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system-tables: add a description for columns#3459

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zimulala merged 5 commits into
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zimulala:infoschema
Jun 8, 2020
Merged

system-tables: add a description for columns#3459
zimulala merged 5 commits into
pingcap:masterfrom
zimulala:infoschema

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@zimulala zimulala commented Jun 2, 2020

What is changed, added or deleted? (Required)

Add descriptions of columns in "COLUMNS","ENGINES" and "KEY_COLUMN_USAGE" tables.

Which TiDB version(s) do your changes apply to? (Required)

  • master (the latest development version)
  • v4.0 (TiDB 4.0 versions)
  • v3.1 (TiDB 3.1 versions)
  • v3.0 (TiDB 3.0 versions)
  • v2.1 (TiDB 2.1 versions)

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  • This PR is translated from:
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Comment thread system-tables/system-table-information-schema.md Outdated
Comment thread system-tables/system-table-information-schema.md Outdated
Comment thread system-tables/system-table-information-schema.md Outdated
Comment thread system-tables/system-table-information-schema.md Outdated
@TomShawn TomShawn added needs-cherry-pick-3.1 translation/doing This PR’s assignee is translating this PR. labels Jun 3, 2020
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zimulala commented Jun 5, 2020

PTAL @tangenta @djshow832

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LGTM

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zimulala commented Jun 8, 2020

PTAL @ran-huang

* `TABLE_NAME`:具有约束的表的名称。
* `COLUMN_NAME`:具有约束的列的名称。
* `ORDINAL_POSITION`:列在约束中的位置,而不是列在表中的位置。列位置从 1 开始编号。
* `POSITION_IN_UNIQUE_CONSTRAINT`:唯一和主键约束为空。对于外键约束,此列是被引用的表的键的序号位置。
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唯一和主键约束为空 是指 唯一约束主键约束 吗?

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Comment thread system-tables/system-table-information-schema.md Outdated
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zimulala commented Jun 8, 2020

PTAL @ran-huang

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LGTM

@zimulala zimulala merged commit 4f2b827 into pingcap:master Jun 8, 2020
@zimulala zimulala deleted the infoschema branch June 8, 2020 11:46
sre-bot pushed a commit to sre-bot/docs-cn that referenced this pull request Jun 8, 2020
Signed-off-by: sre-bot <sre-bot@pingcap.com>
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sre-bot commented Jun 8, 2020

cherry pick to release-3.0 in PR #3565

sre-bot pushed a commit to sre-bot/docs-cn that referenced this pull request Jun 8, 2020
Signed-off-by: sre-bot <sre-bot@pingcap.com>
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sre-bot commented Jun 8, 2020

cherry pick to release-3.1 in PR #3566

sre-bot pushed a commit to sre-bot/docs-cn that referenced this pull request Jun 8, 2020
Signed-off-by: sre-bot <sre-bot@pingcap.com>
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sre-bot commented Jun 8, 2020

cherry pick to release-4.0 in PR #3567

sre-bot added a commit that referenced this pull request Jun 8, 2020
Signed-off-by: sre-bot <sre-bot@pingcap.com>

Co-authored-by: Lynn <zimu_xia@126.com>
Co-authored-by: Ran <huangran@pingcap.com>
sre-bot added a commit that referenced this pull request Jun 8, 2020
Signed-off-by: sre-bot <sre-bot@pingcap.com>

Co-authored-by: Lynn <zimu_xia@126.com>
Co-authored-by: Ran <huangran@pingcap.com>
sre-bot added a commit that referenced this pull request Jun 8, 2020
Signed-off-by: sre-bot <sre-bot@pingcap.com>

Co-authored-by: Lynn <zimu_xia@126.com>
Co-authored-by: Ran <huangran@pingcap.com>
@ran-huang ran-huang added translation/done This PR has been translated from English into Chinese and updated to pingcap/docs-cn in a PR. and removed translation/doing This PR’s assignee is translating this PR. labels Jun 17, 2020
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