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ddl: support altering the other charset to utf8 or utf8mb4 #8037

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merged 28 commits into from
Dec 10, 2018
Merged

ddl: support altering the other charset to utf8 or utf8mb4 #8037

merged 28 commits into from
Dec 10, 2018

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winkyao
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@winkyao winkyao commented Oct 24, 2018 •
edited by c4pt0r
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What problem does this PR solve?

fix #7920.

Support changing the other charset to utf8 or utf8mb4.

Rules is:

  1. change any other charset to utf8mb4 is permitted, because TiDB treat all data as utf8mb4
  2. change any other charset to utf8 is permitted, except utf8mb4.

Before this PR, alter table charset take no effects, we just parse it and ignore, in this PR, we change the charset and collate of tableInfo in the infoSchema.

Tests

  • Unit test
  • Integration test

Code changes

  • Has exported function/method change

Side effects

  • Increased code complexity

Related changes

  • Need to update the documentation
  • Need to be included in the release note

This change is Reviewable

@winkyao winkyao added component/DDL-need-LGT3 release-note Denotes a PR that will be considered when it comes time to generate release notes. labels Oct 24, 2018
@winkyao winkyao changed the title ddl: support alter the other charset to utf8 or utf8mb4 ddl: support altering the other charset to utf8 or utf8mb4 Oct 24, 2018
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shenli commented Oct 28, 2018

Please resolve the conflicts.

@winkyao winkyao mentioned this pull request Nov 5, 2018
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winkyao commented Nov 5, 2018

Ci will be fixed, after the pr pingcap/parser#14 merged.

@tiancaiamao
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Please make sure the change works
https://github.com/pingcap/parser#how-to-update-parser-for-tidb

@winkyao winkyao dismissed a stale review via bc7b5e3 December 3, 2018 02:22
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PTAL @ciscoxll @crazycs520 @zimulala

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winkyao commented Dec 7, 2018

@zimulala PTAL

ciscoxll
ciscoxll reviewed Dec 7, 2018
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Mostly LGTM

ciscoxll
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LGTM

@ciscoxll ciscoxll added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Dec 7, 2018
zimulala
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winkyao commented Dec 7, 2018

@zimulala PTAL

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LGTM

@zimulala zimulala added status/LGT3 The PR has already had 3 LGTM. and removed status/LGT2 Indicates that a PR has LGTM 2. labels Dec 10, 2018
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/run-all-tests

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winkyao commented Dec 10, 2018

/run-common-test -tidb-test=pr/684

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/run-common-test -tidb-test=pr/684

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winkyao commented Dec 10, 2018

/run-integration-ddl-test -tidb-test=pr/684

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winkyao commented Dec 10, 2018

/run-integration-common-test -tidb-test=pr/684

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winkyao commented Dec 10, 2018

/run-integration-compatibility-test -tidb-test=pr/684

@winkyao winkyao merged commit 1d7d01c into pingcap:master Dec 10, 2018
@winkyao winkyao deleted the support_change_charset_utf8 branch December 10, 2018 04:58
@winkyao winkyao mentioned this pull request Dec 10, 2018
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iamzhoug37 pushed a commit to iamzhoug37/tidb that referenced this pull request Dec 13, 2018
@winkyao @iamzhoug37
ddl: support altering the other charset to utf8 or utf8mb4 (pingcap#8037
d1749b6 
)
crazycs520 pushed a commit to crazycs520/tidb that referenced this pull request Jan 5, 2019
@winkyao @crazycs520
ddl: support altering the other charset to utf8 or utf8mb4 (pingcap#8037
cdfe76c 
)
@crazycs520 crazycs520 mentioned this pull request Jan 5, 2019
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jackysp pushed a commit that referenced this pull request Jan 7, 2019
@crazycs520 @jackysp
ddl: support altering the other charset to utf8 or utf8mb4 (#8037) (#…
665db64 
…8951)
@you06 you06 added the sig/sql-infra SIG: SQL Infra label Mar 4, 2020
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@zimulala zimulala zimulala approved these changes

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Change default charset and collation from utf8 to utf8mb4
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@winkyao @shenli @tiancaiamao @zimulala @zhouqiang-cl @jackysp @ciscoxll @crazycs520 @you06