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executor: fix a bug that can not insert null into a not null column in the empty SQL mode #21237

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merged 7 commits into from
Dec 25, 2020

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Signed-off-by: wjhuang2016 huangwenjun1997@gmail.com

What problem does this PR solve?

Issue Number: close #11648

Problem Summary:

What is changed and how it works?

Set BadNullAsWarning to True if not StrictSQLMode.

Related changes

  • Need to cherry-pick to the release branch

Check List

Tests

  • Unit test

Side effects

Release note

  • fix a bug that can not insert null into a not null column in the empty SQL mode

Signed-off-by: wjhuang2016 <huangwenjun1997@gmail.com>
@wjhuang2016 wjhuang2016 requested a review from a team as a code owner November 24, 2020 03:50
@wjhuang2016 wjhuang2016 requested review from SunRunAway and removed request for a team November 24, 2020 03:50
tk.MustExec("create table t (id int NOT NULL DEFAULT 8);")
tk.MustExec("SET sql_mode = '';")
tk.MustExec("insert into t values (1), (NULL), (2);")
tk.MustQuery("select * from t").Check(testkit.Rows("1", "0", "2"))
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Please check the warning for this query.

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insert into t values (1), (NULL), (2);

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MySQL reports an error if insert NULL only ...

Signed-off-by: wjhuang2016 <huangwenjun1997@gmail.com>
Signed-off-by: wjhuang2016 <huangwenjun1997@gmail.com>
@wjhuang2016 wjhuang2016 added type/bugfix This PR fixes a bug. and removed status/WIP labels Dec 24, 2020
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LGTM

@ti-srebot ti-srebot added the status/LGT1 Indicates that a PR has LGTM 1. label Dec 24, 2020
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LGTM

@ti-srebot ti-srebot removed the status/LGT1 Indicates that a PR has LGTM 1. label Dec 24, 2020
@ti-srebot ti-srebot added the status/LGT2 Indicates that a PR has LGTM 2. label Dec 24, 2020
@jackysp jackysp added the compatibility-breaker Violation of forwards/backwards compatibility in a design-time piece. label Dec 24, 2020
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/merge

@ti-srebot ti-srebot added the status/can-merge Indicates a PR has been approved by a committer. label Dec 24, 2020
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/run-all-tests

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@wjhuang2016 merge failed.

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/merge

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/run-all-tests

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@wjhuang2016 merge failed.

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/run-e2e-test

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/merge

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/run-all-tests

@ti-srebot ti-srebot merged commit c3e5496 into pingcap:master Dec 25, 2020
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/run-cherry-picker

ti-srebot pushed a commit to ti-srebot/tidb that referenced this pull request Sep 6, 2021
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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cherry pick to release-4.0 in PR #27832

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compatibility-breaker Violation of forwards/backwards compatibility in a design-time piece. component/expression sig/execution SIG execution status/can-merge Indicates a PR has been approved by a committer. status/LGT2 Indicates that a PR has LGTM 2. type/bugfix This PR fixes a bug.
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Successfully merging this pull request may close these issues.

Disabling STRICT_TRANS_TABLES should allow NULL insert into NOT NULL column with default value
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