executor: support single precision value in json agg

[YangKeao]

Signed-off-by: YangKeao [email protected]

What problem does this PR solve?

Issue Number: close #37287

Problem Summary:

The json_objectagg and json_arrayagg can receive float now 🍻 .

What is changed and how it works?

Convert the float value into double before writing into the map. I also moved the validation/conversion of data type from AppendFinalResult2Chunk to UpdatePartialResult, which will make it find the problem or convert the data ASAP.

Check List

Tests

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

CREATE TABLE t1 (a FLOAT, b DOUBLE, c DECIMAL(10, 2));
INSERT INTO t1 VALUES (1.0, 2.0, 3.0),(1.0, 3.0, 9.0),(1.0, 4.0, 16.0),(1.0, 5.0, 25.0);
SELECT JSON_VALID(JSON_ARRAYAGG(a)) FROM t1;

It gives

+------------------------------+
| JSON_VALID(JSON_ARRAYAGG(a)) |
+------------------------------+
|                            1 |
+------------------------------+

Release note

Fix the issue that the single precision float cannot be used in json aggregation funtions

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• xhebox
• xiongjiwei

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[sre-bot]

Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/820eaa65f5caa37aaa9d8aefe9b76aca83685683

[xiongjiwei]

please add the manual test into the test file

[xhebox]

/merge

[ti-chi-bot]

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

Commit hash: cfa5c01

[sre-bot]

TiDB MergeCI notify

🔴 Bad News! [2] CI still failing after this pr merged.
These failed integration tests don't seem to be introduced by the current PR.

CI Name	Result	Duration	Compare with Parent commit
idc-jenkins-ci-tidb/common-test	🔴 failed 2, success 9, total 11	13 min	Existing failure
idc-jenkins-ci-tidb/integration-common-test	🔴 failed 2, success 15, total 17	12 min	Existing failure
idc-jenkins-ci/integration-cdc-test	🟢 all 36 tests passed	36 min	Existing passed
idc-jenkins-ci-tidb/tics-test	🟢 all 1 tests passed	18 min	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2	🟢 all 28 tests passed	7 min 52 sec	Existing passed
idc-jenkins-ci-tidb/integration-ddl-test	🟢 all 6 tests passed	5 min 26 sec	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1	🟢 all 26 tests passed	5 min 14 sec	Existing passed
idc-jenkins-ci-tidb/mybatis-test	🟢 all 1 tests passed	3 min 53 sec	Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test	🟢 all 1 tests passed	3 min 37 sec	Existing passed
idc-jenkins-ci-tidb/plugin-test	🟢 build success, plugin test success	4min	Existing passed