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ddl: support specifying expr rand() as column default value #32608

Merged
merged 32 commits into from
Apr 7, 2022
Merged

ddl: support specifying expr rand() as column default value #32608

merged 32 commits into from
Apr 7, 2022

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CbcWestwolf
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@CbcWestwolf CbcWestwolf commented Feb 24, 2022 •
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What problem does this PR solve?

Issue Number: close #10377

Problem Summary:

Now TiDB only supports nextVal(), now()/current_timestamp() and literal value as a column's default value.

What is changed and how it works?

Implement rand() as a default value.

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

None

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ti-chi-bot commented Feb 24, 2022 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • tangenta
  • xiongjiwei

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. labels Feb 24, 2022
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sre-bot commented Feb 28, 2022 •
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Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/299bf2e2d88be752340ea135252886c656e29383

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/run-mysql-test

@ti-chi-bot ti-chi-bot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Mar 5, 2022
@CbcWestwolf CbcWestwolf force-pushed the column_default_expr branch from bfb05d2 to 1720c3e Compare March 29, 2022 12:55
@ti-chi-bot ti-chi-bot removed the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Mar 29, 2022
@CbcWestwolf CbcWestwolf marked this pull request as ready for review March 29, 2022 13:09
@ti-chi-bot ti-chi-bot removed the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Mar 29, 2022
@CbcWestwolf CbcWestwolf changed the title ddl: supporting create table or alter column with default expression ddl: supporting create table or alter column with default rand() Mar 29, 2022
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/cc tangenta xiongjiwei

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please fix the test

xiongjiwei
xiongjiwei reviewed Mar 31, 2022
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xiongjiwei
xiongjiwei reviewed Mar 31, 2022
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please also add some tests in parser

@tangenta tangenta changed the title ddl: supporting create table or alter column with default rand() ddl: support specifying expr rand() as column default value Apr 6, 2022
@CbcWestwolf CbcWestwolf requested a review from tangenta April 6, 2022 08:31
@CbcWestwolf CbcWestwolf force-pushed the column_default_expr branch from 5bc2406 to f9d0aae Compare April 6, 2022 08:44
tangenta
tangenta reviewed Apr 7, 2022
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tangenta commented Apr 7, 2022

Rest LGTM

@CbcWestwolf @tangenta
Update ddl/ddl_api.go
a289bdb 
Co-authored-by: tangenta <tangenta@126.com>
@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Apr 7, 2022
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tangenta commented Apr 7, 2022

/merge

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This pull request has been accepted and is ready to merge.

Commit hash: a289bdb

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Apr 7, 2022
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@CbcWestwolf: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

@ti-chi-bot ti-chi-bot merged commit a936646 into pingcap:master Apr 7, 2022
@CbcWestwolf CbcWestwolf deleted the column_default_expr branch April 7, 2022 08:21
@dveeden dveeden mentioned this pull request Jul 21, 2023
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@dveeden dveeden mentioned this pull request Dec 13, 2024
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@xiongjiwei xiongjiwei xiongjiwei approved these changes

@tangenta tangenta tangenta approved these changes

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Successfully merging this pull request may close these issues.

Incompatible with MySQL 8.0 about create table with default expression
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@CbcWestwolf @ti-chi-bot @sre-bot @xiongjiwei @tangenta