for a session, instead of sending the value down to MySQL, VTGate now keeps track of the value and changes the queries by adding `SET_VAR(FOREIGN_KEY_CHECKS=On/Off)` style query optimizer hints wherever required.
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What happens with MySQL 5.7? We haven't yet dropped support. Are we saying the new FK functionality is only supported on MySQL 8.0? That is acceptable, but we should state it clearly.

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Oh! That is a very good point! That actually prompted #14631

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Adding docs changes as discussed - #14663

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4 participants